./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:03:28,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:03:28,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:03:28,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:03:28,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:03:28,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:03:28,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:03:28,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:03:28,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:03:28,616 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:03:28,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:03:28,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:03:28,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:03:28,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:03:28,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:03:28,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:03:28,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:03:28,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:03:28,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:03:28,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:03:28,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:03:28,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:03:28,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:03:28,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:03:28,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:03:28,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:03:28,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:03:28,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:03:28,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:03:28,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:03:28,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:03:28,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:03:28,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:03:28,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:03:28,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:03:28,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:03:28,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:03:28,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:03:28,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:03:28,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:03:28,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:03:28,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:03:28,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 [2024-11-18 14:03:28,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:03:28,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:03:28,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:03:28,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:03:28,946 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:03:28,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-11-18 14:03:30,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:03:30,508 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:03:30,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2024-11-18 14:03:30,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e8c7ac0/816dfa16245545ed85fa5916613ba813/FLAG83e96597c [2024-11-18 14:03:30,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18e8c7ac0/816dfa16245545ed85fa5916613ba813 [2024-11-18 14:03:30,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:03:30,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:03:30,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:30,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:03:30,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:03:30,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:30" (1/1) ... [2024-11-18 14:03:30,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c47186d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:30, skipping insertion in model container [2024-11-18 14:03:30,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:30" (1/1) ... [2024-11-18 14:03:30,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:03:31,075 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_product29.cil.c[40506,40519] [2024-11-18 14:03:31,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:31,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:03:31,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-18 14:03:31,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-11-18 14:03:31,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [754] [2024-11-18 14:03:31,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1120] [2024-11-18 14:03:31,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1220] [2024-11-18 14:03:31,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1340] [2024-11-18 14:03:31,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1358] [2024-11-18 14:03:31,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1548] [2024-11-18 14:03:31,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1897] [2024-11-18 14:03:31,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1906] [2024-11-18 14:03:31,276 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_product29.cil.c[40506,40519] [2024-11-18 14:03:31,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:31,330 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:03:31,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31 WrapperNode [2024-11-18 14:03:31,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:31,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:31,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:03:31,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:03:31,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,399 INFO L138 Inliner]: procedures = 91, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 927 [2024-11-18 14:03:31,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:31,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:03:31,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:03:31,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:03:31,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,441 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:03:31,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:03:31,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:03:31,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:03:31,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:03:31,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (1/1) ... [2024-11-18 14:03:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:03:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:31,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:03:31,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:03:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:03:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 14:03:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 14:03:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:03:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:03:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:03:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:03:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:03:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:03:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 14:03:31,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 14:03:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:03:31,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:03:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 14:03:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 14:03:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:03:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:03:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:03:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:03:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:03:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:03:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:03:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:03:31,601 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:03:31,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:03:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:03:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:03:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:03:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:03:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-18 14:03:31,602 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-18 14:03:31,602 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:03:31,603 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:03:31,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:03:31,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:03:31,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:03:31,606 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:03:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:03:31,776 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:03:31,778 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:03:32,975 INFO L? ?]: Removed 470 outVars from TransFormulas that were not future-live. [2024-11-18 14:03:32,976 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:03:33,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:03:33,001 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:03:33,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:33 BoogieIcfgContainer [2024-11-18 14:03:33,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:03:33,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:03:33,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:03:33,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:03:33,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:03:30" (1/3) ... [2024-11-18 14:03:33,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:33, skipping insertion in model container [2024-11-18 14:03:33,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:31" (2/3) ... [2024-11-18 14:03:33,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416f319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:33, skipping insertion in model container [2024-11-18 14:03:33,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:33" (3/3) ... [2024-11-18 14:03:33,007 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2024-11-18 14:03:33,020 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:03:33,020 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:03:33,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:03:33,096 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;@64ca3f2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:03:33,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:03:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-18 14:03:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:03:33,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:33,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:33,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:33,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2006006506, now seen corresponding path program 1 times [2024-11-18 14:03:33,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507249381] [2024-11-18 14:03:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507249381] [2024-11-18 14:03:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507249381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906861141] [2024-11-18 14:03:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:33,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:33,737 INFO L87 Difference]: Start difference. First operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:33,902 INFO L93 Difference]: Finished difference Result 1191 states and 1990 transitions. [2024-11-18 14:03:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:33,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2024-11-18 14:03:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:33,921 INFO L225 Difference]: With dead ends: 1191 [2024-11-18 14:03:33,922 INFO L226 Difference]: Without dead ends: 602 [2024-11-18 14:03:33,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:33,934 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 91 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:33,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5741 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-18 14:03:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2024-11-18 14:03:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.6695278969957081) internal successors, (778), 484 states have internal predecessors, (778), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-18 14:03:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 991 transitions. [2024-11-18 14:03:34,006 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 991 transitions. Word has length 99 [2024-11-18 14:03:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:34,007 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 991 transitions. [2024-11-18 14:03:34,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 991 transitions. [2024-11-18 14:03:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 14:03:34,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:34,013 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:34,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:03:34,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:34,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2109230418, now seen corresponding path program 1 times [2024-11-18 14:03:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:34,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443656352] [2024-11-18 14:03:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:34,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:34,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443656352] [2024-11-18 14:03:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443656352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:34,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693702398] [2024-11-18 14:03:34,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:34,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:34,235 INFO L87 Difference]: Start difference. First operand 600 states and 991 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:34,342 INFO L93 Difference]: Finished difference Result 1195 states and 1985 transitions. [2024-11-18 14:03:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2024-11-18 14:03:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:34,348 INFO L225 Difference]: With dead ends: 1195 [2024-11-18 14:03:34,349 INFO L226 Difference]: Without dead ends: 611 [2024-11-18 14:03:34,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:34,353 INFO L432 NwaCegarLoop]: 973 mSDtfsCounter, 90 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:34,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5742 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-18 14:03:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 600. [2024-11-18 14:03:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.6695278969957081) internal successors, (778), 484 states have internal predecessors, (778), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-18 14:03:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 991 transitions. [2024-11-18 14:03:34,402 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 991 transitions. Word has length 100 [2024-11-18 14:03:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:34,403 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 991 transitions. [2024-11-18 14:03:34,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 991 transitions. [2024-11-18 14:03:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 14:03:34,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:34,408 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:34,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:03:34,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:34,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -343069422, now seen corresponding path program 1 times [2024-11-18 14:03:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168241958] [2024-11-18 14:03:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:34,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:34,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168241958] [2024-11-18 14:03:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168241958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:34,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116994026] [2024-11-18 14:03:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:34,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:34,541 INFO L87 Difference]: Start difference. First operand 600 states and 991 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:03:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:34,588 INFO L93 Difference]: Finished difference Result 1182 states and 1963 transitions. [2024-11-18 14:03:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-18 14:03:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:34,593 INFO L225 Difference]: With dead ends: 1182 [2024-11-18 14:03:34,593 INFO L226 Difference]: Without dead ends: 570 [2024-11-18 14:03:34,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:34,596 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 14 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:34,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2878 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-18 14:03:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-11-18 14:03:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 439 states have (on average 1.65375854214123) internal successors, (726), 455 states have internal predecessors, (726), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 935 transitions. [2024-11-18 14:03:34,613 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 935 transitions. Word has length 100 [2024-11-18 14:03:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:34,614 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 935 transitions. [2024-11-18 14:03:34,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:03:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 935 transitions. [2024-11-18 14:03:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 14:03:34,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:34,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:34,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:03:34,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:34,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1053232070, now seen corresponding path program 1 times [2024-11-18 14:03:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131508990] [2024-11-18 14:03:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:34,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131508990] [2024-11-18 14:03:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131508990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:34,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:34,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:34,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116476887] [2024-11-18 14:03:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:34,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:34,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:34,811 INFO L87 Difference]: Start difference. First operand 570 states and 935 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:34,879 INFO L93 Difference]: Finished difference Result 1133 states and 1869 transitions. [2024-11-18 14:03:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-11-18 14:03:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:34,883 INFO L225 Difference]: With dead ends: 1133 [2024-11-18 14:03:34,883 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:03:34,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:34,887 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 63 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:34,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5492 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:03:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-11-18 14:03:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6466512702078522) internal successors, (713), 449 states have internal predecessors, (713), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 922 transitions. [2024-11-18 14:03:34,907 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 922 transitions. Word has length 101 [2024-11-18 14:03:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:34,907 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 922 transitions. [2024-11-18 14:03:34,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 922 transitions. [2024-11-18 14:03:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:03:34,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:34,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:34,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:03:34,910 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:34,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1578917970, now seen corresponding path program 1 times [2024-11-18 14:03:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:34,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594146633] [2024-11-18 14:03:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:35,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594146633] [2024-11-18 14:03:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594146633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:35,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:35,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839150316] [2024-11-18 14:03:35,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:35,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:35,105 INFO L87 Difference]: Start difference. First operand 564 states and 922 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:35,201 INFO L93 Difference]: Finished difference Result 1121 states and 1843 transitions. [2024-11-18 14:03:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-11-18 14:03:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:35,208 INFO L225 Difference]: With dead ends: 1121 [2024-11-18 14:03:35,208 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:35,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:35,212 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 49 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:35,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5432 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.639344262295082) internal successors, (700), 443 states have internal predecessors, (700), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 909 transitions. [2024-11-18 14:03:35,241 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 909 transitions. Word has length 102 [2024-11-18 14:03:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 909 transitions. [2024-11-18 14:03:35,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 909 transitions. [2024-11-18 14:03:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:03:35,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:35,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:35,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:03:35,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:35,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:35,245 INFO L85 PathProgramCache]: Analyzing trace with hash 398330771, now seen corresponding path program 1 times [2024-11-18 14:03:35,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:35,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954306640] [2024-11-18 14:03:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:35,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954306640] [2024-11-18 14:03:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954306640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:35,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68991789] [2024-11-18 14:03:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:35,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:35,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:35,444 INFO L87 Difference]: Start difference. First operand 558 states and 909 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:35,513 INFO L93 Difference]: Finished difference Result 1109 states and 1817 transitions. [2024-11-18 14:03:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-11-18 14:03:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:35,519 INFO L225 Difference]: With dead ends: 1109 [2024-11-18 14:03:35,519 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:35,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:35,524 INFO L432 NwaCegarLoop]: 901 mSDtfsCounter, 24 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:35,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5384 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6370023419203747) internal successors, (699), 443 states have internal predecessors, (699), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 908 transitions. [2024-11-18 14:03:35,545 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 908 transitions. Word has length 102 [2024-11-18 14:03:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:35,546 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 908 transitions. [2024-11-18 14:03:35,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 908 transitions. [2024-11-18 14:03:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 14:03:35,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:35,550 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:35,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:03:35,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:35,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1532162910, now seen corresponding path program 1 times [2024-11-18 14:03:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302328076] [2024-11-18 14:03:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:35,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:35,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302328076] [2024-11-18 14:03:35,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302328076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:35,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:35,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:35,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894028094] [2024-11-18 14:03:35,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:35,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:35,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:35,666 INFO L87 Difference]: Start difference. First operand 558 states and 908 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2024-11-18 14:03:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:35,722 INFO L93 Difference]: Finished difference Result 1100 states and 1802 transitions. [2024-11-18 14:03:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 103 [2024-11-18 14:03:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:35,727 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 14:03:35,727 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:35,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:35,731 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 15 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:35,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2664 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6346604215456675) internal successors, (698), 443 states have internal predecessors, (698), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 907 transitions. [2024-11-18 14:03:35,751 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 907 transitions. Word has length 103 [2024-11-18 14:03:35,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:35,751 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 907 transitions. [2024-11-18 14:03:35,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2024-11-18 14:03:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 907 transitions. [2024-11-18 14:03:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:03:35,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:35,755 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:35,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:03:35,755 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:35,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash -810022222, now seen corresponding path program 1 times [2024-11-18 14:03:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:35,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77303846] [2024-11-18 14:03:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:35,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77303846] [2024-11-18 14:03:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77303846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:35,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705873437] [2024-11-18 14:03:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:35,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:35,873 INFO L87 Difference]: Start difference. First operand 558 states and 907 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) [2024-11-18 14:03:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:35,924 INFO L93 Difference]: Finished difference Result 1100 states and 1800 transitions. [2024-11-18 14:03:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:35,928 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 104 [2024-11-18 14:03:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:35,931 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 14:03:35,931 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:35,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:35,937 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 14 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:35,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2666 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:35,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6323185011709602) internal successors, (697), 443 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2024-11-18 14:03:35,951 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 104 [2024-11-18 14:03:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:35,951 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2024-11-18 14:03:35,951 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) [2024-11-18 14:03:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2024-11-18 14:03:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:03:35,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:35,953 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:35,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:03:35,953 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:35,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1473273379, now seen corresponding path program 1 times [2024-11-18 14:03:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:35,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795823236] [2024-11-18 14:03:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:36,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:36,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795823236] [2024-11-18 14:03:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795823236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:36,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:36,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885751034] [2024-11-18 14:03:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:36,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:36,034 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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) [2024-11-18 14:03:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:36,067 INFO L93 Difference]: Finished difference Result 1100 states and 1798 transitions. [2024-11-18 14:03:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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 105 [2024-11-18 14:03:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:36,070 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 14:03:36,070 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:36,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:36,073 INFO L432 NwaCegarLoop]: 895 mSDtfsCounter, 13 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:36,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2668 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.629976580796253) internal successors, (696), 443 states have internal predecessors, (696), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2024-11-18 14:03:36,086 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 105 [2024-11-18 14:03:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:36,087 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2024-11-18 14:03:36,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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) [2024-11-18 14:03:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2024-11-18 14:03:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 14:03:36,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:36,089 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:36,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:03:36,089 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:36,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1117583639, now seen corresponding path program 1 times [2024-11-18 14:03:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342557355] [2024-11-18 14:03:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342557355] [2024-11-18 14:03:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342557355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:36,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:36,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882478739] [2024-11-18 14:03:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:36,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:36,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:36,176 INFO L87 Difference]: Start difference. First operand 558 states and 905 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2024-11-18 14:03:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:36,209 INFO L93 Difference]: Finished difference Result 1100 states and 1796 transitions. [2024-11-18 14:03:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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 106 [2024-11-18 14:03:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:36,212 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 14:03:36,213 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:03:36,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:36,216 INFO L432 NwaCegarLoop]: 896 mSDtfsCounter, 12 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:36,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2670 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:03:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:03:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 443 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-18 14:03:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2024-11-18 14:03:36,248 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 106 [2024-11-18 14:03:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:36,249 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2024-11-18 14:03:36,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2024-11-18 14:03:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2024-11-18 14:03:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:03:36,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:36,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:36,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:03:36,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:36,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 557726952, now seen corresponding path program 1 times [2024-11-18 14:03:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223753200] [2024-11-18 14:03:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:36,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223753200] [2024-11-18 14:03:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223753200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:36,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:36,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:36,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128599087] [2024-11-18 14:03:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:36,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:36,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:36,411 INFO L87 Difference]: Start difference. First operand 558 states and 904 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:03:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:36,946 INFO L93 Difference]: Finished difference Result 1583 states and 2594 transitions. [2024-11-18 14:03:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2024-11-18 14:03:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:36,952 INFO L225 Difference]: With dead ends: 1583 [2024-11-18 14:03:36,952 INFO L226 Difference]: Without dead ends: 1043 [2024-11-18 14:03:36,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:36,956 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 768 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:36,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 4401 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-18 14:03:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1035. [2024-11-18 14:03:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 795 states have (on average 1.5937106918238995) internal successors, (1267), 825 states have internal predecessors, (1267), 194 states have call successors, (194), 49 states have call predecessors, (194), 45 states have return successors, (195), 185 states have call predecessors, (195), 190 states have call successors, (195) [2024-11-18 14:03:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1656 transitions. [2024-11-18 14:03:36,990 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1656 transitions. Word has length 107 [2024-11-18 14:03:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:36,990 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1656 transitions. [2024-11-18 14:03:36,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:03:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1656 transitions. [2024-11-18 14:03:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:03:36,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:36,993 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:36,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:03:36,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:36,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 161433104, now seen corresponding path program 1 times [2024-11-18 14:03:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:36,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143252314] [2024-11-18 14:03:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143252314] [2024-11-18 14:03:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143252314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887772432] [2024-11-18 14:03:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:37,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:37,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:37,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:37,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:03:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:37,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:37,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:37,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887772432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:37,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:03:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791497891] [2024-11-18 14:03:37,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:37,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:37,623 INFO L87 Difference]: Start difference. First operand 1035 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:03:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:37,689 INFO L93 Difference]: Finished difference Result 2983 states and 4840 transitions. [2024-11-18 14:03:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:37,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-11-18 14:03:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:37,698 INFO L225 Difference]: With dead ends: 2983 [2024-11-18 14:03:37,698 INFO L226 Difference]: Without dead ends: 1966 [2024-11-18 14:03:37,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:37,704 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 827 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:37,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1770 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2024-11-18 14:03:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1905. [2024-11-18 14:03:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1472 states have (on average 1.612092391304348) internal successors, (2373), 1532 states have internal predecessors, (2373), 347 states have call successors, (347), 88 states have call predecessors, (347), 85 states have return successors, (362), 334 states have call predecessors, (362), 343 states have call successors, (362) [2024-11-18 14:03:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3082 transitions. [2024-11-18 14:03:37,779 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3082 transitions. Word has length 113 [2024-11-18 14:03:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:37,780 INFO L471 AbstractCegarLoop]: Abstraction has 1905 states and 3082 transitions. [2024-11-18 14:03:37,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:03:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3082 transitions. [2024-11-18 14:03:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:03:37,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:37,785 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:37,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:37,989 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,SelfDestructingSolverStorable11 [2024-11-18 14:03:37,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:37,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash 225388402, now seen corresponding path program 1 times [2024-11-18 14:03:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:37,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207235434] [2024-11-18 14:03:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:37,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:38,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207235434] [2024-11-18 14:03:38,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207235434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:38,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248102266] [2024-11-18 14:03:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:38,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:38,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:03:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:38,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:38,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:38,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248102266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:03:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931981148] [2024-11-18 14:03:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:38,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:38,623 INFO L87 Difference]: Start difference. First operand 1905 states and 3082 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:03:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:38,751 INFO L93 Difference]: Finished difference Result 4275 states and 6954 transitions. [2024-11-18 14:03:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-11-18 14:03:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:38,765 INFO L225 Difference]: With dead ends: 4275 [2024-11-18 14:03:38,765 INFO L226 Difference]: Without dead ends: 2388 [2024-11-18 14:03:38,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:38,775 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 826 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:38,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1701 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2024-11-18 14:03:38,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2341. [2024-11-18 14:03:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 1812 states have (on average 1.6241721854304636) internal successors, (2943), 1887 states have internal predecessors, (2943), 424 states have call successors, (424), 106 states have call predecessors, (424), 104 states have return successors, (443), 410 states have call predecessors, (443), 420 states have call successors, (443) [2024-11-18 14:03:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3810 transitions. [2024-11-18 14:03:38,853 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3810 transitions. Word has length 114 [2024-11-18 14:03:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:38,854 INFO L471 AbstractCegarLoop]: Abstraction has 2341 states and 3810 transitions. [2024-11-18 14:03:38,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:03:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3810 transitions. [2024-11-18 14:03:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-18 14:03:38,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:38,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:38,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:39,057 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,SelfDestructingSolverStorable12 [2024-11-18 14:03:39,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:39,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1443928935, now seen corresponding path program 1 times [2024-11-18 14:03:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026060057] [2024-11-18 14:03:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:39,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:39,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026060057] [2024-11-18 14:03:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026060057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174682479] [2024-11-18 14:03:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:39,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:39,206 INFO L87 Difference]: Start difference. First operand 2341 states and 3810 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:03:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:39,697 INFO L93 Difference]: Finished difference Result 6919 states and 11490 transitions. [2024-11-18 14:03:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-11-18 14:03:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:39,727 INFO L225 Difference]: With dead ends: 6919 [2024-11-18 14:03:39,727 INFO L226 Difference]: Without dead ends: 4596 [2024-11-18 14:03:39,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:39,743 INFO L432 NwaCegarLoop]: 1014 mSDtfsCounter, 899 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:39,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 4660 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2024-11-18 14:03:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 4543. [2024-11-18 14:03:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 3519 states have (on average 1.620346689400398) internal successors, (5702), 3664 states have internal predecessors, (5702), 818 states have call successors, (818), 206 states have call predecessors, (818), 205 states have return successors, (1003), 798 states have call predecessors, (1003), 812 states have call successors, (1003) [2024-11-18 14:03:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 7523 transitions. [2024-11-18 14:03:39,982 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 7523 transitions. Word has length 115 [2024-11-18 14:03:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:39,983 INFO L471 AbstractCegarLoop]: Abstraction has 4543 states and 7523 transitions. [2024-11-18 14:03:39,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:03:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 7523 transitions. [2024-11-18 14:03:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:03:39,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:39,986 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:39,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:03:39,987 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:39,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash -478542516, now seen corresponding path program 1 times [2024-11-18 14:03:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594454302] [2024-11-18 14:03:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:40,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:40,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594454302] [2024-11-18 14:03:40,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594454302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:40,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983934336] [2024-11-18 14:03:40,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:40,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:40,081 INFO L87 Difference]: Start difference. First operand 4543 states and 7523 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:03:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:40,323 INFO L93 Difference]: Finished difference Result 9092 states and 15189 transitions. [2024-11-18 14:03:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-11-18 14:03:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:40,365 INFO L225 Difference]: With dead ends: 9092 [2024-11-18 14:03:40,366 INFO L226 Difference]: Without dead ends: 4567 [2024-11-18 14:03:40,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:40,474 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 12 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2634 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 [2024-11-18 14:03:40,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2634 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2024-11-18 14:03:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4551. [2024-11-18 14:03:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 3525 states have (on average 1.6187234042553191) internal successors, (5706), 3670 states have internal predecessors, (5706), 818 states have call successors, (818), 210 states have call predecessors, (818), 207 states have return successors, (993), 796 states have call predecessors, (993), 812 states have call successors, (993) [2024-11-18 14:03:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 7517 transitions. [2024-11-18 14:03:40,722 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 7517 transitions. Word has length 118 [2024-11-18 14:03:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:40,723 INFO L471 AbstractCegarLoop]: Abstraction has 4551 states and 7517 transitions. [2024-11-18 14:03:40,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 14:03:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 7517 transitions. [2024-11-18 14:03:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 14:03:40,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:40,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:40,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:03:40,728 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:40,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1553151104, now seen corresponding path program 1 times [2024-11-18 14:03:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915929250] [2024-11-18 14:03:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:03:40,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915929250] [2024-11-18 14:03:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915929250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:40,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679468026] [2024-11-18 14:03:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:40,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:40,903 INFO L87 Difference]: Start difference. First operand 4551 states and 7517 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:03:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:41,688 INFO L93 Difference]: Finished difference Result 13598 states and 23049 transitions. [2024-11-18 14:03:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-18 14:03:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:41,750 INFO L225 Difference]: With dead ends: 13598 [2024-11-18 14:03:41,751 INFO L226 Difference]: Without dead ends: 9065 [2024-11-18 14:03:41,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:41,773 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 894 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:41,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 4511 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2024-11-18 14:03:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 8996. [2024-11-18 14:03:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8996 states, 6971 states have (on average 1.6154066848371826) internal successors, (11261), 7256 states have internal predecessors, (11261), 1611 states have call successors, (1611), 414 states have call predecessors, (1611), 413 states have return successors, (2318), 1577 states have call predecessors, (2318), 1601 states have call successors, (2318) [2024-11-18 14:03:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8996 states to 8996 states and 15190 transitions. [2024-11-18 14:03:42,133 INFO L78 Accepts]: Start accepts. Automaton has 8996 states and 15190 transitions. Word has length 125 [2024-11-18 14:03:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:42,134 INFO L471 AbstractCegarLoop]: Abstraction has 8996 states and 15190 transitions. [2024-11-18 14:03:42,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:03:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8996 states and 15190 transitions. [2024-11-18 14:03:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:03:42,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:42,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:42,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:03:42,139 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:42,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 43838476, now seen corresponding path program 1 times [2024-11-18 14:03:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607976379] [2024-11-18 14:03:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:03:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607976379] [2024-11-18 14:03:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607976379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:42,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573001173] [2024-11-18 14:03:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:42,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:42,386 INFO L87 Difference]: Start difference. First operand 8996 states and 15190 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:03:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:42,845 INFO L93 Difference]: Finished difference Result 18046 states and 30865 transitions. [2024-11-18 14:03:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-18 14:03:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:42,923 INFO L225 Difference]: With dead ends: 18046 [2024-11-18 14:03:42,924 INFO L226 Difference]: Without dead ends: 9068 [2024-11-18 14:03:42,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:42,994 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 12 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2625 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 [2024-11-18 14:03:42,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2625 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2024-11-18 14:03:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 9036. [2024-11-18 14:03:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9036 states, 7007 states have (on average 1.6128157556728986) internal successors, (11301), 7284 states have internal predecessors, (11301), 1611 states have call successors, (1611), 430 states have call predecessors, (1611), 417 states have return successors, (2304), 1573 states have call predecessors, (2304), 1601 states have call successors, (2304) [2024-11-18 14:03:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9036 states to 9036 states and 15216 transitions. [2024-11-18 14:03:43,402 INFO L78 Accepts]: Start accepts. Automaton has 9036 states and 15216 transitions. Word has length 128 [2024-11-18 14:03:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:43,403 INFO L471 AbstractCegarLoop]: Abstraction has 9036 states and 15216 transitions. [2024-11-18 14:03:43,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:03:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9036 states and 15216 transitions. [2024-11-18 14:03:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 14:03:43,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:43,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:43,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:03:43,409 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:43,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash -418275265, now seen corresponding path program 1 times [2024-11-18 14:03:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675920571] [2024-11-18 14:03:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:03:43,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:43,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675920571] [2024-11-18 14:03:43,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675920571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:43,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682160571] [2024-11-18 14:03:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:43,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:43,554 INFO L87 Difference]: Start difference. First operand 9036 states and 15216 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:03:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:44,898 INFO L93 Difference]: Finished difference Result 27126 states and 47389 transitions. [2024-11-18 14:03:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2024-11-18 14:03:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:45,057 INFO L225 Difference]: With dead ends: 27126 [2024-11-18 14:03:45,057 INFO L226 Difference]: Without dead ends: 18108 [2024-11-18 14:03:45,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:45,150 INFO L432 NwaCegarLoop]: 1011 mSDtfsCounter, 889 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:45,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 4668 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:03:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18108 states. [2024-11-18 14:03:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18108 to 18007. [2024-11-18 14:03:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18007 states, 13967 states have (on average 1.6096513209708598) internal successors, (22482), 14516 states have internal predecessors, (22482), 3202 states have call successors, (3202), 854 states have call predecessors, (3202), 837 states have return successors, (5629), 3140 states have call predecessors, (5629), 3184 states have call successors, (5629) [2024-11-18 14:03:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18007 states to 18007 states and 31313 transitions. [2024-11-18 14:03:46,131 INFO L78 Accepts]: Start accepts. Automaton has 18007 states and 31313 transitions. Word has length 137 [2024-11-18 14:03:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:46,134 INFO L471 AbstractCegarLoop]: Abstraction has 18007 states and 31313 transitions. [2024-11-18 14:03:46,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:03:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18007 states and 31313 transitions. [2024-11-18 14:03:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 14:03:46,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:46,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:46,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:03:46,139 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:46,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1229514506, now seen corresponding path program 1 times [2024-11-18 14:03:46,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:46,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771916619] [2024-11-18 14:03:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:46,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:03:46,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771916619] [2024-11-18 14:03:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771916619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:46,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:46,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399182784] [2024-11-18 14:03:46,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:46,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:46,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:46,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:46,222 INFO L87 Difference]: Start difference. First operand 18007 states and 31313 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:03:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:47,394 INFO L93 Difference]: Finished difference Result 36140 states and 64207 transitions. [2024-11-18 14:03:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-18 14:03:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:47,549 INFO L225 Difference]: With dead ends: 36140 [2024-11-18 14:03:47,550 INFO L226 Difference]: Without dead ends: 18151 [2024-11-18 14:03:47,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:47,805 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 11 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:47,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2628 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18151 states. [2024-11-18 14:03:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18151 to 18087. [2024-11-18 14:03:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18087 states, 14039 states have (on average 1.6070945224018804) internal successors, (22562), 14588 states have internal predecessors, (22562), 3202 states have call successors, (3202), 870 states have call predecessors, (3202), 845 states have return successors, (5613), 3132 states have call predecessors, (5613), 3184 states have call successors, (5613) [2024-11-18 14:03:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18087 states to 18087 states and 31377 transitions. [2024-11-18 14:03:49,158 INFO L78 Accepts]: Start accepts. Automaton has 18087 states and 31377 transitions. Word has length 139 [2024-11-18 14:03:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:49,160 INFO L471 AbstractCegarLoop]: Abstraction has 18087 states and 31377 transitions. [2024-11-18 14:03:49,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:03:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 18087 states and 31377 transitions. [2024-11-18 14:03:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 14:03:49,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:49,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:49,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:03:49,167 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:49,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -269533144, now seen corresponding path program 1 times [2024-11-18 14:03:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563832344] [2024-11-18 14:03:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:03:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563832344] [2024-11-18 14:03:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563832344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969957072] [2024-11-18 14:03:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:49,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:49,306 INFO L87 Difference]: Start difference. First operand 18087 states and 31377 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:03:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:51,711 INFO L93 Difference]: Finished difference Result 54400 states and 99807 transitions. [2024-11-18 14:03:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 149 [2024-11-18 14:03:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:52,186 INFO L225 Difference]: With dead ends: 54400 [2024-11-18 14:03:52,186 INFO L226 Difference]: Without dead ends: 36331 [2024-11-18 14:03:52,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:52,314 INFO L432 NwaCegarLoop]: 965 mSDtfsCounter, 886 mSDsluCounter, 3530 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:52,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 4495 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36331 states. [2024-11-18 14:03:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36331 to 36166. [2024-11-18 14:03:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36166 states, 28075 states have (on average 1.6039536954585931) internal successors, (45031), 29168 states have internal predecessors, (45031), 6389 states have call successors, (6389), 1734 states have call predecessors, (6389), 1701 states have return successors, (14622), 6271 states have call predecessors, (14622), 6355 states have call successors, (14622) [2024-11-18 14:03:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36166 states to 36166 states and 66042 transitions. [2024-11-18 14:03:54,751 INFO L78 Accepts]: Start accepts. Automaton has 36166 states and 66042 transitions. Word has length 149 [2024-11-18 14:03:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:54,752 INFO L471 AbstractCegarLoop]: Abstraction has 36166 states and 66042 transitions. [2024-11-18 14:03:54,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:03:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36166 states and 66042 transitions. [2024-11-18 14:03:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 14:03:54,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:54,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:54,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:03:54,759 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:54,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash -602123640, now seen corresponding path program 1 times [2024-11-18 14:03:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626322011] [2024-11-18 14:03:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:54,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:03:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626322011] [2024-11-18 14:03:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626322011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:54,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:54,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147332324] [2024-11-18 14:03:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:54,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:54,849 INFO L87 Difference]: Start difference. First operand 36166 states and 66042 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:03:58,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:58,013 INFO L93 Difference]: Finished difference Result 72567 states and 137471 transitions. [2024-11-18 14:03:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:58,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2024-11-18 14:03:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:58,402 INFO L225 Difference]: With dead ends: 72567 [2024-11-18 14:03:58,402 INFO L226 Difference]: Without dead ends: 36371 [2024-11-18 14:03:59,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:59,080 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 9 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:59,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2625 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2024-11-18 14:04:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 36245. [2024-11-18 14:04:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36245 states, 28147 states have (on average 1.6008455608057697) internal successors, (45059), 29253 states have internal predecessors, (45059), 6382 states have call successors, (6382), 1748 states have call predecessors, (6382), 1715 states have return successors, (14522), 6250 states have call predecessors, (14522), 6348 states have call successors, (14522) [2024-11-18 14:04:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36245 states to 36245 states and 65963 transitions. [2024-11-18 14:04:01,263 INFO L78 Accepts]: Start accepts. Automaton has 36245 states and 65963 transitions. Word has length 151 [2024-11-18 14:04:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:01,266 INFO L471 AbstractCegarLoop]: Abstraction has 36245 states and 65963 transitions. [2024-11-18 14:04:01,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:04:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 36245 states and 65963 transitions. [2024-11-18 14:04:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-18 14:04:01,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:01,280 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:01,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:04:01,280 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:01,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2029678111, now seen corresponding path program 1 times [2024-11-18 14:04:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887378440] [2024-11-18 14:04:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:04:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887378440] [2024-11-18 14:04:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887378440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444135033] [2024-11-18 14:04:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:01,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:01,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:04:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:04:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:01,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:04:01,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:04:01,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444135033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:04:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196422244] [2024-11-18 14:04:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:01,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:04:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:04:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:04:01,777 INFO L87 Difference]: Start difference. First operand 36245 states and 65963 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 14:04:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:04,710 INFO L93 Difference]: Finished difference Result 80869 states and 151897 transitions. [2024-11-18 14:04:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:04:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2024-11-18 14:04:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:05,398 INFO L225 Difference]: With dead ends: 80869 [2024-11-18 14:04:05,398 INFO L226 Difference]: Without dead ends: 58485 [2024-11-18 14:04:05,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:04:05,555 INFO L432 NwaCegarLoop]: 973 mSDtfsCounter, 888 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:05,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1854 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:04:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58485 states. [2024-11-18 14:04:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58485 to 58241. [2024-11-18 14:04:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58241 states, 45345 states have (on average 1.614158121071783) internal successors, (73194), 47061 states have internal predecessors, (73194), 10124 states have call successors, (10124), 2756 states have call predecessors, (10124), 2771 states have return successors, (24849), 10054 states have call predecessors, (24849), 10074 states have call successors, (24849) [2024-11-18 14:04:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58241 states to 58241 states and 108167 transitions. [2024-11-18 14:04:08,727 INFO L78 Accepts]: Start accepts. Automaton has 58241 states and 108167 transitions. Word has length 185 [2024-11-18 14:04:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:08,728 INFO L471 AbstractCegarLoop]: Abstraction has 58241 states and 108167 transitions. [2024-11-18 14:04:08,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 14:04:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 58241 states and 108167 transitions. [2024-11-18 14:04:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-18 14:04:08,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:08,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:04:08,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:04:08,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:08,949 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:08,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash -180341170, now seen corresponding path program 1 times [2024-11-18 14:04:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:08,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705810557] [2024-11-18 14:04:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:08,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:04:09,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705810557] [2024-11-18 14:04:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705810557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022342027] [2024-11-18 14:04:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:09,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:04:09,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:04:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:09,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:04:09,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:04:09,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022342027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-18 14:04:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935206683] [2024-11-18 14:04:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:09,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:04:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:04:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:04:09,945 INFO L87 Difference]: Start difference. First operand 58241 states and 108167 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-18 14:04:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:04:19,595 INFO L93 Difference]: Finished difference Result 153528 states and 309151 transitions. [2024-11-18 14:04:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:04:19,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 189 [2024-11-18 14:04:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:04:20,538 INFO L225 Difference]: With dead ends: 153528 [2024-11-18 14:04:20,539 INFO L226 Difference]: Without dead ends: 91417 [2024-11-18 14:04:21,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:04:21,973 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 2419 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 4884 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 4884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:04:21,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 2198 Invalid, 5666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 4884 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 14:04:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91417 states. [2024-11-18 14:04:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91417 to 82221. [2024-11-18 14:04:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82221 states, 63999 states have (on average 1.6112908014187721) internal successors, (103121), 66389 states have internal predecessors, (103121), 14250 states have call successors, (14250), 3732 states have call predecessors, (14250), 3971 states have return successors, (39780), 14226 states have call predecessors, (39780), 14184 states have call successors, (39780) [2024-11-18 14:04:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82221 states to 82221 states and 157151 transitions. [2024-11-18 14:04:27,872 INFO L78 Accepts]: Start accepts. Automaton has 82221 states and 157151 transitions. Word has length 189 [2024-11-18 14:04:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:27,875 INFO L471 AbstractCegarLoop]: Abstraction has 82221 states and 157151 transitions. [2024-11-18 14:04:27,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-18 14:04:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 82221 states and 157151 transitions. [2024-11-18 14:04:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 14:04:27,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:27,893 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:27,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:04:28,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:28,095 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:28,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1884394105, now seen corresponding path program 1 times [2024-11-18 14:04:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073483903] [2024-11-18 14:04:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-18 14:04:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073483903] [2024-11-18 14:04:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073483903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800542556] [2024-11-18 14:04:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:28,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:28,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:04:28,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:04:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:28,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 2140 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:04:28,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:04:28,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:28,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800542556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:28,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:28,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-18 14:04:28,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339084876] [2024-11-18 14:04:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:28,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:04:28,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:04:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:04:28,901 INFO L87 Difference]: Start difference. First operand 82221 states and 157151 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25)