./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/product-lines/elevator_spec3_product32.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 d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:49:03,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:49:03,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:49:03,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:49:03,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:49:03,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:49:03,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:49:03,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:49:03,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:49:03,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:49:03,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:49:03,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:49:03,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:49:03,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:49:03,564 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:49:03,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:49:03,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:49:03,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:49:03,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:49:03,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:49:03,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:49:03,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:49:03,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:49:03,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:49:03,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:49:03,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:49:03,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:49:03,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:49:03,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:49:03,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:49:03,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:49:03,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:49:03,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:49:03,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:49:03,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:49:03,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:49:03,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:49:03,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:49:03,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:49:03,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:49:03,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:49:03,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:49:03,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2024-11-22 01:49:03,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:49:03,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:49:03,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:49:03,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:49:03,811 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:49:03,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2024-11-22 01:49:05,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:49:05,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:49:05,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2024-11-22 01:49:05,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b8b306b/c6986b67d6704cffb5ecefec244785e3/FLAGb3577fea2 [2024-11-22 01:49:05,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b8b306b/c6986b67d6704cffb5ecefec244785e3 [2024-11-22 01:49:05,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:49:05,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:49:05,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:49:05,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:49:05,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:49:05,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:05" (1/1) ... [2024-11-22 01:49:05,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246c0d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:05, skipping insertion in model container [2024-11-22 01:49:05,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:49:05" (1/1) ... [2024-11-22 01:49:05,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:49:05,971 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_product32.cil.c[3233,3246] [2024-11-22 01:49:06,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:49:06,257 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:49:06,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-22 01:49:06,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [151] [2024-11-22 01:49:06,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [160] [2024-11-22 01:49:06,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [198] [2024-11-22 01:49:06,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [564] [2024-11-22 01:49:06,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [753] [2024-11-22 01:49:06,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [873] [2024-11-22 01:49:06,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1540] [2024-11-22 01:49:06,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1558] [2024-11-22 01:49:06,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1907] [2024-11-22 01:49:06,278 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_product32.cil.c[3233,3246] [2024-11-22 01:49:06,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:49:06,374 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:49:06,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06 WrapperNode [2024-11-22 01:49:06,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:49:06,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:49:06,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:49:06,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:49:06,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,444 INFO L138 Inliner]: procedures = 97, calls = 361, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 1009 [2024-11-22 01:49:06,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:49:06,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:49:06,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:49:06,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:49:06,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,490 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-22 01:49:06,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:49:06,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:49:06,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:49:06,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:49:06,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (1/1) ... [2024-11-22 01:49:06,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:49:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:49:06,581 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) [2024-11-22 01:49:06,591 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 [2024-11-22 01:49:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-22 01:49:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-22 01:49:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-22 01:49:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-22 01:49:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-22 01:49:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-22 01:49:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-22 01:49:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-22 01:49:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-22 01:49:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-22 01:49:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-22 01:49:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-22 01:49:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-22 01:49:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-22 01:49:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-22 01:49:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-22 01:49:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-22 01:49:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:49:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-22 01:49:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-22 01:49:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-22 01:49:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-22 01:49:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-22 01:49:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-22 01:49:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-22 01:49:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-22 01:49:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-22 01:49:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-22 01:49:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-22 01:49:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-22 01:49:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-22 01:49:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 01:49:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 01:49:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-22 01:49:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:49:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:49:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-22 01:49:06,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-22 01:49:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-22 01:49:06,635 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-22 01:49:06,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:49:06,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:49:07,839 INFO L? ?]: Removed 497 outVars from TransFormulas that were not future-live. [2024-11-22 01:49:07,839 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:49:07,863 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:49:07,863 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:49:07,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:07 BoogieIcfgContainer [2024-11-22 01:49:07,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:49:07,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:49:07,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:49:07,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:49:07,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:49:05" (1/3) ... [2024-11-22 01:49:07,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db8523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:07, skipping insertion in model container [2024-11-22 01:49:07,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:49:06" (2/3) ... [2024-11-22 01:49:07,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db8523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:49:07, skipping insertion in model container [2024-11-22 01:49:07,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:49:07" (3/3) ... [2024-11-22 01:49:07,873 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2024-11-22 01:49:07,890 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:49:07,890 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:49:07,959 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:49:07,964 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;@386d92b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:49:07,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:49:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 483 states have (on average 1.660455486542443) internal successors, (802), 503 states have internal predecessors, (802), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-22 01:49:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 01:49:07,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:07,982 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] [2024-11-22 01:49:07,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:07,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1654757365, now seen corresponding path program 1 times [2024-11-22 01:49:07,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:07,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315945343] [2024-11-22 01:49:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:08,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315945343] [2024-11-22 01:49:08,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315945343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:08,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:08,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:49:08,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252223948] [2024-11-22 01:49:08,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:08,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:49:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:49:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:08,621 INFO L87 Difference]: Start difference. First operand has 629 states, 483 states have (on average 1.660455486542443) internal successors, (802), 503 states have internal predecessors, (802), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:08,836 INFO L93 Difference]: Finished difference Result 1255 states and 2076 transitions. [2024-11-22 01:49:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:49:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 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 [2024-11-22 01:49:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:08,860 INFO L225 Difference]: With dead ends: 1255 [2024-11-22 01:49:08,860 INFO L226 Difference]: Without dead ends: 634 [2024-11-22 01:49:08,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:49:08,874 INFO L432 NwaCegarLoop]: 1017 mSDtfsCounter, 91 mSDsluCounter, 4999 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:08,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6016 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:49:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-22 01:49:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 632. [2024-11-22 01:49:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 486 states have (on average 1.6522633744855968) internal successors, (803), 506 states have internal predecessors, (803), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2024-11-22 01:49:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1034 transitions. [2024-11-22 01:49:08,963 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1034 transitions. Word has length 67 [2024-11-22 01:49:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:08,964 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 1034 transitions. [2024-11-22 01:49:08,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1034 transitions. [2024-11-22 01:49:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 01:49:08,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:08,972 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] [2024-11-22 01:49:08,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:49:08,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:08,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash 527958941, now seen corresponding path program 1 times [2024-11-22 01:49:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:08,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561441115] [2024-11-22 01:49:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:08,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:09,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561441115] [2024-11-22 01:49:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561441115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732703531] [2024-11-22 01:49:09,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:09,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:09,150 INFO L87 Difference]: Start difference. First operand 632 states and 1034 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:09,209 INFO L93 Difference]: Finished difference Result 1246 states and 2049 transitions. [2024-11-22 01:49:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:49:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 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 [2024-11-22 01:49:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:09,214 INFO L225 Difference]: With dead ends: 1246 [2024-11-22 01:49:09,215 INFO L226 Difference]: Without dead ends: 608 [2024-11-22 01:49:09,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:49:09,219 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 14 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:09,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3007 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-22 01:49:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2024-11-22 01:49:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 465 states have (on average 1.643010752688172) internal successors, (764), 483 states have internal predecessors, (764), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 991 transitions. [2024-11-22 01:49:09,245 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 991 transitions. Word has length 68 [2024-11-22 01:49:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:09,246 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 991 transitions. [2024-11-22 01:49:09,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 991 transitions. [2024-11-22 01:49:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 01:49:09,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:09,250 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] [2024-11-22 01:49:09,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:49:09,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:09,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1072531637, now seen corresponding path program 1 times [2024-11-22 01:49:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873639445] [2024-11-22 01:49:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:09,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873639445] [2024-11-22 01:49:09,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873639445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:09,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:49:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927651145] [2024-11-22 01:49:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:09,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:49:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:49:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:09,488 INFO L87 Difference]: Start difference. First operand 608 states and 991 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:09,593 INFO L93 Difference]: Finished difference Result 1209 states and 1981 transitions. [2024-11-22 01:49:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:49:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 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 68 [2024-11-22 01:49:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:09,599 INFO L225 Difference]: With dead ends: 1209 [2024-11-22 01:49:09,599 INFO L226 Difference]: Without dead ends: 602 [2024-11-22 01:49:09,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:49:09,604 INFO L432 NwaCegarLoop]: 980 mSDtfsCounter, 77 mSDsluCounter, 4830 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5810 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:09,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5810 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-22 01:49:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2024-11-22 01:49:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 459 states have (on average 1.636165577342048) internal successors, (751), 477 states have internal predecessors, (751), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 978 transitions. [2024-11-22 01:49:09,630 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 978 transitions. Word has length 68 [2024-11-22 01:49:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:09,631 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 978 transitions. [2024-11-22 01:49:09,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 978 transitions. [2024-11-22 01:49:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 01:49:09,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:09,633 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] [2024-11-22 01:49:09,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:49:09,633 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:09,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1167696849, now seen corresponding path program 1 times [2024-11-22 01:49:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:09,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732416299] [2024-11-22 01:49:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732416299] [2024-11-22 01:49:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732416299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:09,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:49:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678619129] [2024-11-22 01:49:09,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:49:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:49:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:09,808 INFO L87 Difference]: Start difference. First operand 602 states and 978 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:09,868 INFO L93 Difference]: Finished difference Result 1197 states and 1955 transitions. [2024-11-22 01:49:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:49:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 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 [2024-11-22 01:49:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:09,872 INFO L225 Difference]: With dead ends: 1197 [2024-11-22 01:49:09,872 INFO L226 Difference]: Without dead ends: 596 [2024-11-22 01:49:09,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:49:09,876 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 63 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5750 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:09,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5750 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-22 01:49:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2024-11-22 01:49:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 453 states have (on average 1.6291390728476822) internal successors, (738), 471 states have internal predecessors, (738), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 965 transitions. [2024-11-22 01:49:09,894 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 965 transitions. Word has length 69 [2024-11-22 01:49:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:09,894 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 965 transitions. [2024-11-22 01:49:09,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 965 transitions. [2024-11-22 01:49:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-22 01:49:09,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:09,895 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] [2024-11-22 01:49:09,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:49:09,895 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:09,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 107745072, now seen corresponding path program 1 times [2024-11-22 01:49:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:09,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802265009] [2024-11-22 01:49:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802265009] [2024-11-22 01:49:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802265009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:10,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:49:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304735480] [2024-11-22 01:49:10,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:10,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:49:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:49:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:10,062 INFO L87 Difference]: Start difference. First operand 596 states and 965 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:10,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:10,119 INFO L93 Difference]: Finished difference Result 1185 states and 1929 transitions. [2024-11-22 01:49:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:49:10,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 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 70 [2024-11-22 01:49:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:10,125 INFO L225 Difference]: With dead ends: 1185 [2024-11-22 01:49:10,126 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 01:49:10,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:49:10,130 INFO L432 NwaCegarLoop]: 956 mSDtfsCounter, 49 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:10,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5690 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 01:49:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-22 01:49:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6196868008948546) internal successors, (724), 465 states have internal predecessors, (724), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 951 transitions. [2024-11-22 01:49:10,154 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 951 transitions. Word has length 70 [2024-11-22 01:49:10,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:10,154 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 951 transitions. [2024-11-22 01:49:10,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 01:49:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 951 transitions. [2024-11-22 01:49:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 01:49:10,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:10,156 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] [2024-11-22 01:49:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 01:49:10,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1455743059, now seen corresponding path program 1 times [2024-11-22 01:49:10,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:10,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863129880] [2024-11-22 01:49:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863129880] [2024-11-22 01:49:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863129880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310391734] [2024-11-22 01:49:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:10,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,257 INFO L87 Difference]: Start difference. First operand 590 states and 951 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:10,305 INFO L93 Difference]: Finished difference Result 1164 states and 1888 transitions. [2024-11-22 01:49:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:49:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 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 71 [2024-11-22 01:49:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:10,313 INFO L225 Difference]: With dead ends: 1164 [2024-11-22 01:49:10,314 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 01:49:10,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,319 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 15 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:10,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2793 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 01:49:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-22 01:49:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6174496644295302) internal successors, (723), 465 states have internal predecessors, (723), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 950 transitions. [2024-11-22 01:49:10,342 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 950 transitions. Word has length 71 [2024-11-22 01:49:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:10,343 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 950 transitions. [2024-11-22 01:49:10,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 950 transitions. [2024-11-22 01:49:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 01:49:10,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:10,344 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] [2024-11-22 01:49:10,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 01:49:10,345 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:10,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 976352591, now seen corresponding path program 1 times [2024-11-22 01:49:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:10,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221308786] [2024-11-22 01:49:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:10,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:10,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221308786] [2024-11-22 01:49:10,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221308786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:10,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:10,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:10,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621797937] [2024-11-22 01:49:10,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:10,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:10,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,448 INFO L87 Difference]: Start difference. First operand 590 states and 950 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:10,488 INFO L93 Difference]: Finished difference Result 1164 states and 1886 transitions. [2024-11-22 01:49:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:49:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 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 72 [2024-11-22 01:49:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:10,496 INFO L225 Difference]: With dead ends: 1164 [2024-11-22 01:49:10,496 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 01:49:10,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,501 INFO L432 NwaCegarLoop]: 937 mSDtfsCounter, 14 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:10,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2795 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 01:49:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-22 01:49:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6152125279642058) internal successors, (722), 465 states have internal predecessors, (722), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 949 transitions. [2024-11-22 01:49:10,520 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 949 transitions. Word has length 72 [2024-11-22 01:49:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:10,520 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 949 transitions. [2024-11-22 01:49:10,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 949 transitions. [2024-11-22 01:49:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 01:49:10,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:10,522 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] [2024-11-22 01:49:10,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 01:49:10,522 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:10,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1318300648, now seen corresponding path program 1 times [2024-11-22 01:49:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581768851] [2024-11-22 01:49:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581768851] [2024-11-22 01:49:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581768851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041866645] [2024-11-22 01:49:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:10,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,644 INFO L87 Difference]: Start difference. First operand 590 states and 949 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:10,682 INFO L93 Difference]: Finished difference Result 1164 states and 1884 transitions. [2024-11-22 01:49:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:49:10,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 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 [2024-11-22 01:49:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:10,688 INFO L225 Difference]: With dead ends: 1164 [2024-11-22 01:49:10,689 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 01:49:10,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,694 INFO L432 NwaCegarLoop]: 938 mSDtfsCounter, 13 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:10,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2797 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 01:49:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-22 01:49:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6129753914988814) internal successors, (721), 465 states have internal predecessors, (721), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 948 transitions. [2024-11-22 01:49:10,712 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 948 transitions. Word has length 73 [2024-11-22 01:49:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:10,712 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 948 transitions. [2024-11-22 01:49:10,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 948 transitions. [2024-11-22 01:49:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 01:49:10,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:10,714 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] [2024-11-22 01:49:10,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 01:49:10,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:10,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash 243442356, now seen corresponding path program 1 times [2024-11-22 01:49:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255525185] [2024-11-22 01:49:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:10,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:10,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255525185] [2024-11-22 01:49:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255525185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744272532] [2024-11-22 01:49:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:10,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:10,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,810 INFO L87 Difference]: Start difference. First operand 590 states and 948 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:10,846 INFO L93 Difference]: Finished difference Result 1164 states and 1882 transitions. [2024-11-22 01:49:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:49:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 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 74 [2024-11-22 01:49:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:10,850 INFO L225 Difference]: With dead ends: 1164 [2024-11-22 01:49:10,850 INFO L226 Difference]: Without dead ends: 590 [2024-11-22 01:49:10,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:10,853 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 12 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:10,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2799 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-22 01:49:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-22 01:49:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.610738255033557) internal successors, (720), 465 states have internal predecessors, (720), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-22 01:49:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 947 transitions. [2024-11-22 01:49:10,869 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 947 transitions. Word has length 74 [2024-11-22 01:49:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:10,869 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 947 transitions. [2024-11-22 01:49:10,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 01:49:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 947 transitions. [2024-11-22 01:49:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-22 01:49:10,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:10,870 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] [2024-11-22 01:49:10,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 01:49:10,870 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:10,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1094384605, now seen corresponding path program 1 times [2024-11-22 01:49:10,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:10,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927328846] [2024-11-22 01:49:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:10,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:49:11,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:11,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927328846] [2024-11-22 01:49:11,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927328846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:49:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651118040] [2024-11-22 01:49:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:11,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:11,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:49:11,014 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) [2024-11-22 01:49:11,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:49:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:11,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:49:11,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:49:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:49:11,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:49:11,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651118040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:11,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:49:11,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:49:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976695553] [2024-11-22 01:49:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:11,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:49:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:49:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:11,354 INFO L87 Difference]: Start difference. First operand 590 states and 947 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) [2024-11-22 01:49:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:11,411 INFO L93 Difference]: Finished difference Result 1681 states and 2729 transitions. [2024-11-22 01:49:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:49:11,412 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 [2024-11-22 01:49:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:11,419 INFO L225 Difference]: With dead ends: 1681 [2024-11-22 01:49:11,420 INFO L226 Difference]: Without dead ends: 1109 [2024-11-22 01:49:11,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:11,424 INFO L432 NwaCegarLoop]: 1611 mSDtfsCounter, 909 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 2452 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 [2024-11-22 01:49:11,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 2452 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-11-22 01:49:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1094. [2024-11-22 01:49:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 836 states have (on average 1.6220095693779903) internal successors, (1356), 871 states have internal predecessors, (1356), 205 states have call successors, (205), 53 states have call predecessors, (205), 52 states have return successors, (207), 197 states have call predecessors, (207), 202 states have call successors, (207) [2024-11-22 01:49:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1768 transitions. [2024-11-22 01:49:11,462 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1768 transitions. Word has length 75 [2024-11-22 01:49:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:11,463 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1768 transitions. [2024-11-22 01:49:11,463 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) [2024-11-22 01:49:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1768 transitions. [2024-11-22 01:49:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 01:49:11,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:11,464 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] [2024-11-22 01:49:11,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 01:49:11,665 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,SelfDestructingSolverStorable9 [2024-11-22 01:49:11,665 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:11,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash -658687071, now seen corresponding path program 1 times [2024-11-22 01:49:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379576057] [2024-11-22 01:49:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:49:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379576057] [2024-11-22 01:49:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379576057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:49:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769591461] [2024-11-22 01:49:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:11,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:49:11,903 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) [2024-11-22 01:49:11,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:49:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:12,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:49:12,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:49:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:49:12,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:49:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769591461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:49:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:49:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488112869] [2024-11-22 01:49:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:12,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:49:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:49:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:12,231 INFO L87 Difference]: Start difference. First operand 1094 states and 1768 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) [2024-11-22 01:49:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:12,297 INFO L93 Difference]: Finished difference Result 2689 states and 4373 transitions. [2024-11-22 01:49:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:49:12,298 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 76 [2024-11-22 01:49:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:12,308 INFO L225 Difference]: With dead ends: 2689 [2024-11-22 01:49:12,309 INFO L226 Difference]: Without dead ends: 1613 [2024-11-22 01:49:12,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:49:12,315 INFO L432 NwaCegarLoop]: 1008 mSDtfsCounter, 909 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:12,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1848 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2024-11-22 01:49:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1565. [2024-11-22 01:49:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1198 states have (on average 1.6327212020033388) internal successors, (1956), 1250 states have internal predecessors, (1956), 292 states have call successors, (292), 74 states have call predecessors, (292), 74 states have return successors, (299), 282 states have call predecessors, (299), 289 states have call successors, (299) [2024-11-22 01:49:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2547 transitions. [2024-11-22 01:49:12,371 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2547 transitions. Word has length 76 [2024-11-22 01:49:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:12,372 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2547 transitions. [2024-11-22 01:49:12,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-22 01:49:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2024-11-22 01:49:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-22 01:49:12,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:12,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:12,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 01:49:12,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 01:49:12,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:12,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -262914392, now seen corresponding path program 1 times [2024-11-22 01:49:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751932809] [2024-11-22 01:49:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:12,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751932809] [2024-11-22 01:49:12,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751932809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:12,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:49:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658114403] [2024-11-22 01:49:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:12,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:49:12,730 INFO L87 Difference]: Start difference. First operand 1565 states and 2547 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 01:49:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:13,290 INFO L93 Difference]: Finished difference Result 4619 states and 7690 transitions. [2024-11-22 01:49:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:13,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-11-22 01:49:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:13,317 INFO L225 Difference]: With dead ends: 4619 [2024-11-22 01:49:13,317 INFO L226 Difference]: Without dead ends: 3072 [2024-11-22 01:49:13,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:49:13,329 INFO L432 NwaCegarLoop]: 1083 mSDtfsCounter, 942 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:13,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 4959 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:49:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2024-11-22 01:49:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3025. [2024-11-22 01:49:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 2317 states have (on average 1.6322831247302547) internal successors, (3782), 2417 states have internal predecessors, (3782), 563 states have call successors, (563), 142 states have call predecessors, (563), 144 states have return successors, (679), 549 states have call predecessors, (679), 559 states have call successors, (679) [2024-11-22 01:49:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 5024 transitions. [2024-11-22 01:49:13,458 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 5024 transitions. Word has length 78 [2024-11-22 01:49:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:13,458 INFO L471 AbstractCegarLoop]: Abstraction has 3025 states and 5024 transitions. [2024-11-22 01:49:13,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 01:49:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 5024 transitions. [2024-11-22 01:49:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 01:49:13,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:13,460 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:13,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 01:49:13,461 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:13,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1051726538, now seen corresponding path program 1 times [2024-11-22 01:49:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087446771] [2024-11-22 01:49:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:49:13,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087446771] [2024-11-22 01:49:13,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087446771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:49:13,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821356988] [2024-11-22 01:49:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:13,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:49:13,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:49:13,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:49:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:13,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:49:13,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:49:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:49:13,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:49:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821356988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:13,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:49:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-22 01:49:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819319656] [2024-11-22 01:49:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:13,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:49:13,986 INFO L87 Difference]: Start difference. First operand 3025 states and 5024 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 01:49:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:14,820 INFO L93 Difference]: Finished difference Result 8210 states and 13900 transitions. [2024-11-22 01:49:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2024-11-22 01:49:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:14,856 INFO L225 Difference]: With dead ends: 8210 [2024-11-22 01:49:14,856 INFO L226 Difference]: Without dead ends: 5203 [2024-11-22 01:49:14,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:49:14,875 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 807 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:14,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 4281 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 01:49:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2024-11-22 01:49:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5160. [2024-11-22 01:49:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 3946 states have (on average 1.5864166244298024) internal successors, (6260), 4112 states have internal predecessors, (6260), 950 states have call successors, (950), 256 states have call predecessors, (950), 263 states have return successors, (1283), 931 states have call predecessors, (1283), 944 states have call successors, (1283) [2024-11-22 01:49:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 8493 transitions. [2024-11-22 01:49:15,083 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 8493 transitions. Word has length 79 [2024-11-22 01:49:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:15,083 INFO L471 AbstractCegarLoop]: Abstraction has 5160 states and 8493 transitions. [2024-11-22 01:49:15,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 01:49:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 8493 transitions. [2024-11-22 01:49:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 01:49:15,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:15,084 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:15,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 01:49:15,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:15,285 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:15,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:15,286 INFO L85 PathProgramCache]: Analyzing trace with hash -167441143, now seen corresponding path program 1 times [2024-11-22 01:49:15,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:15,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980145717] [2024-11-22 01:49:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:15,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:49:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:15,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980145717] [2024-11-22 01:49:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980145717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733113568] [2024-11-22 01:49:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:15,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:15,385 INFO L87 Difference]: Start difference. First operand 5160 states and 8493 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-22 01:49:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:15,689 INFO L93 Difference]: Finished difference Result 10326 states and 17161 transitions. [2024-11-22 01:49:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:49:15,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2024-11-22 01:49:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:15,739 INFO L225 Difference]: With dead ends: 10326 [2024-11-22 01:49:15,739 INFO L226 Difference]: Without dead ends: 5184 [2024-11-22 01:49:15,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:49:15,776 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 12 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:15,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2763 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:49:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2024-11-22 01:49:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 5168. [2024-11-22 01:49:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 3952 states have (on average 1.5850202429149798) internal successors, (6264), 4118 states have internal predecessors, (6264), 950 states have call successors, (950), 260 states have call predecessors, (950), 265 states have return successors, (1272), 929 states have call predecessors, (1272), 944 states have call successors, (1272) [2024-11-22 01:49:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 8486 transitions. [2024-11-22 01:49:15,993 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 8486 transitions. Word has length 79 [2024-11-22 01:49:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:15,993 INFO L471 AbstractCegarLoop]: Abstraction has 5168 states and 8486 transitions. [2024-11-22 01:49:15,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-22 01:49:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 8486 transitions. [2024-11-22 01:49:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 01:49:15,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:15,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:15,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 01:49:15,999 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:16,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1480753845, now seen corresponding path program 1 times [2024-11-22 01:49:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739534955] [2024-11-22 01:49:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:49:16,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739534955] [2024-11-22 01:49:16,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739534955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:16,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:16,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:49:16,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819042229] [2024-11-22 01:49:16,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:16,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:16,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:49:16,156 INFO L87 Difference]: Start difference. First operand 5168 states and 8486 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 01:49:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:16,920 INFO L93 Difference]: Finished difference Result 15437 states and 26369 transitions. [2024-11-22 01:49:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:16,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-11-22 01:49:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:17,002 INFO L225 Difference]: With dead ends: 15437 [2024-11-22 01:49:17,002 INFO L226 Difference]: Without dead ends: 10287 [2024-11-22 01:49:17,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:49:17,027 INFO L432 NwaCegarLoop]: 1016 mSDtfsCounter, 939 mSDsluCounter, 3687 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:17,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 4703 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:49:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2024-11-22 01:49:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 10218. [2024-11-22 01:49:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 7816 states have (on average 1.5809877175025588) internal successors, (12357), 8142 states have internal predecessors, (12357), 1872 states have call successors, (1872), 514 states have call predecessors, (1872), 529 states have return successors, (3066), 1841 states have call predecessors, (3066), 1862 states have call successors, (3066) [2024-11-22 01:49:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 17295 transitions. [2024-11-22 01:49:17,530 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 17295 transitions. Word has length 87 [2024-11-22 01:49:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:17,531 INFO L471 AbstractCegarLoop]: Abstraction has 10218 states and 17295 transitions. [2024-11-22 01:49:17,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 01:49:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 17295 transitions. [2024-11-22 01:49:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-22 01:49:17,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:17,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:17,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 01:49:17,533 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:17,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -78459634, now seen corresponding path program 1 times [2024-11-22 01:49:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719722648] [2024-11-22 01:49:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 01:49:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719722648] [2024-11-22 01:49:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719722648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:17,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578238209] [2024-11-22 01:49:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:17,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:17,609 INFO L87 Difference]: Start difference. First operand 10218 states and 17295 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 01:49:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:18,106 INFO L93 Difference]: Finished difference Result 20490 states and 35163 transitions. [2024-11-22 01:49:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:49:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-22 01:49:18,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:18,196 INFO L225 Difference]: With dead ends: 20490 [2024-11-22 01:49:18,197 INFO L226 Difference]: Without dead ends: 10290 [2024-11-22 01:49:18,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:49:18,261 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 12 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:18,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2754 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2024-11-22 01:49:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 10258. [2024-11-22 01:49:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10258 states, 7852 states have (on average 1.5788334182373918) internal successors, (12397), 8170 states have internal predecessors, (12397), 1872 states have call successors, (1872), 530 states have call predecessors, (1872), 533 states have return successors, (3050), 1837 states have call predecessors, (3050), 1862 states have call successors, (3050) [2024-11-22 01:49:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10258 states to 10258 states and 17319 transitions. [2024-11-22 01:49:18,785 INFO L78 Accepts]: Start accepts. Automaton has 10258 states and 17319 transitions. Word has length 88 [2024-11-22 01:49:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:18,785 INFO L471 AbstractCegarLoop]: Abstraction has 10258 states and 17319 transitions. [2024-11-22 01:49:18,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 01:49:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 10258 states and 17319 transitions. [2024-11-22 01:49:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 01:49:18,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:18,788 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:18,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 01:49:18,788 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:18,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1305801625, now seen corresponding path program 1 times [2024-11-22 01:49:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453839565] [2024-11-22 01:49:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:49:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453839565] [2024-11-22 01:49:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453839565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:49:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330122976] [2024-11-22 01:49:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:18,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:49:18,983 INFO L87 Difference]: Start difference. First operand 10258 states and 17319 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 01:49:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:20,038 INFO L93 Difference]: Finished difference Result 30785 states and 55050 transitions. [2024-11-22 01:49:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-11-22 01:49:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:20,188 INFO L225 Difference]: With dead ends: 30785 [2024-11-22 01:49:20,188 INFO L226 Difference]: Without dead ends: 20545 [2024-11-22 01:49:20,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:49:20,244 INFO L432 NwaCegarLoop]: 1017 mSDtfsCounter, 935 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:20,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 4717 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:49:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20545 states. [2024-11-22 01:49:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20545 to 20444. [2024-11-22 01:49:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20444 states, 15652 states have (on average 1.5754536161512906) internal successors, (24659), 16282 states have internal predecessors, (24659), 3722 states have call successors, (3722), 1054 states have call predecessors, (3722), 1069 states have return successors, (7782), 3667 states have call predecessors, (7782), 3704 states have call successors, (7782) [2024-11-22 01:49:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20444 states to 20444 states and 36163 transitions. [2024-11-22 01:49:21,201 INFO L78 Accepts]: Start accepts. Automaton has 20444 states and 36163 transitions. Word has length 97 [2024-11-22 01:49:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:21,202 INFO L471 AbstractCegarLoop]: Abstraction has 20444 states and 36163 transitions. [2024-11-22 01:49:21,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 01:49:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 20444 states and 36163 transitions. [2024-11-22 01:49:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-22 01:49:21,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:21,203 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:21,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 01:49:21,204 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:21,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 237390778, now seen corresponding path program 1 times [2024-11-22 01:49:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566063478] [2024-11-22 01:49:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 01:49:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566063478] [2024-11-22 01:49:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566063478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:21,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784975995] [2024-11-22 01:49:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:21,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:21,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:21,270 INFO L87 Difference]: Start difference. First operand 20444 states and 36163 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-22 01:49:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:22,505 INFO L93 Difference]: Finished difference Result 41014 states and 74161 transitions. [2024-11-22 01:49:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:49:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-11-22 01:49:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:22,769 INFO L225 Difference]: With dead ends: 41014 [2024-11-22 01:49:22,769 INFO L226 Difference]: Without dead ends: 20588 [2024-11-22 01:49:22,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:49:22,871 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 11 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:22,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2754 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:49:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20588 states. [2024-11-22 01:49:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20588 to 20524. [2024-11-22 01:49:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20524 states, 15724 states have (on average 1.573327397608751) internal successors, (24739), 16354 states have internal predecessors, (24739), 3722 states have call successors, (3722), 1070 states have call predecessors, (3722), 1077 states have return successors, (7762), 3659 states have call predecessors, (7762), 3704 states have call successors, (7762) [2024-11-22 01:49:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20524 states to 20524 states and 36223 transitions. [2024-11-22 01:49:23,948 INFO L78 Accepts]: Start accepts. Automaton has 20524 states and 36223 transitions. Word has length 98 [2024-11-22 01:49:23,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:23,948 INFO L471 AbstractCegarLoop]: Abstraction has 20524 states and 36223 transitions. [2024-11-22 01:49:23,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-22 01:49:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 20524 states and 36223 transitions. [2024-11-22 01:49:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-22 01:49:23,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:23,950 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:23,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 01:49:23,951 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:23,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1415345324, now seen corresponding path program 1 times [2024-11-22 01:49:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289816920] [2024-11-22 01:49:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 01:49:24,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289816920] [2024-11-22 01:49:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289816920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:49:24,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77121369] [2024-11-22 01:49:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:24,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:49:24,256 INFO L87 Difference]: Start difference. First operand 20524 states and 36223 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 01:49:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:26,405 INFO L93 Difference]: Finished difference Result 61709 states and 119123 transitions. [2024-11-22 01:49:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:49:26,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-22 01:49:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:26,788 INFO L225 Difference]: With dead ends: 61709 [2024-11-22 01:49:26,788 INFO L226 Difference]: Without dead ends: 41203 [2024-11-22 01:49:26,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:49:26,923 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 930 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:26,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 4877 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 01:49:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41203 states. [2024-11-22 01:49:28,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41203 to 41038. [2024-11-22 01:49:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41038 states, 31444 states have (on average 1.570951532883857) internal successors, (49397), 32698 states have internal predecessors, (49397), 7428 states have call successors, (7428), 2134 states have call predecessors, (7428), 2165 states have return successors, (21230), 7325 states have call predecessors, (21230), 7394 states have call successors, (21230) [2024-11-22 01:49:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41038 states to 41038 states and 78055 transitions. [2024-11-22 01:49:29,153 INFO L78 Accepts]: Start accepts. Automaton has 41038 states and 78055 transitions. Word has length 108 [2024-11-22 01:49:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:29,153 INFO L471 AbstractCegarLoop]: Abstraction has 41038 states and 78055 transitions. [2024-11-22 01:49:29,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 01:49:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 41038 states and 78055 transitions. [2024-11-22 01:49:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 01:49:29,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:29,155 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:29,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 01:49:29,155 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:29,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2119100835, now seen corresponding path program 1 times [2024-11-22 01:49:29,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423530918] [2024-11-22 01:49:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 01:49:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423530918] [2024-11-22 01:49:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423530918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:29,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:29,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:49:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662786738] [2024-11-22 01:49:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:29,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:49:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:29,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:49:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:49:29,234 INFO L87 Difference]: Start difference. First operand 41038 states and 78055 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-22 01:49:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:31,770 INFO L93 Difference]: Finished difference Result 82378 states and 162415 transitions. [2024-11-22 01:49:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:49:31,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-22 01:49:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:32,179 INFO L225 Difference]: With dead ends: 82378 [2024-11-22 01:49:32,179 INFO L226 Difference]: Without dead ends: 41358 [2024-11-22 01:49:32,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:49:32,723 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 10 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:32,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2754 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:49:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41358 states. [2024-11-22 01:49:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41358 to 41230. [2024-11-22 01:49:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 31620 states have (on average 1.5682795698924732) internal successors, (49589), 32874 states have internal predecessors, (49589), 7428 states have call successors, (7428), 2166 states have call predecessors, (7428), 2181 states have return successors, (21214), 7309 states have call predecessors, (21214), 7394 states have call successors, (21214) [2024-11-22 01:49:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 78231 transitions. [2024-11-22 01:49:34,977 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 78231 transitions. Word has length 109 [2024-11-22 01:49:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:34,977 INFO L471 AbstractCegarLoop]: Abstraction has 41230 states and 78231 transitions. [2024-11-22 01:49:34,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-22 01:49:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 78231 transitions. [2024-11-22 01:49:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 01:49:34,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:34,980 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:34,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 01:49:34,980 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:34,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash -814925855, now seen corresponding path program 1 times [2024-11-22 01:49:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:34,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914941889] [2024-11-22 01:49:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:34,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-22 01:49:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914941889] [2024-11-22 01:49:35,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914941889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:49:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137762139] [2024-11-22 01:49:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:49:35,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:49:35,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:49:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:35,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 01:49:35,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:49:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-22 01:49:35,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:49:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137762139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:35,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:49:35,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-22 01:49:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771843588] [2024-11-22 01:49:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:35,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:49:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:49:35,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:49:35,595 INFO L87 Difference]: Start difference. First operand 41230 states and 78231 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:49:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:49:43,915 INFO L93 Difference]: Finished difference Result 147101 states and 303291 transitions. [2024-11-22 01:49:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 01:49:43,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 148 [2024-11-22 01:49:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:49:45,490 INFO L225 Difference]: With dead ends: 147101 [2024-11-22 01:49:45,490 INFO L226 Difference]: Without dead ends: 105889 [2024-11-22 01:49:46,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-22 01:49:46,031 INFO L432 NwaCegarLoop]: 646 mSDtfsCounter, 2728 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 7109 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 7109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:49:46,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2920 Valid, 2574 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 7109 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-22 01:49:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105889 states. [2024-11-22 01:49:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105889 to 104568. [2024-11-22 01:49:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104568 states, 80330 states have (on average 1.5621187601145277) internal successors, (125485), 83368 states have internal predecessors, (125485), 18568 states have call successors, (18568), 5382 states have call predecessors, (18568), 5669 states have return successors, (65620), 18553 states have call predecessors, (65620), 18502 states have call successors, (65620) [2024-11-22 01:49:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104568 states to 104568 states and 209673 transitions. [2024-11-22 01:49:52,683 INFO L78 Accepts]: Start accepts. Automaton has 104568 states and 209673 transitions. Word has length 148 [2024-11-22 01:49:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:49:52,683 INFO L471 AbstractCegarLoop]: Abstraction has 104568 states and 209673 transitions. [2024-11-22 01:49:52,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-22 01:49:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 104568 states and 209673 transitions. [2024-11-22 01:49:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 01:49:52,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:49:52,684 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:49:52,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 01:49:52,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:49:52,885 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:49:52,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:49:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -370666856, now seen corresponding path program 1 times [2024-11-22 01:49:52,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:49:52,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508375944] [2024-11-22 01:49:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:49:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:49:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:49:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-22 01:49:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:49:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508375944] [2024-11-22 01:49:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508375944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:49:53,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:49:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:49:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077299868] [2024-11-22 01:49:53,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:49:53,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:49:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:49:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:49:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:49:53,053 INFO L87 Difference]: Start difference. First operand 104568 states and 209673 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-22 01:50:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:50:00,678 INFO L93 Difference]: Finished difference Result 212766 states and 430639 transitions. [2024-11-22 01:50:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:50:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2024-11-22 01:50:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:50:02,174 INFO L225 Difference]: With dead ends: 212766 [2024-11-22 01:50:02,174 INFO L226 Difference]: Without dead ends: 108168 [2024-11-22 01:50:03,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:50:03,198 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 779 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:50:03,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 4505 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:50:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108168 states.