./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product23.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 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:46:24,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:46:24,077 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:46:24,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:46:24,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:46:24,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:46:24,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:46:24,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:46:24,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:46:24,111 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:46:24,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:46:24,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:46:24,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:46:24,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:46:24,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:46:24,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:46:24,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:46:24,113 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:46:24,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:46:24,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:46:24,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:46:24,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:46:24,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:46:24,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:46:24,115 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:46:24,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:46:24,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:46:24,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:46:24,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:46:24,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:46:24,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:46:24,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:46:24,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:46:24,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:46:24,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:46:24,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:46:24,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:46:24,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:46:24,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:46:24,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:46:24,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:46:24,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:46:24,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 [2024-11-22 01:46:24,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:46:24,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:46:24,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:46:24,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:46:24,404 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:46:24,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2024-11-22 01:46:26,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:46:26,326 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:46:26,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2024-11-22 01:46:26,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd62da610/11d49d722ece4af0a4bae7daeb36b565/FLAG2432ef355 [2024-11-22 01:46:26,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd62da610/11d49d722ece4af0a4bae7daeb36b565 [2024-11-22 01:46:26,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:46:26,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:46:26,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:46:26,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:46:26,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:46:26,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:26" (1/1) ... [2024-11-22 01:46:26,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a3768c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:26, skipping insertion in model container [2024-11-22 01:46:26,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:26" (1/1) ... [2024-11-22 01:46:26,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:46:26,921 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_spec2_product23.cil.c[35995,36008] [2024-11-22 01:46:27,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:46:27,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:46:27,058 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2024-11-22 01:46:27,060 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [235] [2024-11-22 01:46:27,060 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [273] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [941] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1307] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1665] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1674] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1766] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1778] [2024-11-22 01:46:27,061 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1898] [2024-11-22 01:46:27,127 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_spec2_product23.cil.c[35995,36008] [2024-11-22 01:46:27,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:46:27,204 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:46:27,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27 WrapperNode [2024-11-22 01:46:27,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:46:27,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:46:27,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:46:27,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:46:27,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,302 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 921 [2024-11-22 01:46:27,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:46:27,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:46:27,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:46:27,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:46:27,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,369 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-22 01:46:27,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:46:27,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:46:27,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:46:27,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:46:27,446 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (1/1) ... [2024-11-22 01:46:27,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:46:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:27,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:46:27,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:46:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:46:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-22 01:46:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-22 01:46:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-22 01:46:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-22 01:46:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-22 01:46:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-22 01:46:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-22 01:46:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-22 01:46:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-22 01:46:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-22 01:46:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-22 01:46:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-22 01:46:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-22 01:46:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-22 01:46:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-22 01:46:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-22 01:46:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-22 01:46:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-22 01:46:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-22 01:46:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-22 01:46:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-22 01:46:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-22 01:46:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-22 01:46:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-22 01:46:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-22 01:46:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-22 01:46:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-22 01:46:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-22 01:46:27,589 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-22 01:46:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 01:46:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 01:46:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-22 01:46:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-22 01:46:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-22 01:46:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-22 01:46:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-22 01:46:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-22 01:46:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:46:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:46:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-22 01:46:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-22 01:46:27,760 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:46:27,762 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:46:28,609 INFO L? ?]: Removed 471 outVars from TransFormulas that were not future-live. [2024-11-22 01:46:28,609 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:46:28,641 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:46:28,641 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:46:28,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:28 BoogieIcfgContainer [2024-11-22 01:46:28,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:46:28,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:46:28,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:46:28,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:46:28,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:46:26" (1/3) ... [2024-11-22 01:46:28,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7e0540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:28, skipping insertion in model container [2024-11-22 01:46:28,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:27" (2/3) ... [2024-11-22 01:46:28,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7e0540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:28, skipping insertion in model container [2024-11-22 01:46:28,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:28" (3/3) ... [2024-11-22 01:46:28,656 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2024-11-22 01:46:28,669 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:46:28,669 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:46:28,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:46:28,882 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;@17cba779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:46:28,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:46:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 587 states, 457 states have (on average 1.6783369803063457) internal successors, (767), 478 states have internal predecessors, (767), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-22 01:46:28,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 01:46:28,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:28,933 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:28,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:28,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash -253611575, now seen corresponding path program 1 times [2024-11-22 01:46:28,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438751383] [2024-11-22 01:46:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438751383] [2024-11-22 01:46:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438751383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:29,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:29,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786040306] [2024-11-22 01:46:29,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:29,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:29,555 INFO L87 Difference]: Start difference. First operand has 587 states, 457 states have (on average 1.6783369803063457) internal successors, (767), 478 states have internal predecessors, (767), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:29,680 INFO L93 Difference]: Finished difference Result 1154 states and 1917 transitions. [2024-11-22 01:46:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2024-11-22 01:46:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:29,698 INFO L225 Difference]: With dead ends: 1154 [2024-11-22 01:46:29,699 INFO L226 Difference]: Without dead ends: 579 [2024-11-22 01:46:29,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:29,708 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 5 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:29,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2846 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-22 01:46:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-22 01:46:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 470 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 954 transitions. [2024-11-22 01:46:29,824 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 954 transitions. Word has length 104 [2024-11-22 01:46:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:29,827 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 954 transitions. [2024-11-22 01:46:29,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 954 transitions. [2024-11-22 01:46:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 01:46:29,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:29,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:29,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:46:29,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:29,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -865857752, now seen corresponding path program 1 times [2024-11-22 01:46:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:29,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978506954] [2024-11-22 01:46:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978506954] [2024-11-22 01:46:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978506954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104244028] [2024-11-22 01:46:30,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:30,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:30,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,127 INFO L87 Difference]: Start difference. First operand 579 states and 954 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:30,307 INFO L93 Difference]: Finished difference Result 1140 states and 1885 transitions. [2024-11-22 01:46:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2024-11-22 01:46:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:30,318 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 01:46:30,318 INFO L226 Difference]: Without dead ends: 579 [2024-11-22 01:46:30,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,326 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 4 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:30,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2825 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-22 01:46:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-22 01:46:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.671840354767184) internal successors, (754), 470 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 953 transitions. [2024-11-22 01:46:30,371 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 953 transitions. Word has length 107 [2024-11-22 01:46:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:30,372 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 953 transitions. [2024-11-22 01:46:30,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 953 transitions. [2024-11-22 01:46:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-22 01:46:30,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:30,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:30,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:46:30,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:30,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash 569294233, now seen corresponding path program 1 times [2024-11-22 01:46:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358811246] [2024-11-22 01:46:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358811246] [2024-11-22 01:46:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358811246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:30,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025954838] [2024-11-22 01:46:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:30,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,518 INFO L87 Difference]: Start difference. First operand 579 states and 953 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:30,561 INFO L93 Difference]: Finished difference Result 1140 states and 1884 transitions. [2024-11-22 01:46:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2024-11-22 01:46:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:30,565 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 01:46:30,565 INFO L226 Difference]: Without dead ends: 579 [2024-11-22 01:46:30,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,569 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 3 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:30,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2825 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-22 01:46:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-22 01:46:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 470 states have internal predecessors, (753), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 952 transitions. [2024-11-22 01:46:30,596 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 952 transitions. Word has length 108 [2024-11-22 01:46:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:30,596 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 952 transitions. [2024-11-22 01:46:30,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 952 transitions. [2024-11-22 01:46:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 01:46:30,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:30,601 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:30,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:46:30,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:30,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1128617020, now seen corresponding path program 1 times [2024-11-22 01:46:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499888805] [2024-11-22 01:46:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499888805] [2024-11-22 01:46:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499888805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:30,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:30,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990895176] [2024-11-22 01:46:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:30,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,755 INFO L87 Difference]: Start difference. First operand 579 states and 952 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:30,809 INFO L93 Difference]: Finished difference Result 1140 states and 1883 transitions. [2024-11-22 01:46:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:30,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-22 01:46:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:30,814 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 01:46:30,814 INFO L226 Difference]: Without dead ends: 579 [2024-11-22 01:46:30,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,820 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 2 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:30,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2825 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-22 01:46:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-22 01:46:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 470 states have internal predecessors, (752), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 951 transitions. [2024-11-22 01:46:30,848 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 951 transitions. Word has length 109 [2024-11-22 01:46:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:30,848 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 951 transitions. [2024-11-22 01:46:30,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 951 transitions. [2024-11-22 01:46:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 01:46:30,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:30,854 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:30,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:46:30,854 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:30,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1167240843, now seen corresponding path program 1 times [2024-11-22 01:46:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773631608] [2024-11-22 01:46:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:30,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:30,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773631608] [2024-11-22 01:46:30,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773631608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:30,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:30,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:30,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456695704] [2024-11-22 01:46:30,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:30,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:30,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:30,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:30,983 INFO L87 Difference]: Start difference. First operand 579 states and 951 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:31,029 INFO L93 Difference]: Finished difference Result 1140 states and 1882 transitions. [2024-11-22 01:46:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2024-11-22 01:46:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:31,035 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 01:46:31,035 INFO L226 Difference]: Without dead ends: 579 [2024-11-22 01:46:31,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:31,039 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 1 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:31,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2825 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-22 01:46:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-22 01:46:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.665188470066519) internal successors, (751), 470 states have internal predecessors, (751), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 950 transitions. [2024-11-22 01:46:31,058 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 950 transitions. Word has length 110 [2024-11-22 01:46:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:31,059 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 950 transitions. [2024-11-22 01:46:31,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 950 transitions. [2024-11-22 01:46:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 01:46:31,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:31,062 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:31,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 01:46:31,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:31,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1307561888, now seen corresponding path program 1 times [2024-11-22 01:46:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:31,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52851871] [2024-11-22 01:46:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:31,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52851871] [2024-11-22 01:46:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52851871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 01:46:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032044867] [2024-11-22 01:46:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:31,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 01:46:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 01:46:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:46:31,474 INFO L87 Difference]: Start difference. First operand 579 states and 950 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:31,641 INFO L93 Difference]: Finished difference Result 1106 states and 1814 transitions. [2024-11-22 01:46:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:46:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2024-11-22 01:46:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:31,649 INFO L225 Difference]: With dead ends: 1106 [2024-11-22 01:46:31,649 INFO L226 Difference]: Without dead ends: 594 [2024-11-22 01:46:31,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:31,655 INFO L432 NwaCegarLoop]: 938 mSDtfsCounter, 91 mSDsluCounter, 6483 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7421 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:31,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7421 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-22 01:46:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 592. [2024-11-22 01:46:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 461 states have (on average 1.6616052060737527) internal successors, (766), 482 states have internal predecessors, (766), 103 states have call successors, (103), 26 states have call predecessors, (103), 27 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-22 01:46:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 969 transitions. [2024-11-22 01:46:31,690 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 969 transitions. Word has length 111 [2024-11-22 01:46:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:31,691 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 969 transitions. [2024-11-22 01:46:31,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 969 transitions. [2024-11-22 01:46:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 01:46:31,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:31,695 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-22 01:46:31,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 01:46:31,695 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:31,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2117049345, now seen corresponding path program 1 times [2024-11-22 01:46:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105916167] [2024-11-22 01:46:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105916167] [2024-11-22 01:46:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105916167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:31,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617739640] [2024-11-22 01:46:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:31,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:31,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:31,792 INFO L87 Difference]: Start difference. First operand 592 states and 969 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:31,824 INFO L93 Difference]: Finished difference Result 1158 states and 1908 transitions. [2024-11-22 01:46:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:31,824 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-11-22 01:46:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:31,828 INFO L225 Difference]: With dead ends: 1158 [2024-11-22 01:46:31,829 INFO L226 Difference]: Without dead ends: 573 [2024-11-22 01:46:31,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:31,832 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 0 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:31,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2827 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-22 01:46:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-22 01:46:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 445 states have (on average 1.6561797752808989) internal successors, (737), 464 states have internal predecessors, (737), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 936 transitions. [2024-11-22 01:46:31,853 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 936 transitions. Word has length 111 [2024-11-22 01:46:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:31,853 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 936 transitions. [2024-11-22 01:46:31,854 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 936 transitions. [2024-11-22 01:46:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 01:46:31,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:31,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:31,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 01:46:31,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:31,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 670937558, now seen corresponding path program 1 times [2024-11-22 01:46:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106705541] [2024-11-22 01:46:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:31,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106705541] [2024-11-22 01:46:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106705541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:46:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201624379] [2024-11-22 01:46:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:31,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:46:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:46:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:46:31,986 INFO L87 Difference]: Start difference. First operand 573 states and 936 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:32,175 INFO L93 Difference]: Finished difference Result 1103 states and 1806 transitions. [2024-11-22 01:46:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-22 01:46:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:32,196 INFO L225 Difference]: With dead ends: 1103 [2024-11-22 01:46:32,197 INFO L226 Difference]: Without dead ends: 582 [2024-11-22 01:46:32,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:32,202 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 55 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:32,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4436 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-22 01:46:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 573. [2024-11-22 01:46:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 464 states have internal predecessors, (733), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 932 transitions. [2024-11-22 01:46:32,220 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 932 transitions. Word has length 112 [2024-11-22 01:46:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:32,221 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 932 transitions. [2024-11-22 01:46:32,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 932 transitions. [2024-11-22 01:46:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 01:46:32,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:32,227 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:32,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 01:46:32,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:32,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1520727229, now seen corresponding path program 1 times [2024-11-22 01:46:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917717505] [2024-11-22 01:46:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917717505] [2024-11-22 01:46:32,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917717505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:46:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744538664] [2024-11-22 01:46:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:32,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:46:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:46:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:46:32,347 INFO L87 Difference]: Start difference. First operand 573 states and 932 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:32,508 INFO L93 Difference]: Finished difference Result 1103 states and 1802 transitions. [2024-11-22 01:46:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:32,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2024-11-22 01:46:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:32,513 INFO L225 Difference]: With dead ends: 1103 [2024-11-22 01:46:32,513 INFO L226 Difference]: Without dead ends: 582 [2024-11-22 01:46:32,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:32,519 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 54 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:32,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4436 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-22 01:46:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 573. [2024-11-22 01:46:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 445 states have (on average 1.6382022471910112) internal successors, (729), 464 states have internal predecessors, (729), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 928 transitions. [2024-11-22 01:46:32,537 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 928 transitions. Word has length 113 [2024-11-22 01:46:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:32,537 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 928 transitions. [2024-11-22 01:46:32,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 928 transitions. [2024-11-22 01:46:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 01:46:32,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:32,540 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:32,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 01:46:32,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:32,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -61065797, now seen corresponding path program 1 times [2024-11-22 01:46:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824801620] [2024-11-22 01:46:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:32,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:32,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824801620] [2024-11-22 01:46:32,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824801620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:32,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:32,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:46:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154246519] [2024-11-22 01:46:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:32,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:46:32,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:46:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:46:32,662 INFO L87 Difference]: Start difference. First operand 573 states and 928 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:32,853 INFO L93 Difference]: Finished difference Result 1103 states and 1798 transitions. [2024-11-22 01:46:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:32,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-22 01:46:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:32,862 INFO L225 Difference]: With dead ends: 1103 [2024-11-22 01:46:32,862 INFO L226 Difference]: Without dead ends: 582 [2024-11-22 01:46:32,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:32,872 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 53 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:32,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4418 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-22 01:46:32,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 573. [2024-11-22 01:46:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 445 states have (on average 1.6292134831460674) internal successors, (725), 464 states have internal predecessors, (725), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 924 transitions. [2024-11-22 01:46:32,897 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 924 transitions. Word has length 114 [2024-11-22 01:46:32,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:32,897 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 924 transitions. [2024-11-22 01:46:32,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 924 transitions. [2024-11-22 01:46:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-22 01:46:32,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:32,920 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:32,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 01:46:32,920 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:32,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:32,921 INFO L85 PathProgramCache]: Analyzing trace with hash 934269499, now seen corresponding path program 1 times [2024-11-22 01:46:32,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:32,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040076692] [2024-11-22 01:46:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:32,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040076692] [2024-11-22 01:46:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040076692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:33,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:33,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:46:33,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423167831] [2024-11-22 01:46:33,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:33,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:46:33,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:33,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:46:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:33,092 INFO L87 Difference]: Start difference. First operand 573 states and 924 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:33,137 INFO L93 Difference]: Finished difference Result 1094 states and 1780 transitions. [2024-11-22 01:46:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:46:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-11-22 01:46:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:33,141 INFO L225 Difference]: With dead ends: 1094 [2024-11-22 01:46:33,142 INFO L226 Difference]: Without dead ends: 552 [2024-11-22 01:46:33,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:46:33,145 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 84 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:33,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5405 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-22 01:46:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-22 01:46:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 424 states have (on average 1.6297169811320755) internal successors, (691), 443 states have internal predecessors, (691), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 890 transitions. [2024-11-22 01:46:33,158 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 890 transitions. Word has length 114 [2024-11-22 01:46:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:33,158 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 890 transitions. [2024-11-22 01:46:33,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 890 transitions. [2024-11-22 01:46:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-22 01:46:33,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:33,161 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:33,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 01:46:33,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:33,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1374408568, now seen corresponding path program 1 times [2024-11-22 01:46:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500290883] [2024-11-22 01:46:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:33,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500290883] [2024-11-22 01:46:33,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500290883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:33,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:33,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:46:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971884954] [2024-11-22 01:46:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:33,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:46:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:46:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:46:33,279 INFO L87 Difference]: Start difference. First operand 552 states and 890 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:33,341 INFO L93 Difference]: Finished difference Result 1073 states and 1746 transitions. [2024-11-22 01:46:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-11-22 01:46:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:33,346 INFO L225 Difference]: With dead ends: 1073 [2024-11-22 01:46:33,346 INFO L226 Difference]: Without dead ends: 552 [2024-11-22 01:46:33,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:33,349 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 17 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:33,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4356 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-22 01:46:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-22 01:46:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 424 states have (on average 1.6273584905660377) internal successors, (690), 443 states have internal predecessors, (690), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 889 transitions. [2024-11-22 01:46:33,364 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 889 transitions. Word has length 115 [2024-11-22 01:46:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:33,364 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 889 transitions. [2024-11-22 01:46:33,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 889 transitions. [2024-11-22 01:46:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 01:46:33,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:33,367 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:33,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 01:46:33,368 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:33,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1543431584, now seen corresponding path program 1 times [2024-11-22 01:46:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250668574] [2024-11-22 01:46:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250668574] [2024-11-22 01:46:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250668574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:46:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777744960] [2024-11-22 01:46:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:33,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:46:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:46:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:46:33,494 INFO L87 Difference]: Start difference. First operand 552 states and 889 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:33,545 INFO L93 Difference]: Finished difference Result 1073 states and 1745 transitions. [2024-11-22 01:46:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-11-22 01:46:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:33,550 INFO L225 Difference]: With dead ends: 1073 [2024-11-22 01:46:33,551 INFO L226 Difference]: Without dead ends: 552 [2024-11-22 01:46:33,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:33,553 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 16 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:33,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4356 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-22 01:46:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-22 01:46:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 424 states have (on average 1.625) internal successors, (689), 443 states have internal predecessors, (689), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 888 transitions. [2024-11-22 01:46:33,567 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 888 transitions. Word has length 116 [2024-11-22 01:46:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:33,568 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 888 transitions. [2024-11-22 01:46:33,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 888 transitions. [2024-11-22 01:46:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-22 01:46:33,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:33,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:33,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 01:46:33,578 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:33,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1897679951, now seen corresponding path program 1 times [2024-11-22 01:46:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288112265] [2024-11-22 01:46:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:33,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:33,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288112265] [2024-11-22 01:46:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288112265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:46:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268130399] [2024-11-22 01:46:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:33,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:33,651 INFO L87 Difference]: Start difference. First operand 552 states and 888 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), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:33,673 INFO L93 Difference]: Finished difference Result 1073 states and 1744 transitions. [2024-11-22 01:46:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:46:33,673 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), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-11-22 01:46:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:33,677 INFO L225 Difference]: With dead ends: 1073 [2024-11-22 01:46:33,677 INFO L226 Difference]: Without dead ends: 552 [2024-11-22 01:46:33,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:46:33,680 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 9 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:33,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2637 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-22 01:46:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-22 01:46:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 424 states have (on average 1.6226415094339623) internal successors, (688), 443 states have internal predecessors, (688), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 887 transitions. [2024-11-22 01:46:33,693 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 887 transitions. Word has length 117 [2024-11-22 01:46:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:33,693 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 887 transitions. [2024-11-22 01:46:33,694 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), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 887 transitions. [2024-11-22 01:46:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-22 01:46:33,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:33,696 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:33,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 01:46:33,696 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:33,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1811011123, now seen corresponding path program 1 times [2024-11-22 01:46:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391423078] [2024-11-22 01:46:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:46:34,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:34,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391423078] [2024-11-22 01:46:34,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391423078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:34,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:46:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 01:46:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600106341] [2024-11-22 01:46:34,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:34,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:46:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:46:34,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:34,004 INFO L87 Difference]: Start difference. First operand 552 states and 887 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:34,145 INFO L93 Difference]: Finished difference Result 1067 states and 1732 transitions. [2024-11-22 01:46:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:46:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2024-11-22 01:46:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:34,151 INFO L225 Difference]: With dead ends: 1067 [2024-11-22 01:46:34,152 INFO L226 Difference]: Without dead ends: 552 [2024-11-22 01:46:34,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:34,156 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 5 mSDsluCounter, 6947 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7818 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:34,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7818 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:46:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-22 01:46:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-22 01:46:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 424 states have (on average 1.6202830188679245) internal successors, (687), 443 states have internal predecessors, (687), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-22 01:46:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 886 transitions. [2024-11-22 01:46:34,172 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 886 transitions. Word has length 117 [2024-11-22 01:46:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:34,172 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 886 transitions. [2024-11-22 01:46:34,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:46:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 886 transitions. [2024-11-22 01:46:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 01:46:34,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:34,175 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:34,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 01:46:34,175 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:34,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 866283093, now seen corresponding path program 1 times [2024-11-22 01:46:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:34,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879092318] [2024-11-22 01:46:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879092318] [2024-11-22 01:46:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879092318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417989096] [2024-11-22 01:46:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:34,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:34,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:34,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:34,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:46:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:34,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:46:34,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:34,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417989096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:34,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-22 01:46:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113446545] [2024-11-22 01:46:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:34,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:46:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:46:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:34,609 INFO L87 Difference]: Start difference. First operand 552 states and 886 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:34,664 INFO L93 Difference]: Finished difference Result 1561 states and 2567 transitions. [2024-11-22 01:46:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:46:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-11-22 01:46:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:34,671 INFO L225 Difference]: With dead ends: 1561 [2024-11-22 01:46:34,671 INFO L226 Difference]: Without dead ends: 1054 [2024-11-22 01:46:34,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:46:34,674 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 827 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:34,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2451 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-11-22 01:46:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1034. [2024-11-22 01:46:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 797 states have (on average 1.644918444165621) internal successors, (1311), 829 states have internal predecessors, (1311), 190 states have call successors, (190), 46 states have call predecessors, (190), 46 states have return successors, (191), 184 states have call predecessors, (191), 185 states have call successors, (191) [2024-11-22 01:46:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1692 transitions. [2024-11-22 01:46:34,704 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1692 transitions. Word has length 118 [2024-11-22 01:46:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:34,704 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1692 transitions. [2024-11-22 01:46:34,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:46:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1692 transitions. [2024-11-22 01:46:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 01:46:34,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:34,707 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:34,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:46:34,911 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,SelfDestructingSolverStorable15 [2024-11-22 01:46:34,913 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:34,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1505456169, now seen corresponding path program 1 times [2024-11-22 01:46:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487548536] [2024-11-22 01:46:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:35,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487548536] [2024-11-22 01:46:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487548536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752908766] [2024-11-22 01:46:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:35,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:35,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:35,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:35,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:46:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:35,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:46:35,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:35,481 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752908766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:35,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:35,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-22 01:46:35,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567228317] [2024-11-22 01:46:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:35,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:46:35,483 INFO L87 Difference]: Start difference. First operand 1034 states and 1692 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:35,931 INFO L93 Difference]: Finished difference Result 2039 states and 3405 transitions. [2024-11-22 01:46:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-11-22 01:46:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:35,938 INFO L225 Difference]: With dead ends: 2039 [2024-11-22 01:46:35,938 INFO L226 Difference]: Without dead ends: 1050 [2024-11-22 01:46:35,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:35,943 INFO L432 NwaCegarLoop]: 868 mSDtfsCounter, 842 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:35,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2212 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:46:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-22 01:46:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2024-11-22 01:46:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 811 states have (on average 1.6461159062885327) internal successors, (1335), 843 states have internal predecessors, (1335), 190 states have call successors, (190), 48 states have call predecessors, (190), 48 states have return successors, (193), 184 states have call predecessors, (193), 185 states have call successors, (193) [2024-11-22 01:46:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1718 transitions. [2024-11-22 01:46:35,974 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1718 transitions. Word has length 118 [2024-11-22 01:46:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:35,974 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1718 transitions. [2024-11-22 01:46:35,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1718 transitions. [2024-11-22 01:46:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 01:46:35,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:35,977 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:35,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:46:36,178 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,SelfDestructingSolverStorable16 [2024-11-22 01:46:36,179 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:36,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2124814631, now seen corresponding path program 1 times [2024-11-22 01:46:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294870145] [2024-11-22 01:46:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:36,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:36,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294870145] [2024-11-22 01:46:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294870145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:36,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594803132] [2024-11-22 01:46:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:36,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:36,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:36,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:46:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:36,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:46:36,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:36,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:36,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594803132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:36,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:36,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-22 01:46:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686191185] [2024-11-22 01:46:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:36,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:36,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:46:36,673 INFO L87 Difference]: Start difference. First operand 1050 states and 1718 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:37,195 INFO L93 Difference]: Finished difference Result 2071 states and 3451 transitions. [2024-11-22 01:46:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:37,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2024-11-22 01:46:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:37,202 INFO L225 Difference]: With dead ends: 2071 [2024-11-22 01:46:37,202 INFO L226 Difference]: Without dead ends: 1066 [2024-11-22 01:46:37,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:37,206 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 833 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:37,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2209 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 01:46:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-11-22 01:46:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2024-11-22 01:46:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 825 states have (on average 1.6472727272727272) internal successors, (1359), 857 states have internal predecessors, (1359), 190 states have call successors, (190), 50 states have call predecessors, (190), 50 states have return successors, (195), 184 states have call predecessors, (195), 185 states have call successors, (195) [2024-11-22 01:46:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1744 transitions. [2024-11-22 01:46:37,239 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1744 transitions. Word has length 120 [2024-11-22 01:46:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:37,240 INFO L471 AbstractCegarLoop]: Abstraction has 1066 states and 1744 transitions. [2024-11-22 01:46:37,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1744 transitions. [2024-11-22 01:46:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 01:46:37,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:37,243 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:37,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:46:37,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 01:46:37,446 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:37,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 821451159, now seen corresponding path program 1 times [2024-11-22 01:46:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:37,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766395496] [2024-11-22 01:46:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:37,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766395496] [2024-11-22 01:46:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766395496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299170297] [2024-11-22 01:46:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:37,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:37,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:46:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:37,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:46:37,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:37,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299170297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-22 01:46:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165467261] [2024-11-22 01:46:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:37,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:46:37,890 INFO L87 Difference]: Start difference. First operand 1066 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:38,320 INFO L93 Difference]: Finished difference Result 2103 states and 3497 transitions. [2024-11-22 01:46:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:38,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2024-11-22 01:46:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:38,327 INFO L225 Difference]: With dead ends: 2103 [2024-11-22 01:46:38,328 INFO L226 Difference]: Without dead ends: 1082 [2024-11-22 01:46:38,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:38,332 INFO L432 NwaCegarLoop]: 862 mSDtfsCounter, 837 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:38,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2206 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:46:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-11-22 01:46:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2024-11-22 01:46:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 839 states have (on average 1.6483909415971394) internal successors, (1383), 871 states have internal predecessors, (1383), 190 states have call successors, (190), 52 states have call predecessors, (190), 52 states have return successors, (197), 184 states have call predecessors, (197), 185 states have call successors, (197) [2024-11-22 01:46:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1770 transitions. [2024-11-22 01:46:38,360 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1770 transitions. Word has length 122 [2024-11-22 01:46:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:38,361 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1770 transitions. [2024-11-22 01:46:38,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1770 transitions. [2024-11-22 01:46:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 01:46:38,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:38,363 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:38,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:46:38,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:38,564 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:38,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 396234335, now seen corresponding path program 1 times [2024-11-22 01:46:38,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:38,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530615192] [2024-11-22 01:46:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:38,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530615192] [2024-11-22 01:46:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530615192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621750340] [2024-11-22 01:46:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:38,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:38,686 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) [2024-11-22 01:46:38,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:46:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:38,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:46:38,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:46:39,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621750340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:39,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-22 01:46:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989792628] [2024-11-22 01:46:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:39,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:46:39,060 INFO L87 Difference]: Start difference. First operand 1082 states and 1770 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:39,482 INFO L93 Difference]: Finished difference Result 2135 states and 3543 transitions. [2024-11-22 01:46:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:46:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2024-11-22 01:46:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:39,489 INFO L225 Difference]: With dead ends: 2135 [2024-11-22 01:46:39,490 INFO L226 Difference]: Without dead ends: 1098 [2024-11-22 01:46:39,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:46:39,495 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 831 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:39,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 2203 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:46:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-22 01:46:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2024-11-22 01:46:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 853 states have (on average 1.64947245017585) internal successors, (1407), 885 states have internal predecessors, (1407), 190 states have call successors, (190), 54 states have call predecessors, (190), 54 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-22 01:46:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1796 transitions. [2024-11-22 01:46:39,531 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1796 transitions. Word has length 124 [2024-11-22 01:46:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:39,532 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1796 transitions. [2024-11-22 01:46:39,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-22 01:46:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1796 transitions. [2024-11-22 01:46:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-22 01:46:39,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:39,535 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:39,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 01:46:39,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:39,735 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:39,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash -570908329, now seen corresponding path program 1 times [2024-11-22 01:46:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181758579] [2024-11-22 01:46:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:46:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181758579] [2024-11-22 01:46:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181758579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924340660] [2024-11-22 01:46:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:40,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:40,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:40,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:40,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:46:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:40,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:46:40,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:46:40,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924340660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-22 01:46:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821695217] [2024-11-22 01:46:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:40,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:40,539 INFO L87 Difference]: Start difference. First operand 1098 states and 1796 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 01:46:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:41,060 INFO L93 Difference]: Finished difference Result 1179 states and 1922 transitions. [2024-11-22 01:46:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:46:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2024-11-22 01:46:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:41,071 INFO L225 Difference]: With dead ends: 1179 [2024-11-22 01:46:41,071 INFO L226 Difference]: Without dead ends: 1164 [2024-11-22 01:46:41,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:41,073 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 821 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:41,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1591 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 01:46:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-22 01:46:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1104. [2024-11-22 01:46:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 859 states have (on average 1.6449359720605354) internal successors, (1413), 891 states have internal predecessors, (1413), 190 states have call successors, (190), 54 states have call predecessors, (190), 54 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-22 01:46:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1802 transitions. [2024-11-22 01:46:41,116 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1802 transitions. Word has length 126 [2024-11-22 01:46:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:41,116 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1802 transitions. [2024-11-22 01:46:41,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 01:46:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1802 transitions. [2024-11-22 01:46:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-22 01:46:41,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:41,119 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:41,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 01:46:41,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:41,320 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:41,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1856031378, now seen corresponding path program 1 times [2024-11-22 01:46:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973033722] [2024-11-22 01:46:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:46:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973033722] [2024-11-22 01:46:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973033722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358734509] [2024-11-22 01:46:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:41,572 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:41,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:46:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:41,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:46:41,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:46:41,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358734509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-22 01:46:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359985420] [2024-11-22 01:46:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:41,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:46:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:46:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:41,847 INFO L87 Difference]: Start difference. First operand 1104 states and 1802 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-22 01:46:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:41,875 INFO L93 Difference]: Finished difference Result 1119 states and 1820 transitions. [2024-11-22 01:46:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:46:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 132 [2024-11-22 01:46:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:41,881 INFO L225 Difference]: With dead ends: 1119 [2024-11-22 01:46:41,882 INFO L226 Difference]: Without dead ends: 1104 [2024-11-22 01:46:41,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:41,884 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 0 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:41,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:46:41,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2024-11-22 01:46:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2024-11-22 01:46:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 859 states have (on average 1.6426076833527357) internal successors, (1411), 891 states have internal predecessors, (1411), 190 states have call successors, (190), 54 states have call predecessors, (190), 54 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-22 01:46:41,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1800 transitions. [2024-11-22 01:46:41,916 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1800 transitions. Word has length 132 [2024-11-22 01:46:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1800 transitions. [2024-11-22 01:46:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-22 01:46:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1800 transitions. [2024-11-22 01:46:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 01:46:41,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:41,920 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:41,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 01:46:42,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:42,125 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:42,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash 576604054, now seen corresponding path program 1 times [2024-11-22 01:46:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:42,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640755027] [2024-11-22 01:46:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:46:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640755027] [2024-11-22 01:46:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640755027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414192690] [2024-11-22 01:46:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:42,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:42,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:42,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:42,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:46:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:42,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 01:46:42,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 01:46:42,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414192690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-22 01:46:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164811219] [2024-11-22 01:46:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:42,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:46:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:46:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-22 01:46:42,937 INFO L87 Difference]: Start difference. First operand 1104 states and 1800 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-22 01:46:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:46,129 INFO L93 Difference]: Finished difference Result 2299 states and 3780 transitions. [2024-11-22 01:46:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 01:46:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2024-11-22 01:46:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:46,138 INFO L225 Difference]: With dead ends: 2299 [2024-11-22 01:46:46,139 INFO L226 Difference]: Without dead ends: 1240 [2024-11-22 01:46:46,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-22 01:46:46,144 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 2115 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 4707 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 5201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 4707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:46,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 1858 Invalid, 5201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 4707 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-22 01:46:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-22 01:46:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1190. [2024-11-22 01:46:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 923 states have (on average 1.6316359696641387) internal successors, (1506), 959 states have internal predecessors, (1506), 206 states have call successors, (206), 56 states have call predecessors, (206), 60 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2024-11-22 01:46:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1935 transitions. [2024-11-22 01:46:46,237 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1935 transitions. Word has length 143 [2024-11-22 01:46:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:46,237 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1935 transitions. [2024-11-22 01:46:46,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-22 01:46:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1935 transitions. [2024-11-22 01:46:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 01:46:46,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:46,242 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:46,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 01:46:46,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 01:46:46,462 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:46,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -149456154, now seen corresponding path program 1 times [2024-11-22 01:46:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707669172] [2024-11-22 01:46:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:46:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:46,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707669172] [2024-11-22 01:46:46,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707669172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:46,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672155860] [2024-11-22 01:46:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:46,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:46,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:46,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:46:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:47,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:46:47,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:46:47,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672155860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:47,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:46:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158536703] [2024-11-22 01:46:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:47,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:46:47,253 INFO L87 Difference]: Start difference. First operand 1190 states and 1935 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:49,256 INFO L93 Difference]: Finished difference Result 3749 states and 6220 transitions. [2024-11-22 01:46:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:46:49,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2024-11-22 01:46:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:49,277 INFO L225 Difference]: With dead ends: 3749 [2024-11-22 01:46:49,277 INFO L226 Difference]: Without dead ends: 2604 [2024-11-22 01:46:49,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:49,286 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 1952 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:49,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 920 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 01:46:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2024-11-22 01:46:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2490. [2024-11-22 01:46:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 1902 states have (on average 1.6361724500525763) internal successors, (3112), 1984 states have internal predecessors, (3112), 464 states have call successors, (464), 107 states have call predecessors, (464), 123 states have return successors, (550), 460 states have call predecessors, (550), 459 states have call successors, (550) [2024-11-22 01:46:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4126 transitions. [2024-11-22 01:46:49,431 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4126 transitions. Word has length 148 [2024-11-22 01:46:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:49,432 INFO L471 AbstractCegarLoop]: Abstraction has 2490 states and 4126 transitions. [2024-11-22 01:46:49,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:49,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4126 transitions. [2024-11-22 01:46:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 01:46:49,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:49,440 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:49,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 01:46:49,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-22 01:46:49,641 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:49,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -338323042, now seen corresponding path program 1 times [2024-11-22 01:46:49,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:49,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753930728] [2024-11-22 01:46:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:46:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753930728] [2024-11-22 01:46:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753930728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992870870] [2024-11-22 01:46:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:49,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:49,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:49,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 01:46:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:50,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:46:50,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:46:50,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:50,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992870870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:50,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:50,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:46:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110799760] [2024-11-22 01:46:50,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:50,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:46:50,412 INFO L87 Difference]: Start difference. First operand 2490 states and 4126 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:52,146 INFO L93 Difference]: Finished difference Result 8081 states and 13706 transitions. [2024-11-22 01:46:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:46:52,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2024-11-22 01:46:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:52,203 INFO L225 Difference]: With dead ends: 8081 [2024-11-22 01:46:52,203 INFO L226 Difference]: Without dead ends: 5636 [2024-11-22 01:46:52,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:52,225 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 1959 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:52,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 880 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 01:46:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2024-11-22 01:46:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 5393. [2024-11-22 01:46:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 4041 states have (on average 1.6327641672853255) internal successors, (6598), 4237 states have internal predecessors, (6598), 1094 states have call successors, (1094), 209 states have call predecessors, (1094), 257 states have return successors, (1444), 1098 states have call predecessors, (1444), 1089 states have call successors, (1444) [2024-11-22 01:46:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 9136 transitions. [2024-11-22 01:46:52,538 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 9136 transitions. Word has length 149 [2024-11-22 01:46:52,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:52,538 INFO L471 AbstractCegarLoop]: Abstraction has 5393 states and 9136 transitions. [2024-11-22 01:46:52,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 9136 transitions. [2024-11-22 01:46:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 01:46:52,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:52,543 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:52,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 01:46:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-22 01:46:52,747 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:52,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1898225368, now seen corresponding path program 1 times [2024-11-22 01:46:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136952678] [2024-11-22 01:46:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:46:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136952678] [2024-11-22 01:46:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136952678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831039763] [2024-11-22 01:46:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:53,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:53,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:53,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:53,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 01:46:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:53,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:46:53,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:46:53,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831039763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:53,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:46:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107680308] [2024-11-22 01:46:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:53,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:46:53,414 INFO L87 Difference]: Start difference. First operand 5393 states and 9136 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:46:55,738 INFO L93 Difference]: Finished difference Result 17896 states and 31355 transitions. [2024-11-22 01:46:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:46:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-22 01:46:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:46:55,835 INFO L225 Difference]: With dead ends: 17896 [2024-11-22 01:46:55,835 INFO L226 Difference]: Without dead ends: 12548 [2024-11-22 01:46:55,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:46:55,866 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 1947 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 01:46:55,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 874 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 01:46:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12548 states. [2024-11-22 01:46:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12548 to 12046. [2024-11-22 01:46:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12046 states, 8826 states have (on average 1.6242918649444822) internal successors, (14336), 9308 states have internal predecessors, (14336), 2674 states have call successors, (2674), 413 states have call predecessors, (2674), 545 states have return successors, (4010), 2706 states have call predecessors, (4010), 2669 states have call successors, (4010) [2024-11-22 01:46:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12046 states to 12046 states and 21020 transitions. [2024-11-22 01:46:56,514 INFO L78 Accepts]: Start accepts. Automaton has 12046 states and 21020 transitions. Word has length 150 [2024-11-22 01:46:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:46:56,514 INFO L471 AbstractCegarLoop]: Abstraction has 12046 states and 21020 transitions. [2024-11-22 01:46:56,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:46:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 12046 states and 21020 transitions. [2024-11-22 01:46:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-22 01:46:56,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:46:56,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:46:56,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 01:46:56,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-22 01:46:56,726 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:46:56,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:46:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1284413984, now seen corresponding path program 1 times [2024-11-22 01:46:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:46:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919114272] [2024-11-22 01:46:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:46:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:46:57,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:46:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919114272] [2024-11-22 01:46:57,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919114272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:46:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341116353] [2024-11-22 01:46:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:46:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:46:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:46:57,100 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:46:57,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 01:46:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:46:57,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:46:57,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:46:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:46:57,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:46:57,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341116353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:46:57,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:46:57,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:46:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322271694] [2024-11-22 01:46:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:46:57,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:46:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:46:57,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:46:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:46:57,531 INFO L87 Difference]: Start difference. First operand 12046 states and 21020 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:47:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:47:00,833 INFO L93 Difference]: Finished difference Result 40693 states and 74930 transitions. [2024-11-22 01:47:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:47:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2024-11-22 01:47:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:47:01,012 INFO L225 Difference]: With dead ends: 40693 [2024-11-22 01:47:01,013 INFO L226 Difference]: Without dead ends: 28692 [2024-11-22 01:47:01,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:47:01,070 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 1935 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 01:47:01,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 871 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 01:47:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28692 states. [2024-11-22 01:47:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28692 to 27727. [2024-11-22 01:47:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27727 states, 19827 states have (on average 1.6124476723659655) internal successors, (31970), 21035 states have internal predecessors, (31970), 6726 states have call successors, (6726), 821 states have call predecessors, (6726), 1173 states have return successors, (11720), 6850 states have call predecessors, (11720), 6721 states have call successors, (11720) [2024-11-22 01:47:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 50416 transitions. [2024-11-22 01:47:03,003 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 50416 transitions. Word has length 151 [2024-11-22 01:47:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:47:03,004 INFO L471 AbstractCegarLoop]: Abstraction has 27727 states and 50416 transitions. [2024-11-22 01:47:03,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:47:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 50416 transitions. [2024-11-22 01:47:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 01:47:03,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:47:03,009 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:47:03,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 01:47:03,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 01:47:03,213 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:47:03,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:47:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1161989994, now seen corresponding path program 1 times [2024-11-22 01:47:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:47:03,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135685097] [2024-11-22 01:47:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:47:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:47:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:47:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135685097] [2024-11-22 01:47:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135685097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:47:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611915094] [2024-11-22 01:47:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:03,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:47:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:47:03,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:47:03,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 01:47:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:03,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:47:03,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:47:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 01:47:04,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:47:04,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611915094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:47:04,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:47:04,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:47:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632427903] [2024-11-22 01:47:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:47:04,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:47:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:47:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:47:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:47:04,086 INFO L87 Difference]: Start difference. First operand 27727 states and 50416 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:47:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:47:10,641 INFO L93 Difference]: Finished difference Result 94976 states and 188856 transitions. [2024-11-22 01:47:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:47:10,641 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2024-11-22 01:47:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:47:11,586 INFO L225 Difference]: With dead ends: 94976 [2024-11-22 01:47:11,587 INFO L226 Difference]: Without dead ends: 67284 [2024-11-22 01:47:11,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:47:11,784 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1910 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:47:11,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 965 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 01:47:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67284 states. [2024-11-22 01:47:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67284 to 65732. [2024-11-22 01:47:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65732 states, 45867 states have (on average 1.598425883532823) internal successors, (73315), 48937 states have internal predecessors, (73315), 17298 states have call successors, (17298), 1635 states have call predecessors, (17298), 2566 states have return successors, (36009), 17713 states have call predecessors, (36009), 17293 states have call successors, (36009) [2024-11-22 01:47:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65732 states to 65732 states and 126622 transitions. [2024-11-22 01:47:18,002 INFO L78 Accepts]: Start accepts. Automaton has 65732 states and 126622 transitions. Word has length 152 [2024-11-22 01:47:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:47:18,003 INFO L471 AbstractCegarLoop]: Abstraction has 65732 states and 126622 transitions. [2024-11-22 01:47:18,003 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:47:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 65732 states and 126622 transitions. [2024-11-22 01:47:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-22 01:47:18,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:47:18,030 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:47:18,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 01:47:18,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 01:47:18,236 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:47:18,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:47:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1223995622, now seen corresponding path program 1 times [2024-11-22 01:47:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:47:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332065274] [2024-11-22 01:47:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:47:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 01:47:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:47:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332065274] [2024-11-22 01:47:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332065274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:47:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619053254] [2024-11-22 01:47:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:47:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:47:18,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:47:18,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 01:47:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:19,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:47:19,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:47:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:47:19,188 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:47:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619053254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:47:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:47:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:47:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805731935] [2024-11-22 01:47:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:47:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:47:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:47:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:47:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:47:19,190 INFO L87 Difference]: Start difference. First operand 65732 states and 126622 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-22 01:47:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:47:25,100 INFO L93 Difference]: Finished difference Result 134298 states and 268519 transitions. [2024-11-22 01:47:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:47:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 207 [2024-11-22 01:47:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:47:26,185 INFO L225 Difference]: With dead ends: 134298 [2024-11-22 01:47:26,186 INFO L226 Difference]: Without dead ends: 68612 [2024-11-22 01:47:26,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:47:26,624 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 144 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:47:26,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2449 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:47:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68612 states. [2024-11-22 01:47:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68612 to 68228. [2024-11-22 01:47:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68228 states, 48299 states have (on average 1.6146711112031304) internal successors, (77987), 51369 states have internal predecessors, (77987), 17298 states have call successors, (17298), 1699 states have call predecessors, (17298), 2630 states have return successors, (36009), 17713 states have call predecessors, (36009), 17293 states have call successors, (36009) [2024-11-22 01:47:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68228 states to 68228 states and 131294 transitions. [2024-11-22 01:47:32,524 INFO L78 Accepts]: Start accepts. Automaton has 68228 states and 131294 transitions. Word has length 207 [2024-11-22 01:47:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:47:32,525 INFO L471 AbstractCegarLoop]: Abstraction has 68228 states and 131294 transitions. [2024-11-22 01:47:32,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-22 01:47:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 68228 states and 131294 transitions. [2024-11-22 01:47:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-22 01:47:32,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:47:32,544 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:47:32,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 01:47:32,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:47:32,745 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:47:32,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:47:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 26392280, now seen corresponding path program 1 times [2024-11-22 01:47:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:47:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490312445] [2024-11-22 01:47:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:47:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-22 01:47:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:47:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490312445] [2024-11-22 01:47:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490312445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:47:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922532179] [2024-11-22 01:47:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:47:33,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:47:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:47:33,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:47:33,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 01:47:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:47:33,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:47:33,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:47:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-22 01:47:33,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:47:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-22 01:47:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922532179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:47:35,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:47:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2024-11-22 01:47:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256173190] [2024-11-22 01:47:35,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:47:35,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 01:47:35,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:47:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 01:47:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-22 01:47:35,294 INFO L87 Difference]: Start difference. First operand 68228 states and 131294 transitions. Second operand has 25 states, 25 states have (on average 17.08) internal successors, (427), 23 states have internal predecessors, (427), 14 states have call successors, (92), 8 states have call predecessors, (92), 15 states have return successors, (94), 18 states have call predecessors, (94), 13 states have call successors, (94)