./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product31.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 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:00:11,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:00:11,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:00:11,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:00:11,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:00:11,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:00:11,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:00:11,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:00:11,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:00:11,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:00:11,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:00:11,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:00:11,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:00:11,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:00:11,863 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:00:11,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:00:11,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:00:11,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:00:11,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:00:11,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:00:11,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:00:11,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:00:11,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:00:11,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:00:11,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:00:11,871 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:00:11,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:00:11,871 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:00:11,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:00:11,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:00:11,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:00:11,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:00:11,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:00:11,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:00:11,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:00:11,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:00:11,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:00:11,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:00:11,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:00:11,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:00:11,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:00:11,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:00:11,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04ae9a4eaad9b026cab167b9d875c53fcb305c3c3f2af8aa4a0b048c8b5ef4cb [2024-11-18 14:00:12,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:00:12,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:00:12,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:00:12,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:00:12,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:00:12,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2024-11-18 14:00:13,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:00:14,075 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:00:14,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product31.cil.c [2024-11-18 14:00:14,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f86864b2/a476764d68a34a1f89cb32b7bd35f574/FLAG809ca678f [2024-11-18 14:00:14,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f86864b2/a476764d68a34a1f89cb32b7bd35f574 [2024-11-18 14:00:14,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:00:14,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:00:14,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:00:14,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:00:14,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:00:14,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:00:14" (1/1) ... [2024-11-18 14:00:14,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55765a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:14, skipping insertion in model container [2024-11-18 14:00:14,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:00:14" (1/1) ... [2024-11-18 14:00:14,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:00:14,516 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_spec1_product31.cil.c[11232,11245] [2024-11-18 14:00:14,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:00:14,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:00:14,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-18 14:00:14,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2024-11-18 14:00:14,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [423] [2024-11-18 14:00:14,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2054] [2024-11-18 14:00:14,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2148] [2024-11-18 14:00:14,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2164] [2024-11-18 14:00:14,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2282] [2024-11-18 14:00:14,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2463] [2024-11-18 14:00:14,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2816] [2024-11-18 14:00:14,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3481] [2024-11-18 14:00:14,881 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_spec1_product31.cil.c[11232,11245] [2024-11-18 14:00:14,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:00:15,024 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:00:15,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15 WrapperNode [2024-11-18 14:00:15,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:00:15,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:00:15,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:00:15,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:00:15,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,107 INFO L138 Inliner]: procedures = 97, calls = 350, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 954 [2024-11-18 14:00:15,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:00:15,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:00:15,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:00:15,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:00:15,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,171 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:00:15,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:00:15,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:00:15,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:00:15,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:00:15,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (1/1) ... [2024-11-18 14:00:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:00:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:15,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:00:15,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:00:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 14:00:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 14:00:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:00:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:00:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:00:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:00:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 14:00:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 14:00:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:00:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:00:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:00:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:00:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:00:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:00:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:00:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:00:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:00:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:00:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:00:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:00:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:00:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:00:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-18 14:00:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-18 14:00:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:00:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 14:00:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 14:00:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:00:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:00:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 14:00:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 14:00:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:00:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:00:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:00:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:00:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 14:00:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 14:00:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:00:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:00:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:00:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:00:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:00:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:00:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:00:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:00:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:00:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:00:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:00:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:00:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:00:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:00:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:00:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:00:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:00:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:00:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:00:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:00:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:00:15,371 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:00:15,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:00:15,571 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:00:15,574 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:00:16,917 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-11-18 14:00:16,918 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:00:16,961 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:00:16,965 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:00:16,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:00:16 BoogieIcfgContainer [2024-11-18 14:00:16,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:00:16,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:00:16,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:00:16,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:00:16,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:00:14" (1/3) ... [2024-11-18 14:00:16,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1ceb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:00:16, skipping insertion in model container [2024-11-18 14:00:16,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:00:15" (2/3) ... [2024-11-18 14:00:16,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1ceb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:00:16, skipping insertion in model container [2024-11-18 14:00:16,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:00:16" (3/3) ... [2024-11-18 14:00:16,976 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.c [2024-11-18 14:00:16,996 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:00:16,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:00:17,100 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:00:17,110 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;@2db83579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:00:17,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:00:17,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 469 states have (on average 1.67590618336887) internal successors, (786), 490 states have internal predecessors, (786), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-18 14:00:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:00:17,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:17,154 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:17,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:17,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 953168523, now seen corresponding path program 1 times [2024-11-18 14:00:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653981484] [2024-11-18 14:00:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653981484] [2024-11-18 14:00:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653981484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650605142] [2024-11-18 14:00:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:17,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:17,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:17,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:00:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:18,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:00:18,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:18,436 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650605142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:18,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-18 14:00:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377152917] [2024-11-18 14:00:18,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:18,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:00:18,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:00:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:00:18,485 INFO L87 Difference]: Start difference. First operand has 603 states, 469 states have (on average 1.67590618336887) internal successors, (786), 490 states have internal predecessors, (786), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:00:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:18,570 INFO L93 Difference]: Finished difference Result 624 states and 1026 transitions. [2024-11-18 14:00:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:00:18,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-18 14:00:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:18,601 INFO L225 Difference]: With dead ends: 624 [2024-11-18 14:00:18,602 INFO L226 Difference]: Without dead ends: 595 [2024-11-18 14:00:18,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:00:18,609 INFO L432 NwaCegarLoop]: 987 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:18,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-18 14:00:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-18 14:00:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.673866090712743) internal successors, (775), 482 states have internal predecessors, (775), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2024-11-18 14:00:18,722 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 127 [2024-11-18 14:00:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:18,725 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2024-11-18 14:00:18,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:00:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2024-11-18 14:00:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 14:00:18,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:18,739 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:18,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:00:18,940 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,SelfDestructingSolverStorable0 [2024-11-18 14:00:18,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:18,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1919451231, now seen corresponding path program 1 times [2024-11-18 14:00:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:18,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568220813] [2024-11-18 14:00:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:18,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568220813] [2024-11-18 14:00:19,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568220813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:19,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595786085] [2024-11-18 14:00:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:19,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:19,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:19,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:19,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:00:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:19,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:19,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:19,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595786085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065599303] [2024-11-18 14:00:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:19,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:19,768 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:19,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:19,865 INFO L93 Difference]: Finished difference Result 1181 states and 1952 transitions. [2024-11-18 14:00:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:19,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-18 14:00:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:19,876 INFO L225 Difference]: With dead ends: 1181 [2024-11-18 14:00:19,877 INFO L226 Difference]: Without dead ends: 595 [2024-11-18 14:00:19,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:19,893 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 5 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:19,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2898 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-18 14:00:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-18 14:00:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6717062634989202) internal successors, (774), 482 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 979 transitions. [2024-11-18 14:00:19,949 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 979 transitions. Word has length 129 [2024-11-18 14:00:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:19,950 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 979 transitions. [2024-11-18 14:00:19,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 979 transitions. [2024-11-18 14:00:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:00:19,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:19,957 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:19,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:00:20,157 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,SelfDestructingSolverStorable1 [2024-11-18 14:00:20,158 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:20,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:20,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1051469961, now seen corresponding path program 1 times [2024-11-18 14:00:20,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:20,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3702836] [2024-11-18 14:00:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:20,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:20,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3702836] [2024-11-18 14:00:20,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3702836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11885429] [2024-11-18 14:00:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:20,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:20,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:20,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:00:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:20,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:20,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:20,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11885429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:20,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830313519] [2024-11-18 14:00:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:20,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:20,774 INFO L87 Difference]: Start difference. First operand 595 states and 979 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:20,868 INFO L93 Difference]: Finished difference Result 1181 states and 1950 transitions. [2024-11-18 14:00:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-11-18 14:00:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:20,877 INFO L225 Difference]: With dead ends: 1181 [2024-11-18 14:00:20,877 INFO L226 Difference]: Without dead ends: 595 [2024-11-18 14:00:20,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:20,883 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 4 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:20,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2898 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:20,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-18 14:00:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-18 14:00:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6695464362850971) internal successors, (773), 482 states have internal predecessors, (773), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 978 transitions. [2024-11-18 14:00:20,912 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 978 transitions. Word has length 131 [2024-11-18 14:00:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:20,915 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 978 transitions. [2024-11-18 14:00:20,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 978 transitions. [2024-11-18 14:00:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:00:20,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:20,922 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:20,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:00:21,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:21,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:21,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 957772319, now seen corresponding path program 1 times [2024-11-18 14:00:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391224246] [2024-11-18 14:00:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:21,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:21,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391224246] [2024-11-18 14:00:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391224246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436829221] [2024-11-18 14:00:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:21,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:21,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:21,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:21,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:00:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:21,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:21,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:21,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436829221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246265049] [2024-11-18 14:00:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:21,695 INFO L87 Difference]: Start difference. First operand 595 states and 978 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:21,795 INFO L93 Difference]: Finished difference Result 1188 states and 1957 transitions. [2024-11-18 14:00:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-11-18 14:00:21,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:21,801 INFO L225 Difference]: With dead ends: 1188 [2024-11-18 14:00:21,802 INFO L226 Difference]: Without dead ends: 604 [2024-11-18 14:00:21,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:21,806 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 13 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:21,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2895 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-18 14:00:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-18 14:00:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 490 states have internal predecessors, (785), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 990 transitions. [2024-11-18 14:00:21,844 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 990 transitions. Word has length 133 [2024-11-18 14:00:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:21,844 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 990 transitions. [2024-11-18 14:00:21,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 990 transitions. [2024-11-18 14:00:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:00:21,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:21,848 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:21,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:22,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:22,049 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:22,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1893294337, now seen corresponding path program 1 times [2024-11-18 14:00:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899591869] [2024-11-18 14:00:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899591869] [2024-11-18 14:00:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899591869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359006209] [2024-11-18 14:00:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:22,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:22,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:22,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:22,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:00:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:22,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:22,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:22,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359006209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475440533] [2024-11-18 14:00:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:22,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:22,596 INFO L87 Difference]: Start difference. First operand 604 states and 990 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:22,674 INFO L93 Difference]: Finished difference Result 1190 states and 1958 transitions. [2024-11-18 14:00:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:22,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-18 14:00:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:22,681 INFO L225 Difference]: With dead ends: 1190 [2024-11-18 14:00:22,681 INFO L226 Difference]: Without dead ends: 604 [2024-11-18 14:00:22,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:22,706 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 11 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:22,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2895 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-18 14:00:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-18 14:00:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.664543524416136) internal successors, (784), 490 states have internal predecessors, (784), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 989 transitions. [2024-11-18 14:00:22,739 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 989 transitions. Word has length 134 [2024-11-18 14:00:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:22,739 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 989 transitions. [2024-11-18 14:00:22,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 989 transitions. [2024-11-18 14:00:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:00:22,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:22,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:22,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:00:22,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:22,946 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:22,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:22,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1648575267, now seen corresponding path program 1 times [2024-11-18 14:00:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817144143] [2024-11-18 14:00:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817144143] [2024-11-18 14:00:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817144143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189775208] [2024-11-18 14:00:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:23,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:23,132 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) [2024-11-18 14:00:23,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:00:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:23,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:23,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:23,502 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189775208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792462871] [2024-11-18 14:00:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:23,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:23,505 INFO L87 Difference]: Start difference. First operand 604 states and 989 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:23,575 INFO L93 Difference]: Finished difference Result 1190 states and 1957 transitions. [2024-11-18 14:00:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-11-18 14:00:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:23,581 INFO L225 Difference]: With dead ends: 1190 [2024-11-18 14:00:23,581 INFO L226 Difference]: Without dead ends: 604 [2024-11-18 14:00:23,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:23,585 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 10 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:23,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2895 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-18 14:00:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-18 14:00:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6624203821656052) internal successors, (783), 490 states have internal predecessors, (783), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 988 transitions. [2024-11-18 14:00:23,609 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 988 transitions. Word has length 135 [2024-11-18 14:00:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:23,610 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 988 transitions. [2024-11-18 14:00:23,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 988 transitions. [2024-11-18 14:00:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 14:00:23,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:23,614 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:23,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:00:23,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:23,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:23,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1508006019, now seen corresponding path program 1 times [2024-11-18 14:00:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:23,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066753242] [2024-11-18 14:00:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:23,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066753242] [2024-11-18 14:00:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066753242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213657922] [2024-11-18 14:00:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:24,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:24,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:24,095 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) [2024-11-18 14:00:24,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:00:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:24,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:24,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:00:24,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:24,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213657922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:24,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:24,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 14:00:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914039037] [2024-11-18 14:00:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:24,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:24,480 INFO L87 Difference]: Start difference. First operand 604 states and 988 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:24,616 INFO L93 Difference]: Finished difference Result 1216 states and 2004 transitions. [2024-11-18 14:00:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-11-18 14:00:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:24,622 INFO L225 Difference]: With dead ends: 1216 [2024-11-18 14:00:24,622 INFO L226 Difference]: Without dead ends: 619 [2024-11-18 14:00:24,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:24,625 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 76 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:24,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2786 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:24,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-18 14:00:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 604. [2024-11-18 14:00:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6518046709129512) internal successors, (778), 490 states have internal predecessors, (778), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:24,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 983 transitions. [2024-11-18 14:00:24,645 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 983 transitions. Word has length 136 [2024-11-18 14:00:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:24,646 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 983 transitions. [2024-11-18 14:00:24,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 983 transitions. [2024-11-18 14:00:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 14:00:24,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:24,650 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:24,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:24,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:24,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:24,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1186299491, now seen corresponding path program 1 times [2024-11-18 14:00:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679914141] [2024-11-18 14:00:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679914141] [2024-11-18 14:00:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679914141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615610653] [2024-11-18 14:00:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:25,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:25,120 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) [2024-11-18 14:00:25,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:00:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:25,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:25,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:00:25,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615610653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 14:00:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703776406] [2024-11-18 14:00:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:25,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:25,512 INFO L87 Difference]: Start difference. First operand 604 states and 983 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:25,640 INFO L93 Difference]: Finished difference Result 1216 states and 1994 transitions. [2024-11-18 14:00:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2024-11-18 14:00:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:25,647 INFO L225 Difference]: With dead ends: 1216 [2024-11-18 14:00:25,648 INFO L226 Difference]: Without dead ends: 619 [2024-11-18 14:00:25,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:25,652 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 75 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:25,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2786 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-18 14:00:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 604. [2024-11-18 14:00:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 471 states have (on average 1.6411889596602973) internal successors, (773), 490 states have internal predecessors, (773), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 978 transitions. [2024-11-18 14:00:25,673 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 978 transitions. Word has length 138 [2024-11-18 14:00:25,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:25,673 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 978 transitions. [2024-11-18 14:00:25,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 978 transitions. [2024-11-18 14:00:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 14:00:25,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:25,703 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:25,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:25,903 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,SelfDestructingSolverStorable7 [2024-11-18 14:00:25,904 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:25,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1781935453, now seen corresponding path program 1 times [2024-11-18 14:00:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128012179] [2024-11-18 14:00:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128012179] [2024-11-18 14:00:26,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128012179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560355862] [2024-11-18 14:00:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:26,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:26,175 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) [2024-11-18 14:00:26,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:00:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:26,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:26,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:00:26,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:26,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560355862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:26,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:26,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 14:00:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612261984] [2024-11-18 14:00:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:26,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:26,592 INFO L87 Difference]: Start difference. First operand 604 states and 978 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:26,793 INFO L93 Difference]: Finished difference Result 1267 states and 2067 transitions. [2024-11-18 14:00:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2024-11-18 14:00:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:26,800 INFO L225 Difference]: With dead ends: 1267 [2024-11-18 14:00:26,800 INFO L226 Difference]: Without dead ends: 685 [2024-11-18 14:00:26,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:26,806 INFO L432 NwaCegarLoop]: 975 mSDtfsCounter, 130 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:26,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2817 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-18 14:00:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 655. [2024-11-18 14:00:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 521 states have (on average 1.6468330134357005) internal successors, (858), 540 states have internal predecessors, (858), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1063 transitions. [2024-11-18 14:00:26,835 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1063 transitions. Word has length 140 [2024-11-18 14:00:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:26,837 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1063 transitions. [2024-11-18 14:00:26,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1063 transitions. [2024-11-18 14:00:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:00:26,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:26,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:26,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:00:27,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:27,043 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:27,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -704308656, now seen corresponding path program 1 times [2024-11-18 14:00:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24009169] [2024-11-18 14:00:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24009169] [2024-11-18 14:00:27,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24009169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564620429] [2024-11-18 14:00:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:27,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:27,391 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) [2024-11-18 14:00:27,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:00:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:27,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:27,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:00:27,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564620429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:27,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:27,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 14:00:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440732193] [2024-11-18 14:00:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:27,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:27,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:27,764 INFO L87 Difference]: Start difference. First operand 655 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:27,943 INFO L93 Difference]: Finished difference Result 1282 states and 2091 transitions. [2024-11-18 14:00:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:27,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-18 14:00:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:27,950 INFO L225 Difference]: With dead ends: 1282 [2024-11-18 14:00:27,950 INFO L226 Difference]: Without dead ends: 685 [2024-11-18 14:00:27,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:27,953 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 124 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:27,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2790 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-18 14:00:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 655. [2024-11-18 14:00:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 521 states have (on average 1.637236084452975) internal successors, (853), 540 states have internal predecessors, (853), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 14:00:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1058 transitions. [2024-11-18 14:00:28,017 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1058 transitions. Word has length 141 [2024-11-18 14:00:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1058 transitions. [2024-11-18 14:00:28,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1058 transitions. [2024-11-18 14:00:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:00:28,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:28,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:28,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:00:28,223 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,SelfDestructingSolverStorable9 [2024-11-18 14:00:28,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:28,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash 421752975, now seen corresponding path program 1 times [2024-11-18 14:00:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897163464] [2024-11-18 14:00:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897163464] [2024-11-18 14:00:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897163464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814092924] [2024-11-18 14:00:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:28,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:28,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:28,390 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) [2024-11-18 14:00:28,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:00:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:28,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:00:28,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:00:28,836 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814092924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:28,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 14:00:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307298460] [2024-11-18 14:00:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:28,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:00:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:00:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:00:28,838 INFO L87 Difference]: Start difference. First operand 655 states and 1058 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:28,993 INFO L93 Difference]: Finished difference Result 1275 states and 2071 transitions. [2024-11-18 14:00:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:00:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-18 14:00:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:29,000 INFO L225 Difference]: With dead ends: 1275 [2024-11-18 14:00:29,001 INFO L226 Difference]: Without dead ends: 693 [2024-11-18 14:00:29,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:00:29,005 INFO L432 NwaCegarLoop]: 948 mSDtfsCounter, 113 mSDsluCounter, 5599 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6547 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:29,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6547 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-18 14:00:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 674. [2024-11-18 14:00:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 537 states have (on average 1.6368715083798884) internal successors, (879), 558 states have internal predecessors, (879), 106 states have call successors, (106), 29 states have call predecessors, (106), 30 states have return successors, (103), 99 states have call predecessors, (103), 101 states have call successors, (103) [2024-11-18 14:00:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1088 transitions. [2024-11-18 14:00:29,031 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1088 transitions. Word has length 141 [2024-11-18 14:00:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:29,032 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1088 transitions. [2024-11-18 14:00:29,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1088 transitions. [2024-11-18 14:00:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:00:29,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:29,037 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:29,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:29,237 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,SelfDestructingSolverStorable10 [2024-11-18 14:00:29,238 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:29,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 895271918, now seen corresponding path program 1 times [2024-11-18 14:00:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605668470] [2024-11-18 14:00:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:29,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:29,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605668470] [2024-11-18 14:00:29,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605668470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:29,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853826352] [2024-11-18 14:00:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:29,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:29,363 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) [2024-11-18 14:00:29,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:00:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:29,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:00:29,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:29,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:29,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853826352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:29,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 14:00:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791977414] [2024-11-18 14:00:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:29,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:00:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:00:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:00:29,782 INFO L87 Difference]: Start difference. First operand 674 states and 1088 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:29,874 INFO L93 Difference]: Finished difference Result 1213 states and 1971 transitions. [2024-11-18 14:00:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:00:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-18 14:00:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:29,881 INFO L225 Difference]: With dead ends: 1213 [2024-11-18 14:00:29,881 INFO L226 Difference]: Without dead ends: 698 [2024-11-18 14:00:29,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:29,885 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 86 mSDsluCounter, 4726 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:29,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5687 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-18 14:00:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 693. [2024-11-18 14:00:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 553 states have (on average 1.6365280289330921) internal successors, (905), 576 states have internal predecessors, (905), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1118 transitions. [2024-11-18 14:00:29,912 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1118 transitions. Word has length 141 [2024-11-18 14:00:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:29,912 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1118 transitions. [2024-11-18 14:00:29,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1118 transitions. [2024-11-18 14:00:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 14:00:29,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:29,917 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:29,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:00:30,117 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,SelfDestructingSolverStorable11 [2024-11-18 14:00:30,118 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:30,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 368163626, now seen corresponding path program 1 times [2024-11-18 14:00:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142522983] [2024-11-18 14:00:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:30,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:30,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142522983] [2024-11-18 14:00:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142522983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:30,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850691760] [2024-11-18 14:00:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:30,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:30,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:30,236 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) [2024-11-18 14:00:30,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:00:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:30,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:00:30,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:30,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850691760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:30,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 14:00:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490016945] [2024-11-18 14:00:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:30,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:00:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:00:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:00:30,672 INFO L87 Difference]: Start difference. First operand 693 states and 1118 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:30,779 INFO L93 Difference]: Finished difference Result 1243 states and 2022 transitions. [2024-11-18 14:00:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:00:30,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-18 14:00:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:30,786 INFO L225 Difference]: With dead ends: 1243 [2024-11-18 14:00:30,787 INFO L226 Difference]: Without dead ends: 728 [2024-11-18 14:00:30,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:30,791 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 95 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5677 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:30,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5677 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-18 14:00:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 693. [2024-11-18 14:00:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 553 states have (on average 1.6365280289330921) internal successors, (905), 576 states have internal predecessors, (905), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1118 transitions. [2024-11-18 14:00:30,818 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1118 transitions. Word has length 142 [2024-11-18 14:00:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:30,818 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1118 transitions. [2024-11-18 14:00:30,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1118 transitions. [2024-11-18 14:00:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 14:00:30,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:30,823 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:30,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:31,023 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,SelfDestructingSolverStorable12 [2024-11-18 14:00:31,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:31,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:31,024 INFO L85 PathProgramCache]: Analyzing trace with hash -892323926, now seen corresponding path program 1 times [2024-11-18 14:00:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:31,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222342812] [2024-11-18 14:00:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:31,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222342812] [2024-11-18 14:00:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222342812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292316707] [2024-11-18 14:00:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:31,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:31,138 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) [2024-11-18 14:00:31,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:00:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:31,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:00:31,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:31,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:31,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292316707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:31,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:31,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 14:00:31,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198136961] [2024-11-18 14:00:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:31,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:00:31,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:00:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:31,562 INFO L87 Difference]: Start difference. First operand 693 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:31,701 INFO L93 Difference]: Finished difference Result 1228 states and 1996 transitions. [2024-11-18 14:00:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:00:31,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-18 14:00:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:31,707 INFO L225 Difference]: With dead ends: 1228 [2024-11-18 14:00:31,708 INFO L226 Difference]: Without dead ends: 713 [2024-11-18 14:00:31,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:31,711 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 113 mSDsluCounter, 5605 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:31,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6555 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-18 14:00:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 693. [2024-11-18 14:00:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 553 states have (on average 1.6365280289330921) internal successors, (905), 576 states have internal predecessors, (905), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1118 transitions. [2024-11-18 14:00:31,735 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1118 transitions. Word has length 142 [2024-11-18 14:00:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:31,735 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1118 transitions. [2024-11-18 14:00:31,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1118 transitions. [2024-11-18 14:00:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 14:00:31,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:31,740 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:31,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:00:31,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:31,941 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:31,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1810876124, now seen corresponding path program 1 times [2024-11-18 14:00:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699702697] [2024-11-18 14:00:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:32,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:32,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699702697] [2024-11-18 14:00:32,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699702697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:32,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646243137] [2024-11-18 14:00:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:32,073 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) [2024-11-18 14:00:32,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:00:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:32,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:32,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:00:32,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646243137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:32,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:32,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735617760] [2024-11-18 14:00:32,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:32,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:32,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:32,503 INFO L87 Difference]: Start difference. First operand 693 states and 1118 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:32,565 INFO L93 Difference]: Finished difference Result 1280 states and 2081 transitions. [2024-11-18 14:00:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:32,566 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-18 14:00:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:32,571 INFO L225 Difference]: With dead ends: 1280 [2024-11-18 14:00:32,572 INFO L226 Difference]: Without dead ends: 693 [2024-11-18 14:00:32,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:32,576 INFO L432 NwaCegarLoop]: 956 mSDtfsCounter, 13 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:32,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2864 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-18 14:00:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2024-11-18 14:00:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 553 states have (on average 1.6292947558770343) internal successors, (901), 576 states have internal predecessors, (901), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1114 transitions. [2024-11-18 14:00:32,598 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1114 transitions. Word has length 142 [2024-11-18 14:00:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:32,599 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1114 transitions. [2024-11-18 14:00:32,599 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1114 transitions. [2024-11-18 14:00:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:00:32,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:32,604 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:32,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:00:32,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:00:32,805 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:32,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1259334010, now seen corresponding path program 1 times [2024-11-18 14:00:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343723508] [2024-11-18 14:00:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:32,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343723508] [2024-11-18 14:00:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343723508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322251845] [2024-11-18 14:00:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:32,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:00:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:33,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:00:33,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:00:33,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322251845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:33,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:33,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 14:00:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271791325] [2024-11-18 14:00:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:33,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:33,323 INFO L87 Difference]: Start difference. First operand 693 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:33,380 INFO L93 Difference]: Finished difference Result 1324 states and 2149 transitions. [2024-11-18 14:00:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:33,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2024-11-18 14:00:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:33,385 INFO L225 Difference]: With dead ends: 1324 [2024-11-18 14:00:33,385 INFO L226 Difference]: Without dead ends: 717 [2024-11-18 14:00:33,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:00:33,388 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 7 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:33,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2837 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-18 14:00:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2024-11-18 14:00:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 577 states have (on average 1.610051993067591) internal successors, (929), 600 states have internal predecessors, (929), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1142 transitions. [2024-11-18 14:00:33,413 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1142 transitions. Word has length 143 [2024-11-18 14:00:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:33,413 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1142 transitions. [2024-11-18 14:00:33,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:00:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1142 transitions. [2024-11-18 14:00:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:00:33,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:33,418 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:33,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:33,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 14:00:33,619 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:33,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1393282976, now seen corresponding path program 1 times [2024-11-18 14:00:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:33,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368130381] [2024-11-18 14:00:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:33,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368130381] [2024-11-18 14:00:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368130381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574685676] [2024-11-18 14:00:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:33,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:33,765 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:33,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:00:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:34,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:00:34,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:00:34,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574685676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:34,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:34,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 14:00:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199701816] [2024-11-18 14:00:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:34,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:00:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:00:34,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:34,170 INFO L87 Difference]: Start difference. First operand 717 states and 1142 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:34,310 INFO L93 Difference]: Finished difference Result 1258 states and 2028 transitions. [2024-11-18 14:00:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:00:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 144 [2024-11-18 14:00:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:34,316 INFO L225 Difference]: With dead ends: 1258 [2024-11-18 14:00:34,317 INFO L226 Difference]: Without dead ends: 743 [2024-11-18 14:00:34,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:34,320 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 119 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6511 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:34,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6511 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-18 14:00:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 717. [2024-11-18 14:00:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 577 states have (on average 1.610051993067591) internal successors, (929), 600 states have internal predecessors, (929), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-18 14:00:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1142 transitions. [2024-11-18 14:00:34,344 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1142 transitions. Word has length 144 [2024-11-18 14:00:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:34,344 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1142 transitions. [2024-11-18 14:00:34,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:00:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1142 transitions. [2024-11-18 14:00:34,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:00:34,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:34,349 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:34,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:00:34,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:00:34,550 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:34,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1630383415, now seen corresponding path program 1 times [2024-11-18 14:00:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:34,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588143408] [2024-11-18 14:00:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:00:34,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588143408] [2024-11-18 14:00:34,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588143408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996427009] [2024-11-18 14:00:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:34,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:34,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:34,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:00:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:35,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:35,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:35,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996427009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:35,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 14:00:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766128178] [2024-11-18 14:00:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:35,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:35,134 INFO L87 Difference]: Start difference. First operand 717 states and 1142 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:35,689 INFO L93 Difference]: Finished difference Result 1235 states and 2018 transitions. [2024-11-18 14:00:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:00:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-11-18 14:00:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:35,695 INFO L225 Difference]: With dead ends: 1235 [2024-11-18 14:00:35,696 INFO L226 Difference]: Without dead ends: 725 [2024-11-18 14:00:35,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:35,699 INFO L432 NwaCegarLoop]: 948 mSDtfsCounter, 914 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:35,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2440 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:00:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-18 14:00:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2024-11-18 14:00:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 584 states have (on average 1.6113013698630136) internal successors, (941), 607 states have internal predecessors, (941), 107 states have call successors, (107), 30 states have call predecessors, (107), 33 states have return successors, (107), 100 states have call predecessors, (107), 102 states have call successors, (107) [2024-11-18 14:00:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1155 transitions. [2024-11-18 14:00:35,726 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1155 transitions. Word has length 144 [2024-11-18 14:00:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:35,726 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 1155 transitions. [2024-11-18 14:00:35,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1155 transitions. [2024-11-18 14:00:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:00:35,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:35,731 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:35,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:35,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:00:35,932 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:35,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1461284635, now seen corresponding path program 1 times [2024-11-18 14:00:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:35,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581247248] [2024-11-18 14:00:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:00:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581247248] [2024-11-18 14:00:36,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581247248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:36,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454589722] [2024-11-18 14:00:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:36,028 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:36,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:00:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:36,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:36,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:36,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454589722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:36,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 14:00:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136426616] [2024-11-18 14:00:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:36,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:36,497 INFO L87 Difference]: Start difference. First operand 725 states and 1155 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:37,031 INFO L93 Difference]: Finished difference Result 1251 states and 2041 transitions. [2024-11-18 14:00:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:00:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2024-11-18 14:00:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:37,041 INFO L225 Difference]: With dead ends: 1251 [2024-11-18 14:00:37,041 INFO L226 Difference]: Without dead ends: 733 [2024-11-18 14:00:37,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:37,044 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 912 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:37,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2437 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:00:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-18 14:00:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2024-11-18 14:00:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 591 states have (on average 1.6125211505922166) internal successors, (953), 614 states have internal predecessors, (953), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (108), 100 states have call predecessors, (108), 102 states have call successors, (108) [2024-11-18 14:00:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1168 transitions. [2024-11-18 14:00:37,068 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1168 transitions. Word has length 146 [2024-11-18 14:00:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:37,068 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1168 transitions. [2024-11-18 14:00:37,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1168 transitions. [2024-11-18 14:00:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 14:00:37,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:37,073 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:37,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:37,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:37,274 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:37,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1714915145, now seen corresponding path program 1 times [2024-11-18 14:00:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218763207] [2024-11-18 14:00:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:37,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218763207] [2024-11-18 14:00:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218763207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179321685] [2024-11-18 14:00:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:37,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:37,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:37,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:37,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 14:00:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:37,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:37,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:37,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179321685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:37,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 14:00:37,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49357900] [2024-11-18 14:00:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:37,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:37,876 INFO L87 Difference]: Start difference. First operand 733 states and 1168 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:38,317 INFO L93 Difference]: Finished difference Result 1267 states and 2064 transitions. [2024-11-18 14:00:38,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:00:38,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2024-11-18 14:00:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:38,322 INFO L225 Difference]: With dead ends: 1267 [2024-11-18 14:00:38,322 INFO L226 Difference]: Without dead ends: 741 [2024-11-18 14:00:38,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:38,325 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 906 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:38,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 2434 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:00:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-18 14:00:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2024-11-18 14:00:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 598 states have (on average 1.6137123745819397) internal successors, (965), 621 states have internal predecessors, (965), 107 states have call successors, (107), 32 states have call predecessors, (107), 35 states have return successors, (109), 100 states have call predecessors, (109), 102 states have call successors, (109) [2024-11-18 14:00:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1181 transitions. [2024-11-18 14:00:38,351 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1181 transitions. Word has length 148 [2024-11-18 14:00:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:38,352 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1181 transitions. [2024-11-18 14:00:38,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1181 transitions. [2024-11-18 14:00:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 14:00:38,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:38,357 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:38,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:38,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:38,558 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:38,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1473095955, now seen corresponding path program 1 times [2024-11-18 14:00:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465412659] [2024-11-18 14:00:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:00:38,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465412659] [2024-11-18 14:00:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465412659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705855204] [2024-11-18 14:00:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:38,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:38,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:38,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:38,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 14:00:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:39,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:39,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:39,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:39,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705855204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:39,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 14:00:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882903487] [2024-11-18 14:00:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:39,124 INFO L87 Difference]: Start difference. First operand 741 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:39,679 INFO L93 Difference]: Finished difference Result 1283 states and 2087 transitions. [2024-11-18 14:00:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:00:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2024-11-18 14:00:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:39,687 INFO L225 Difference]: With dead ends: 1283 [2024-11-18 14:00:39,688 INFO L226 Difference]: Without dead ends: 749 [2024-11-18 14:00:39,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:39,691 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 900 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:39,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 2431 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:00:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-18 14:00:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2024-11-18 14:00:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 605 states have (on average 1.6148760330578513) internal successors, (977), 628 states have internal predecessors, (977), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-18 14:00:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1194 transitions. [2024-11-18 14:00:39,726 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1194 transitions. Word has length 150 [2024-11-18 14:00:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:39,727 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1194 transitions. [2024-11-18 14:00:39,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 14:00:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1194 transitions. [2024-11-18 14:00:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:00:39,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:39,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:39,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:39,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:39,934 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:39,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 571638327, now seen corresponding path program 1 times [2024-11-18 14:00:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450679676] [2024-11-18 14:00:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:39,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:40,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:40,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450679676] [2024-11-18 14:00:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450679676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:40,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984577301] [2024-11-18 14:00:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:40,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:40,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:40,075 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:40,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 14:00:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:40,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:40,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:00:40,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984577301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:40,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 14:00:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096732734] [2024-11-18 14:00:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:40,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:40,583 INFO L87 Difference]: Start difference. First operand 749 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:00:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:40,898 INFO L93 Difference]: Finished difference Result 798 states and 1266 transitions. [2024-11-18 14:00:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:40,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 152 [2024-11-18 14:00:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:40,910 INFO L225 Difference]: With dead ends: 798 [2024-11-18 14:00:40,910 INFO L226 Difference]: Without dead ends: 783 [2024-11-18 14:00:40,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:40,913 INFO L432 NwaCegarLoop]: 956 mSDtfsCounter, 890 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:40,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1745 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:00:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-18 14:00:40,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 752. [2024-11-18 14:00:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 608 states have (on average 1.611842105263158) internal successors, (980), 631 states have internal predecessors, (980), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-18 14:00:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1197 transitions. [2024-11-18 14:00:40,953 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1197 transitions. Word has length 152 [2024-11-18 14:00:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:40,954 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1197 transitions. [2024-11-18 14:00:40,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-18 14:00:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1197 transitions. [2024-11-18 14:00:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 14:00:40,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:40,958 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:40,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 14:00:41,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:41,159 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:41,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1208811538, now seen corresponding path program 1 times [2024-11-18 14:00:41,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:41,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367585303] [2024-11-18 14:00:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367585303] [2024-11-18 14:00:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367585303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837887877] [2024-11-18 14:00:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:41,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:41,256 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 14:00:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:41,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:00:41,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:00:41,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:41,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837887877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:41,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:41,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-18 14:00:41,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14981215] [2024-11-18 14:00:41,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:41,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:41,652 INFO L87 Difference]: Start difference. First operand 752 states and 1197 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:00:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:41,678 INFO L93 Difference]: Finished difference Result 767 states and 1215 transitions. [2024-11-18 14:00:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:41,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 158 [2024-11-18 14:00:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:41,685 INFO L225 Difference]: With dead ends: 767 [2024-11-18 14:00:41,685 INFO L226 Difference]: Without dead ends: 752 [2024-11-18 14:00:41,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:41,686 INFO L432 NwaCegarLoop]: 963 mSDtfsCounter, 0 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3848 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 [2024-11-18 14:00:41,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3848 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-18 14:00:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2024-11-18 14:00:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 608 states have (on average 1.6101973684210527) internal successors, (979), 631 states have internal predecessors, (979), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-18 14:00:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1196 transitions. [2024-11-18 14:00:41,714 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1196 transitions. Word has length 158 [2024-11-18 14:00:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:41,716 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1196 transitions. [2024-11-18 14:00:41,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 14:00:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1196 transitions. [2024-11-18 14:00:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:00:41,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:41,721 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 14:00:41,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:41,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:41,922 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:41,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -883423181, now seen corresponding path program 1 times [2024-11-18 14:00:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491969942] [2024-11-18 14:00:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:00:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491969942] [2024-11-18 14:00:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491969942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75164147] [2024-11-18 14:00:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:42,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:42,042 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:42,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 14:00:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:42,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:00:42,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:00:42,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75164147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:42,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:42,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 14:00:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916270335] [2024-11-18 14:00:42,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:42,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:42,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:00:42,463 INFO L87 Difference]: Start difference. First operand 752 states and 1196 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:42,513 INFO L93 Difference]: Finished difference Result 1478 states and 2362 transitions. [2024-11-18 14:00:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2024-11-18 14:00:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:42,520 INFO L225 Difference]: With dead ends: 1478 [2024-11-18 14:00:42,520 INFO L226 Difference]: Without dead ends: 721 [2024-11-18 14:00:42,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:00:42,524 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 7 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:42,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2864 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-18 14:00:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-18 14:00:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 580 states have (on average 1.6086206896551725) internal successors, (933), 601 states have internal predecessors, (933), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-18 14:00:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1146 transitions. [2024-11-18 14:00:42,550 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1146 transitions. Word has length 169 [2024-11-18 14:00:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:42,551 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1146 transitions. [2024-11-18 14:00:42,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1146 transitions. [2024-11-18 14:00:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 14:00:42,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:42,555 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:42,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:42,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:42,756 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:42,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1003737438, now seen corresponding path program 1 times [2024-11-18 14:00:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168600590] [2024-11-18 14:00:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:00:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168600590] [2024-11-18 14:00:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168600590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753666899] [2024-11-18 14:00:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:42,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:42,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:42,940 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:42,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 14:00:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:43,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:00:43,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:43,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753666899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-18 14:00:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895493861] [2024-11-18 14:00:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:43,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:00:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:00:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:43,355 INFO L87 Difference]: Start difference. First operand 721 states and 1146 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:43,423 INFO L93 Difference]: Finished difference Result 1411 states and 2256 transitions. [2024-11-18 14:00:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:00:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 171 [2024-11-18 14:00:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:43,432 INFO L225 Difference]: With dead ends: 1411 [2024-11-18 14:00:43,432 INFO L226 Difference]: Without dead ends: 721 [2024-11-18 14:00:43,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:43,436 INFO L432 NwaCegarLoop]: 975 mSDtfsCounter, 119 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:43,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5724 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-18 14:00:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 700. [2024-11-18 14:00:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 559 states have (on average 1.6082289803220036) internal successors, (899), 580 states have internal predecessors, (899), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-18 14:00:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1112 transitions. [2024-11-18 14:00:43,463 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1112 transitions. Word has length 171 [2024-11-18 14:00:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:43,463 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1112 transitions. [2024-11-18 14:00:43,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1112 transitions. [2024-11-18 14:00:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 14:00:43,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:43,471 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:43,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:43,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 14:00:43,672 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:43,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -438623911, now seen corresponding path program 1 times [2024-11-18 14:00:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97936313] [2024-11-18 14:00:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97936313] [2024-11-18 14:00:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97936313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45170933] [2024-11-18 14:00:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:43,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:43,823 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:43,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 14:00:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:44,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:44,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:00:44,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:44,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45170933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:44,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 14:00:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368066607] [2024-11-18 14:00:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:44,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:44,226 INFO L87 Difference]: Start difference. First operand 700 states and 1112 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:44,326 INFO L93 Difference]: Finished difference Result 1393 states and 2226 transitions. [2024-11-18 14:00:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2024-11-18 14:00:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:44,336 INFO L225 Difference]: With dead ends: 1393 [2024-11-18 14:00:44,336 INFO L226 Difference]: Without dead ends: 724 [2024-11-18 14:00:44,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:00:44,339 INFO L432 NwaCegarLoop]: 940 mSDtfsCounter, 128 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:44,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2743 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-18 14:00:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 700. [2024-11-18 14:00:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 559 states have (on average 1.6064400715563507) internal successors, (898), 580 states have internal predecessors, (898), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-18 14:00:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1111 transitions. [2024-11-18 14:00:44,372 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1111 transitions. Word has length 173 [2024-11-18 14:00:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:44,372 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1111 transitions. [2024-11-18 14:00:44,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1111 transitions. [2024-11-18 14:00:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 14:00:44,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:44,376 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:44,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:44,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 14:00:44,577 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:44,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1148831082, now seen corresponding path program 1 times [2024-11-18 14:00:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164759289] [2024-11-18 14:00:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:44,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 14:00:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164759289] [2024-11-18 14:00:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164759289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:44,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:44,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:00:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321765100] [2024-11-18 14:00:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:44,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:00:44,686 INFO L87 Difference]: Start difference. First operand 700 states and 1111 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:44,729 INFO L93 Difference]: Finished difference Result 1328 states and 2135 transitions. [2024-11-18 14:00:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:44,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2024-11-18 14:00:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:44,736 INFO L225 Difference]: With dead ends: 1328 [2024-11-18 14:00:44,736 INFO L226 Difference]: Without dead ends: 660 [2024-11-18 14:00:44,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:00:44,771 INFO L432 NwaCegarLoop]: 955 mSDtfsCounter, 8 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:44,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2861 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-18 14:00:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2024-11-18 14:00:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 522 states have (on average 1.5996168582375478) internal successors, (835), 541 states have internal predecessors, (835), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-18 14:00:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1044 transitions. [2024-11-18 14:00:44,796 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1044 transitions. Word has length 174 [2024-11-18 14:00:44,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:44,796 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 1044 transitions. [2024-11-18 14:00:44,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:00:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1044 transitions. [2024-11-18 14:00:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 14:00:44,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:44,800 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:44,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:00:44,800 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:44,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1824234686, now seen corresponding path program 1 times [2024-11-18 14:00:44,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:44,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424118280] [2024-11-18 14:00:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:44,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:00:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424118280] [2024-11-18 14:00:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424118280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:00:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129068499] [2024-11-18 14:00:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:44,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:00:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:00:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:00:44,975 INFO L87 Difference]: Start difference. First operand 660 states and 1044 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:45,049 INFO L93 Difference]: Finished difference Result 1231 states and 1974 transitions. [2024-11-18 14:00:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:00:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2024-11-18 14:00:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:45,055 INFO L225 Difference]: With dead ends: 1231 [2024-11-18 14:00:45,055 INFO L226 Difference]: Without dead ends: 646 [2024-11-18 14:00:45,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:45,059 INFO L432 NwaCegarLoop]: 938 mSDtfsCounter, 88 mSDsluCounter, 4612 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5550 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:45,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5550 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-18 14:00:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2024-11-18 14:00:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 508 states have (on average 1.594488188976378) internal successors, (810), 527 states have internal predecessors, (810), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-18 14:00:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1019 transitions. [2024-11-18 14:00:45,082 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1019 transitions. Word has length 175 [2024-11-18 14:00:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:45,083 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1019 transitions. [2024-11-18 14:00:45,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1019 transitions. [2024-11-18 14:00:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 14:00:45,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:45,086 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 14:00:45,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 14:00:45,087 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:45,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 625392244, now seen corresponding path program 1 times [2024-11-18 14:00:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811994670] [2024-11-18 14:00:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811994670] [2024-11-18 14:00:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811994670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:45,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 14:00:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653833924] [2024-11-18 14:00:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:00:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:00:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:45,421 INFO L87 Difference]: Start difference. First operand 646 states and 1019 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:45,596 INFO L93 Difference]: Finished difference Result 1258 states and 2002 transitions. [2024-11-18 14:00:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:00:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 176 [2024-11-18 14:00:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:45,605 INFO L225 Difference]: With dead ends: 1258 [2024-11-18 14:00:45,605 INFO L226 Difference]: Without dead ends: 637 [2024-11-18 14:00:45,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:00:45,610 INFO L432 NwaCegarLoop]: 898 mSDtfsCounter, 45 mSDsluCounter, 7137 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:45,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 8035 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-18 14:00:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2024-11-18 14:00:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 499 states have (on average 1.593186372745491) internal successors, (795), 518 states have internal predecessors, (795), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-18 14:00:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1004 transitions. [2024-11-18 14:00:45,642 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1004 transitions. Word has length 176 [2024-11-18 14:00:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:45,642 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1004 transitions. [2024-11-18 14:00:45,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1004 transitions. [2024-11-18 14:00:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 14:00:45,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:45,647 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:45,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 14:00:45,647 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:45,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1887735275, now seen corresponding path program 1 times [2024-11-18 14:00:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:45,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544263105] [2024-11-18 14:00:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:00:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544263105] [2024-11-18 14:00:45,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544263105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:45,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 14:00:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46215931] [2024-11-18 14:00:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:45,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:00:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:00:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:45,970 INFO L87 Difference]: Start difference. First operand 637 states and 1004 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:46,100 INFO L93 Difference]: Finished difference Result 1190 states and 1908 transitions. [2024-11-18 14:00:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:00:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 177 [2024-11-18 14:00:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:46,107 INFO L225 Difference]: With dead ends: 1190 [2024-11-18 14:00:46,107 INFO L226 Difference]: Without dead ends: 631 [2024-11-18 14:00:46,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:46,110 INFO L432 NwaCegarLoop]: 907 mSDtfsCounter, 31 mSDsluCounter, 6305 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:46,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7212 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-18 14:00:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2024-11-18 14:00:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 493 states have (on average 1.5983772819472617) internal successors, (788), 512 states have internal predecessors, (788), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-18 14:00:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 997 transitions. [2024-11-18 14:00:46,132 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 997 transitions. Word has length 177 [2024-11-18 14:00:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:46,133 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 997 transitions. [2024-11-18 14:00:46,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:00:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 997 transitions. [2024-11-18 14:00:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 14:00:46,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:46,136 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:46,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 14:00:46,136 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:46,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash 497552407, now seen corresponding path program 1 times [2024-11-18 14:00:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:46,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780551731] [2024-11-18 14:00:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:00:46,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780551731] [2024-11-18 14:00:46,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780551731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970067682] [2024-11-18 14:00:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:46,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:46,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:46,544 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:46,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 14:00:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:46,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:00:46,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:00:47,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970067682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-18 14:00:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066611863] [2024-11-18 14:00:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:47,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:00:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:00:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:00:47,102 INFO L87 Difference]: Start difference. First operand 631 states and 997 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 14:00:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:49,565 INFO L93 Difference]: Finished difference Result 1905 states and 3106 transitions. [2024-11-18 14:00:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:00:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 177 [2024-11-18 14:00:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:49,576 INFO L225 Difference]: With dead ends: 1905 [2024-11-18 14:00:49,576 INFO L226 Difference]: Without dead ends: 1360 [2024-11-18 14:00:49,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:00:49,579 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 2224 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 4158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:49,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 2047 Invalid, 4158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:00:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-18 14:00:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1271. [2024-11-18 14:00:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 989 states have (on average 1.6208291203235592) internal successors, (1603), 1026 states have internal predecessors, (1603), 215 states have call successors, (215), 61 states have call predecessors, (215), 66 states have return successors, (241), 208 states have call predecessors, (241), 210 states have call successors, (241) [2024-11-18 14:00:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2059 transitions. [2024-11-18 14:00:49,630 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2059 transitions. Word has length 177 [2024-11-18 14:00:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:49,631 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 2059 transitions. [2024-11-18 14:00:49,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 14:00:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2059 transitions. [2024-11-18 14:00:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:00:49,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:49,635 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:49,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-18 14:00:49,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:49,836 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:49,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 894831572, now seen corresponding path program 1 times [2024-11-18 14:00:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:49,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476249843] [2024-11-18 14:00:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:00:50,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:50,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476249843] [2024-11-18 14:00:50,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476249843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:50,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203805620] [2024-11-18 14:00:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:50,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:50,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:50,219 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:50,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 14:00:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:50,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:00:50,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:00:50,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203805620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:50,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:50,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-18 14:00:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864013912] [2024-11-18 14:00:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:50,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:00:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:00:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:50,650 INFO L87 Difference]: Start difference. First operand 1271 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:00:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:50,778 INFO L93 Difference]: Finished difference Result 3019 states and 4968 transitions. [2024-11-18 14:00:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:00:50,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-18 14:00:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:50,794 INFO L225 Difference]: With dead ends: 3019 [2024-11-18 14:00:50,795 INFO L226 Difference]: Without dead ends: 1838 [2024-11-18 14:00:50,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:50,802 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 831 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2538 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 [2024-11-18 14:00:50,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2538 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-11-18 14:00:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1269. [2024-11-18 14:00:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 988 states have (on average 1.6204453441295548) internal successors, (1601), 1024 states have internal predecessors, (1601), 215 states have call successors, (215), 61 states have call predecessors, (215), 65 states have return successors, (235), 208 states have call predecessors, (235), 210 states have call successors, (235) [2024-11-18 14:00:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2051 transitions. [2024-11-18 14:00:50,876 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2051 transitions. Word has length 182 [2024-11-18 14:00:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:50,877 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2051 transitions. [2024-11-18 14:00:50,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:00:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2051 transitions. [2024-11-18 14:00:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:00:50,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:50,881 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:50,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-18 14:00:51,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:51,085 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:51,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1154556270, now seen corresponding path program 1 times [2024-11-18 14:00:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604923189] [2024-11-18 14:00:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:00:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604923189] [2024-11-18 14:00:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604923189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624530260] [2024-11-18 14:00:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:51,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:51,462 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:51,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 14:00:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:51,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 14:00:51,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:00:51,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624530260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:00:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273927942] [2024-11-18 14:00:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:51,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:51,934 INFO L87 Difference]: Start difference. First operand 1269 states and 2051 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:00:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:52,833 INFO L93 Difference]: Finished difference Result 2436 states and 3981 transitions. [2024-11-18 14:00:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 182 [2024-11-18 14:00:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:52,850 INFO L225 Difference]: With dead ends: 2436 [2024-11-18 14:00:52,851 INFO L226 Difference]: Without dead ends: 1253 [2024-11-18 14:00:52,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:00:52,858 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 1347 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:52,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 321 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:00:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2024-11-18 14:00:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1253. [2024-11-18 14:00:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 978 states have (on average 1.6155419222903886) internal successors, (1580), 1013 states have internal predecessors, (1580), 209 states have call successors, (209), 61 states have call predecessors, (209), 65 states have return successors, (230), 203 states have call predecessors, (230), 205 states have call successors, (230) [2024-11-18 14:00:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2019 transitions. [2024-11-18 14:00:52,933 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2019 transitions. Word has length 182 [2024-11-18 14:00:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:52,934 INFO L471 AbstractCegarLoop]: Abstraction has 1253 states and 2019 transitions. [2024-11-18 14:00:52,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:00:52,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2019 transitions. [2024-11-18 14:00:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 14:00:52,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:52,937 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:00:52,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:53,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:53,138 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:53,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1431627493, now seen corresponding path program 1 times [2024-11-18 14:00:53,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:53,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101592401] [2024-11-18 14:00:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:00:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101592401] [2024-11-18 14:00:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101592401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105232225] [2024-11-18 14:00:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:53,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:53,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:53,474 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:53,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 14:00:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:53,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:00:53,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-18 14:00:53,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:00:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 14:00:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105232225] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 14:00:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 15 [2024-11-18 14:00:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949801018] [2024-11-18 14:00:54,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:54,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:00:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:00:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:00:54,175 INFO L87 Difference]: Start difference. First operand 1253 states and 2019 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-18 14:00:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:54,243 INFO L93 Difference]: Finished difference Result 1273 states and 2043 transitions. [2024-11-18 14:00:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:54,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 183 [2024-11-18 14:00:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:54,252 INFO L225 Difference]: With dead ends: 1273 [2024-11-18 14:00:54,252 INFO L226 Difference]: Without dead ends: 1259 [2024-11-18 14:00:54,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:00:54,254 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 0 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:54,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3633 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2024-11-18 14:00:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1259. [2024-11-18 14:00:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 984 states have (on average 1.6117886178861789) internal successors, (1586), 1019 states have internal predecessors, (1586), 209 states have call successors, (209), 61 states have call predecessors, (209), 65 states have return successors, (230), 203 states have call predecessors, (230), 205 states have call successors, (230) [2024-11-18 14:00:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2025 transitions. [2024-11-18 14:00:54,316 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2025 transitions. Word has length 183 [2024-11-18 14:00:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:54,317 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 2025 transitions. [2024-11-18 14:00:54,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-18 14:00:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2025 transitions. [2024-11-18 14:00:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 14:00:54,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:54,322 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:00:54,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:54,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-18 14:00:54,523 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:54,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1576055468, now seen corresponding path program 1 times [2024-11-18 14:00:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899564956] [2024-11-18 14:00:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-18 14:00:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899564956] [2024-11-18 14:00:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899564956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357945258] [2024-11-18 14:00:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:55,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:55,113 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:55,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 14:00:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:55,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:55,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 14:00:55,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:00:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-18 14:00:56,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357945258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:00:56,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:00:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-18 14:00:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032731850] [2024-11-18 14:00:56,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:00:56,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:00:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:00:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:00:56,193 INFO L87 Difference]: Start difference. First operand 1259 states and 2025 transitions. Second operand has 14 states, 14 states have (on average 19.285714285714285) internal successors, (270), 12 states have internal predecessors, (270), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-18 14:01:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:05,530 INFO L93 Difference]: Finished difference Result 9088 states and 15278 transitions. [2024-11-18 14:01:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-18 14:01:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.285714285714285) internal successors, (270), 12 states have internal predecessors, (270), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 275 [2024-11-18 14:01:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:05,581 INFO L225 Difference]: With dead ends: 9088 [2024-11-18 14:01:05,582 INFO L226 Difference]: Without dead ends: 7915 [2024-11-18 14:01:05,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 568 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2024-11-18 14:01:05,605 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 6755 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 16292 mSolverCounterSat, 2220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6837 SdHoareTripleChecker+Valid, 7150 SdHoareTripleChecker+Invalid, 18512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2220 IncrementalHoareTripleChecker+Valid, 16292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:05,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6837 Valid, 7150 Invalid, 18512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2220 Valid, 16292 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-18 14:01:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2024-11-18 14:01:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 6771. [2024-11-18 14:01:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 5180 states have (on average 1.5853281853281853) internal successors, (8212), 5384 states have internal predecessors, (8212), 1181 states have call successors, (1181), 282 states have call predecessors, (1181), 409 states have return successors, (1736), 1196 states have call predecessors, (1736), 1177 states have call successors, (1736) [2024-11-18 14:01:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 11129 transitions. [2024-11-18 14:01:06,176 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 11129 transitions. Word has length 275 [2024-11-18 14:01:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:06,177 INFO L471 AbstractCegarLoop]: Abstraction has 6771 states and 11129 transitions. [2024-11-18 14:01:06,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.285714285714285) internal successors, (270), 12 states have internal predecessors, (270), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-18 14:01:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 11129 transitions. [2024-11-18 14:01:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 14:01:06,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:06,200 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:06,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-18 14:01:06,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:06,404 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:06,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1333605, now seen corresponding path program 1 times [2024-11-18 14:01:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372341845] [2024-11-18 14:01:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 14:01:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:06,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372341845] [2024-11-18 14:01:06,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372341845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:01:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819379640] [2024-11-18 14:01:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:06,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:01:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:01:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:01:06,653 INFO L87 Difference]: Start difference. First operand 6771 states and 11129 transitions. Second operand has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-18 14:01:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:07,161 INFO L93 Difference]: Finished difference Result 13465 states and 22166 transitions. [2024-11-18 14:01:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:01:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 277 [2024-11-18 14:01:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:07,212 INFO L225 Difference]: With dead ends: 13465 [2024-11-18 14:01:07,212 INFO L226 Difference]: Without dead ends: 6762 [2024-11-18 14:01:07,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:07,240 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 41 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6248 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:07,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6248 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-11-18 14:01:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-11-18 14:01:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 5173 states have (on average 1.5847670597332302) internal successors, (8198), 5376 states have internal predecessors, (8198), 1181 states have call successors, (1181), 282 states have call predecessors, (1181), 407 states have return successors, (1732), 1195 states have call predecessors, (1732), 1177 states have call successors, (1732) [2024-11-18 14:01:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 11111 transitions. [2024-11-18 14:01:07,628 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 11111 transitions. Word has length 277 [2024-11-18 14:01:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:07,629 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 11111 transitions. [2024-11-18 14:01:07,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-18 14:01:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 11111 transitions. [2024-11-18 14:01:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-18 14:01:07,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:07,651 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:01:07,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-18 14:01:07,651 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:07,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 157596095, now seen corresponding path program 1 times [2024-11-18 14:01:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309150928] [2024-11-18 14:01:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 14:01:07,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309150928] [2024-11-18 14:01:07,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309150928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649074089] [2024-11-18 14:01:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:07,947 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 14:01:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:08,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:01:08,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-18 14:01:08,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649074089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:08,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:08,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-18 14:01:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707616648] [2024-11-18 14:01:08,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:08,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:08,503 INFO L87 Difference]: Start difference. First operand 6762 states and 11111 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 14:01:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:08,683 INFO L93 Difference]: Finished difference Result 8834 states and 14469 transitions. [2024-11-18 14:01:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2024-11-18 14:01:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:08,701 INFO L225 Difference]: With dead ends: 8834 [2024-11-18 14:01:08,702 INFO L226 Difference]: Without dead ends: 2112 [2024-11-18 14:01:08,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:08,726 INFO L432 NwaCegarLoop]: 889 mSDtfsCounter, 3 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:08,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2660 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2024-11-18 14:01:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2112. [2024-11-18 14:01:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1642 states have (on average 1.584652862362972) internal successors, (2602), 1704 states have internal predecessors, (2602), 340 states have call successors, (340), 98 states have call predecessors, (340), 129 states have return successors, (458), 333 states have call predecessors, (458), 336 states have call successors, (458) [2024-11-18 14:01:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3400 transitions. [2024-11-18 14:01:08,851 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3400 transitions. Word has length 278 [2024-11-18 14:01:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:08,852 INFO L471 AbstractCegarLoop]: Abstraction has 2112 states and 3400 transitions. [2024-11-18 14:01:08,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 14:01:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3400 transitions. [2024-11-18 14:01:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-18 14:01:08,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:08,857 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:01:08,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-18 14:01:09,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:09,059 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:09,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 704439714, now seen corresponding path program 1 times [2024-11-18 14:01:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565419948] [2024-11-18 14:01:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-18 14:01:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565419948] [2024-11-18 14:01:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565419948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737881692] [2024-11-18 14:01:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:09,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:09,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:09,610 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:09,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 14:01:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:10,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 14:01:10,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 14:01:10,170 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737881692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:10,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:10,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-18 14:01:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685297224] [2024-11-18 14:01:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:10,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:10,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:01:10,173 INFO L87 Difference]: Start difference. First operand 2112 states and 3400 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:01:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:10,316 INFO L93 Difference]: Finished difference Result 4164 states and 6752 transitions. [2024-11-18 14:01:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:01:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 283 [2024-11-18 14:01:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:10,333 INFO L225 Difference]: With dead ends: 4164 [2024-11-18 14:01:10,333 INFO L226 Difference]: Without dead ends: 2136 [2024-11-18 14:01:10,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:01:10,341 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 0 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:10,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5413 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2024-11-18 14:01:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2130. [2024-11-18 14:01:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1656 states have (on average 1.5797101449275361) internal successors, (2616), 1720 states have internal predecessors, (2616), 340 states have call successors, (340), 98 states have call predecessors, (340), 133 states have return successors, (462), 335 states have call predecessors, (462), 336 states have call successors, (462) [2024-11-18 14:01:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3418 transitions. [2024-11-18 14:01:10,457 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3418 transitions. Word has length 283 [2024-11-18 14:01:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:10,458 INFO L471 AbstractCegarLoop]: Abstraction has 2130 states and 3418 transitions. [2024-11-18 14:01:10,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:01:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3418 transitions. [2024-11-18 14:01:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-18 14:01:10,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:10,463 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:01:10,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-18 14:01:10,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-18 14:01:10,664 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:10,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:10,665 INFO L85 PathProgramCache]: Analyzing trace with hash 830045644, now seen corresponding path program 1 times [2024-11-18 14:01:10,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:10,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218532421] [2024-11-18 14:01:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:10,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-18 14:01:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218532421] [2024-11-18 14:01:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218532421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668302702] [2024-11-18 14:01:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:10,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:10,837 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:10,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 14:01:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:11,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:01:11,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-18 14:01:11,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:01:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 14:01:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668302702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:01:12,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:01:12,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 24 [2024-11-18 14:01:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334719501] [2024-11-18 14:01:12,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:01:12,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:01:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:12,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:01:12,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:01:12,714 INFO L87 Difference]: Start difference. First operand 2130 states and 3418 transitions. Second operand has 24 states, 22 states have (on average 13.772727272727273) internal successors, (303), 22 states have internal predecessors, (303), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-18 14:01:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:26,925 INFO L93 Difference]: Finished difference Result 11472 states and 18829 transitions. [2024-11-18 14:01:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-18 14:01:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 13.772727272727273) internal successors, (303), 22 states have internal predecessors, (303), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) Word has length 289 [2024-11-18 14:01:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:26,974 INFO L225 Difference]: With dead ends: 11472 [2024-11-18 14:01:26,974 INFO L226 Difference]: Without dead ends: 8893 [2024-11-18 14:01:27,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 613 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6445 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2360, Invalid=16000, Unknown=0, NotChecked=0, Total=18360 [2024-11-18 14:01:27,002 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 20637 mSDsluCounter, 9536 mSDsCounter, 0 mSdLazyCounter, 21648 mSolverCounterSat, 6853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20672 SdHoareTripleChecker+Valid, 10360 SdHoareTripleChecker+Invalid, 28501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6853 IncrementalHoareTripleChecker+Valid, 21648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:27,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20672 Valid, 10360 Invalid, 28501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6853 Valid, 21648 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-18 14:01:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2024-11-18 14:01:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 8500. [2024-11-18 14:01:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8500 states, 6398 states have (on average 1.5457955611128478) internal successors, (9890), 6710 states have internal predecessors, (9890), 1539 states have call successors, (1539), 423 states have call predecessors, (1539), 562 states have return successors, (2141), 1558 states have call predecessors, (2141), 1535 states have call successors, (2141) [2024-11-18 14:01:27,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8500 states to 8500 states and 13570 transitions. [2024-11-18 14:01:27,745 INFO L78 Accepts]: Start accepts. Automaton has 8500 states and 13570 transitions. Word has length 289 [2024-11-18 14:01:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:27,745 INFO L471 AbstractCegarLoop]: Abstraction has 8500 states and 13570 transitions. [2024-11-18 14:01:27,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 13.772727272727273) internal successors, (303), 22 states have internal predecessors, (303), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-18 14:01:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 8500 states and 13570 transitions. [2024-11-18 14:01:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 14:01:27,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:27,751 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 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] [2024-11-18 14:01:27,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0