./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product19.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 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:44:06,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:44:06,217 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:44:06,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:44:06,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:44:06,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:44:06,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:44:06,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:44:06,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:44:06,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:44:06,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:44:06,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:44:06,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:44:06,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:44:06,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:44:06,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:44:06,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:44:06,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:44:06,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:44:06,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:44:06,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:44:06,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:44:06,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:44:06,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:44:06,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:44:06,249 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:44:06,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:44:06,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:44:06,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:44:06,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:44:06,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:44:06,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2024-11-22 01:44:06,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:44:06,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:44:06,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:44:06,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:44:06,471 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:44:06,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2024-11-22 01:44:07,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:44:07,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:44:07,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2024-11-22 01:44:07,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64781d8e9/ad852abbd032461d978d515100435364/FLAG9bc1c33fd [2024-11-22 01:44:08,232 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64781d8e9/ad852abbd032461d978d515100435364 [2024-11-22 01:44:08,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:44:08,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:44:08,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:44:08,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:44:08,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:44:08,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:08,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4689af11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08, skipping insertion in model container [2024-11-22 01:44:08,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:08,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:44:08,682 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_product19.cil.c[61467,61480] [2024-11-22 01:44:08,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:44:08,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:44:08,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-22 01:44:08,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [64] [2024-11-22 01:44:08,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [185] [2024-11-22 01:44:08,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [858] [2024-11-22 01:44:08,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1219] [2024-11-22 01:44:08,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1254] [2024-11-22 01:44:08,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1441] [2024-11-22 01:44:08,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2965] [2024-11-22 01:44:08,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2974] [2024-11-22 01:44:08,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3065] [2024-11-22 01:44:08,835 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_product19.cil.c[61467,61480] [2024-11-22 01:44:08,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:44:08,885 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:44:08,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08 WrapperNode [2024-11-22 01:44:08,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:44:08,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:44:08,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:44:08,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:44:08,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:08,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:08,983 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1107 [2024-11-22 01:44:08,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:44:08,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:44:08,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:44:08,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:44:08,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:08,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,035 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-22 01:44:09,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:44:09,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:44:09,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:44:09,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:44:09,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (1/1) ... [2024-11-22 01:44:09,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:44:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:09,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:44:09,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:44:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-22 01:44:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-22 01:44:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:44:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-22 01:44:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-22 01:44:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-22 01:44:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-22 01:44:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-22 01:44:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-22 01:44:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-22 01:44:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-22 01:44:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-22 01:44:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-22 01:44:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-22 01:44:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-22 01:44:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-22 01:44:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-22 01:44:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-22 01:44:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-22 01:44:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-22 01:44:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-22 01:44:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-22 01:44:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-22 01:44:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-22 01:44:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-22 01:44:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-22 01:44:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-22 01:44:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-22 01:44:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-22 01:44:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-22 01:44:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-22 01:44:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-22 01:44:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-22 01:44:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-22 01:44:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-22 01:44:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-22 01:44:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-22 01:44:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-22 01:44:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-22 01:44:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-22 01:44:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 01:44:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 01:44:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 01:44:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 01:44:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 01:44:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 01:44:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-22 01:44:09,259 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-22 01:44:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-22 01:44:09,259 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-22 01:44:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-22 01:44:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-22 01:44:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:44:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:44:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-22 01:44:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-22 01:44:09,474 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:44:09,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:44:10,522 INFO L? ?]: Removed 449 outVars from TransFormulas that were not future-live. [2024-11-22 01:44:10,522 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:44:10,544 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:44:10,544 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:44:10,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:10 BoogieIcfgContainer [2024-11-22 01:44:10,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:44:10,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:44:10,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:44:10,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:44:10,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:44:08" (1/3) ... [2024-11-22 01:44:10,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a0ed52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:10, skipping insertion in model container [2024-11-22 01:44:10,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:08" (2/3) ... [2024-11-22 01:44:10,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a0ed52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:10, skipping insertion in model container [2024-11-22 01:44:10,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:10" (3/3) ... [2024-11-22 01:44:10,555 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2024-11-22 01:44:10,569 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:44:10,569 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:44:10,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:44:10,639 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;@a193a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:44:10,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:44:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-22 01:44:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:44:10,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:10,670 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:10,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:10,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1483608375, now seen corresponding path program 1 times [2024-11-22 01:44:10,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:10,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784350954] [2024-11-22 01:44:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:11,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784350954] [2024-11-22 01:44:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784350954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715213997] [2024-11-22 01:44:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:11,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:11,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:11,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:11,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:44:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:11,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 01:44:11,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:11,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715213997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-22 01:44:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123024439] [2024-11-22 01:44:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:11,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:44:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:44:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:11,609 INFO L87 Difference]: Start difference. First operand has 567 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:44:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:11,664 INFO L93 Difference]: Finished difference Result 588 states and 971 transitions. [2024-11-22 01:44:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:44:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2024-11-22 01:44:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:11,683 INFO L225 Difference]: With dead ends: 588 [2024-11-22 01:44:11,683 INFO L226 Difference]: Without dead ends: 559 [2024-11-22 01:44:11,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:11,689 INFO L432 NwaCegarLoop]: 932 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, 932 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 [2024-11-22 01:44:11,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-22 01:44:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-11-22 01:44:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 454 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 925 transitions. [2024-11-22 01:44:11,758 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 925 transitions. Word has length 125 [2024-11-22 01:44:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:11,760 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 925 transitions. [2024-11-22 01:44:11,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:44:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 925 transitions. [2024-11-22 01:44:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-22 01:44:11,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:11,766 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:11,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:44:11,967 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 [2024-11-22 01:44:11,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:11,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1848803770, now seen corresponding path program 1 times [2024-11-22 01:44:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820944217] [2024-11-22 01:44:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:12,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:12,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820944217] [2024-11-22 01:44:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820944217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847366681] [2024-11-22 01:44:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:12,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:12,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:44:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:12,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:12,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:12,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:12,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847366681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:12,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:12,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901790048] [2024-11-22 01:44:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:12,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:12,636 INFO L87 Difference]: Start difference. First operand 559 states and 925 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:12,729 INFO L93 Difference]: Finished difference Result 1109 states and 1842 transitions. [2024-11-22 01:44:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:12,730 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2024-11-22 01:44:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:12,736 INFO L225 Difference]: With dead ends: 1109 [2024-11-22 01:44:12,736 INFO L226 Difference]: Without dead ends: 559 [2024-11-22 01:44:12,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:12,744 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 5 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2733 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 [2024-11-22 01:44:12,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2733 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-22 01:44:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-11-22 01:44:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6804597701149426) internal successors, (731), 454 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 924 transitions. [2024-11-22 01:44:12,775 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 924 transitions. Word has length 127 [2024-11-22 01:44:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:12,776 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 924 transitions. [2024-11-22 01:44:12,776 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 924 transitions. [2024-11-22 01:44:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 01:44:12,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:12,782 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:12,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 01:44:12,983 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 [2024-11-22 01:44:12,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:12,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -452485452, now seen corresponding path program 1 times [2024-11-22 01:44:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964431843] [2024-11-22 01:44:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964431843] [2024-11-22 01:44:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964431843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479648910] [2024-11-22 01:44:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:13,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:13,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:44:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:13,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:13,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:13,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479648910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:13,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488032479] [2024-11-22 01:44:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:13,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:13,520 INFO L87 Difference]: Start difference. First operand 559 states and 924 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:13,588 INFO L93 Difference]: Finished difference Result 1109 states and 1840 transitions. [2024-11-22 01:44:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:13,589 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2024-11-22 01:44:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:13,594 INFO L225 Difference]: With dead ends: 1109 [2024-11-22 01:44:13,595 INFO L226 Difference]: Without dead ends: 559 [2024-11-22 01:44:13,598 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 [2024-11-22 01:44:13,599 INFO L432 NwaCegarLoop]: 913 mSDtfsCounter, 4 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2733 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 [2024-11-22 01:44:13,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2733 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-22 01:44:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2024-11-22 01:44:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 435 states have (on average 1.6781609195402298) internal successors, (730), 454 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 923 transitions. [2024-11-22 01:44:13,621 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 923 transitions. Word has length 129 [2024-11-22 01:44:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:13,621 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 923 transitions. [2024-11-22 01:44:13,622 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 923 transitions. [2024-11-22 01:44:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 01:44:13,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:13,625 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:13,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:44:13,829 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 [2024-11-22 01:44:13,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:13,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1348267066, now seen corresponding path program 1 times [2024-11-22 01:44:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894907854] [2024-11-22 01:44:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:13,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:13,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894907854] [2024-11-22 01:44:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894907854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:13,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858831667] [2024-11-22 01:44:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:13,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:13,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:13,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:13,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:44:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:14,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:14,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:14,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:14,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858831667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:14,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:14,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:14,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558963324] [2024-11-22 01:44:14,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:14,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:14,458 INFO L87 Difference]: Start difference. First operand 559 states and 923 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:14,526 INFO L93 Difference]: Finished difference Result 1116 states and 1847 transitions. [2024-11-22 01:44:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:14,527 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2024-11-22 01:44:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:14,530 INFO L225 Difference]: With dead ends: 1116 [2024-11-22 01:44:14,530 INFO L226 Difference]: Without dead ends: 568 [2024-11-22 01:44:14,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:14,533 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 13 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2730 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 [2024-11-22 01:44:14,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2730 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-22 01:44:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-22 01:44:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.674943566591422) internal successors, (742), 462 states have internal predecessors, (742), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 935 transitions. [2024-11-22 01:44:14,549 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 935 transitions. Word has length 131 [2024-11-22 01:44:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:14,550 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 935 transitions. [2024-11-22 01:44:14,550 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 935 transitions. [2024-11-22 01:44:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-22 01:44:14,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:14,553 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:14,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:44:14,753 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 [2024-11-22 01:44:14,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:14,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1765631875, now seen corresponding path program 1 times [2024-11-22 01:44:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877442976] [2024-11-22 01:44:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877442976] [2024-11-22 01:44:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877442976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101339704] [2024-11-22 01:44:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:14,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:14,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:14,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:14,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:44:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:15,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:15,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:15,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:15,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101339704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:15,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:15,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630567443] [2024-11-22 01:44:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:15,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:15,240 INFO L87 Difference]: Start difference. First operand 568 states and 935 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:15,291 INFO L93 Difference]: Finished difference Result 1118 states and 1848 transitions. [2024-11-22 01:44:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-22 01:44:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:15,296 INFO L225 Difference]: With dead ends: 1118 [2024-11-22 01:44:15,296 INFO L226 Difference]: Without dead ends: 568 [2024-11-22 01:44:15,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:15,299 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 11 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2730 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 [2024-11-22 01:44:15,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2730 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-22 01:44:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-22 01:44:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.672686230248307) internal successors, (741), 462 states have internal predecessors, (741), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 934 transitions. [2024-11-22 01:44:15,315 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 934 transitions. Word has length 132 [2024-11-22 01:44:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:15,315 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 934 transitions. [2024-11-22 01:44:15,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 934 transitions. [2024-11-22 01:44:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-22 01:44:15,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:15,319 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:15,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:44:15,519 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 [2024-11-22 01:44:15,520 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:15,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash 363213162, now seen corresponding path program 1 times [2024-11-22 01:44:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136584067] [2024-11-22 01:44:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136584067] [2024-11-22 01:44:15,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136584067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573155781] [2024-11-22 01:44:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:15,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:15,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:15,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:44:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:15,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:15,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:15,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573155781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:15,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855000320] [2024-11-22 01:44:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:15,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:15,930 INFO L87 Difference]: Start difference. First operand 568 states and 934 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:15,982 INFO L93 Difference]: Finished difference Result 1118 states and 1847 transitions. [2024-11-22 01:44:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2024-11-22 01:44:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:16,001 INFO L225 Difference]: With dead ends: 1118 [2024-11-22 01:44:16,001 INFO L226 Difference]: Without dead ends: 568 [2024-11-22 01:44:16,003 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 [2024-11-22 01:44:16,007 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 10 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2730 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 [2024-11-22 01:44:16,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2730 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-22 01:44:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-22 01:44:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.670428893905192) internal successors, (740), 462 states have internal predecessors, (740), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 933 transitions. [2024-11-22 01:44:16,021 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 933 transitions. Word has length 133 [2024-11-22 01:44:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:16,021 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 933 transitions. [2024-11-22 01:44:16,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 933 transitions. [2024-11-22 01:44:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-22 01:44:16,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:16,024 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:16,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:16,224 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 [2024-11-22 01:44:16,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:16,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 688867943, now seen corresponding path program 1 times [2024-11-22 01:44:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:16,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630442125] [2024-11-22 01:44:16,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:16,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:16,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630442125] [2024-11-22 01:44:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630442125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412611324] [2024-11-22 01:44:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:16,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:16,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:16,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:44:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:16,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:16,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:16,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412611324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-22 01:44:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046675063] [2024-11-22 01:44:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:16,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:16,696 INFO L87 Difference]: Start difference. First operand 568 states and 933 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:16,819 INFO L93 Difference]: Finished difference Result 1144 states and 1894 transitions. [2024-11-22 01:44:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:16,820 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-11-22 01:44:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:16,825 INFO L225 Difference]: With dead ends: 1144 [2024-11-22 01:44:16,825 INFO L226 Difference]: Without dead ends: 583 [2024-11-22 01:44:16,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:16,827 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 76 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2621 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 [2024-11-22 01:44:16,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2621 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-22 01:44:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 568. [2024-11-22 01:44:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.6591422121896162) internal successors, (735), 462 states have internal predecessors, (735), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 928 transitions. [2024-11-22 01:44:16,843 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 928 transitions. Word has length 134 [2024-11-22 01:44:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:16,844 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 928 transitions. [2024-11-22 01:44:16,844 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 928 transitions. [2024-11-22 01:44:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-22 01:44:16,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:16,847 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:16,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 01:44:17,048 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 [2024-11-22 01:44:17,049 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -435662753, now seen corresponding path program 1 times [2024-11-22 01:44:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727319943] [2024-11-22 01:44:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727319943] [2024-11-22 01:44:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727319943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963693879] [2024-11-22 01:44:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:17,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:17,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:17,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:44:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:17,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:17,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:17,607 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963693879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:17,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:17,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-22 01:44:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37398416] [2024-11-22 01:44:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:17,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:17,609 INFO L87 Difference]: Start difference. First operand 568 states and 928 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:17,731 INFO L93 Difference]: Finished difference Result 1144 states and 1884 transitions. [2024-11-22 01:44:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:17,732 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-22 01:44:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:17,736 INFO L225 Difference]: With dead ends: 1144 [2024-11-22 01:44:17,736 INFO L226 Difference]: Without dead ends: 583 [2024-11-22 01:44:17,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:17,739 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 75 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2621 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 [2024-11-22 01:44:17,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2621 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-22 01:44:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 568. [2024-11-22 01:44:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 443 states have (on average 1.6478555304740405) internal successors, (730), 462 states have internal predecessors, (730), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 923 transitions. [2024-11-22 01:44:17,755 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 923 transitions. Word has length 136 [2024-11-22 01:44:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:17,756 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 923 transitions. [2024-11-22 01:44:17,756 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 923 transitions. [2024-11-22 01:44:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-22 01:44:17,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:17,759 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-22 01:44:17,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:17,960 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 [2024-11-22 01:44:17,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:17,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1510243769, now seen corresponding path program 1 times [2024-11-22 01:44:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673719051] [2024-11-22 01:44:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:18,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673719051] [2024-11-22 01:44:18,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673719051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731398579] [2024-11-22 01:44:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:18,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:18,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:44:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:18,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:18,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:18,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:18,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731398579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:18,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:18,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-22 01:44:18,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604799104] [2024-11-22 01:44:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:18,461 INFO L87 Difference]: Start difference. First operand 568 states and 923 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:18,618 INFO L93 Difference]: Finished difference Result 1195 states and 1957 transitions. [2024-11-22 01:44:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:18,618 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-11-22 01:44:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:18,622 INFO L225 Difference]: With dead ends: 1195 [2024-11-22 01:44:18,622 INFO L226 Difference]: Without dead ends: 649 [2024-11-22 01:44:18,624 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 [2024-11-22 01:44:18,625 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 130 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2652 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 [2024-11-22 01:44:18,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2652 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-22 01:44:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 619. [2024-11-22 01:44:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 493 states have (on average 1.6531440162271804) internal successors, (815), 512 states have internal predecessors, (815), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1008 transitions. [2024-11-22 01:44:18,640 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1008 transitions. Word has length 138 [2024-11-22 01:44:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:18,640 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 1008 transitions. [2024-11-22 01:44:18,640 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1008 transitions. [2024-11-22 01:44:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 01:44:18,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:18,643 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:18,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 01:44:18,843 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 [2024-11-22 01:44:18,844 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:18,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash -117520292, now seen corresponding path program 1 times [2024-11-22 01:44:18,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:18,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397306234] [2024-11-22 01:44:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:18,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397306234] [2024-11-22 01:44:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397306234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633201303] [2024-11-22 01:44:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:19,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:19,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:19,060 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:19,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 01:44:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:19,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:19,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:19,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633201303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-22 01:44:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834258275] [2024-11-22 01:44:19,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:19,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:19,408 INFO L87 Difference]: Start difference. First operand 619 states and 1008 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:19,597 INFO L93 Difference]: Finished difference Result 1210 states and 1981 transitions. [2024-11-22 01:44:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-11-22 01:44:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:19,603 INFO L225 Difference]: With dead ends: 1210 [2024-11-22 01:44:19,603 INFO L226 Difference]: Without dead ends: 649 [2024-11-22 01:44:19,606 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 [2024-11-22 01:44:19,606 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 124 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:19,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2625 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:44:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-22 01:44:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 619. [2024-11-22 01:44:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 493 states have (on average 1.643002028397566) internal successors, (810), 512 states have internal predecessors, (810), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-22 01:44:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1003 transitions. [2024-11-22 01:44:19,626 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1003 transitions. Word has length 139 [2024-11-22 01:44:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:19,626 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 1003 transitions. [2024-11-22 01:44:19,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:19,627 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1003 transitions. [2024-11-22 01:44:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 01:44:19,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:19,630 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:19,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:19,830 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 [2024-11-22 01:44:19,831 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:19,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1139515995, now seen corresponding path program 1 times [2024-11-22 01:44:19,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:19,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532415031] [2024-11-22 01:44:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:20,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:20,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532415031] [2024-11-22 01:44:20,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532415031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:20,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883701934] [2024-11-22 01:44:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:20,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:20,006 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:20,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 01:44:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:20,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:44:20,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:20,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883701934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-22 01:44:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221781221] [2024-11-22 01:44:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:20,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:20,390 INFO L87 Difference]: Start difference. First operand 619 states and 1003 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:20,512 INFO L93 Difference]: Finished difference Result 1203 states and 1961 transitions. [2024-11-22 01:44:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2024-11-22 01:44:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:20,516 INFO L225 Difference]: With dead ends: 1203 [2024-11-22 01:44:20,517 INFO L226 Difference]: Without dead ends: 657 [2024-11-22 01:44:20,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:44:20,520 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 113 mSDsluCounter, 5269 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6162 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 [2024-11-22 01:44:20,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6162 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-22 01:44:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 638. [2024-11-22 01:44:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 509 states have (on average 1.6424361493123771) internal successors, (836), 530 states have internal predecessors, (836), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2024-11-22 01:44:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1033 transitions. [2024-11-22 01:44:20,541 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1033 transitions. Word has length 139 [2024-11-22 01:44:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:20,542 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 1033 transitions. [2024-11-22 01:44:20,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1033 transitions. [2024-11-22 01:44:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-22 01:44:20,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:20,545 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:20,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 01:44:20,745 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 [2024-11-22 01:44:20,745 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:20,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2033172102, now seen corresponding path program 1 times [2024-11-22 01:44:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945242820] [2024-11-22 01:44:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945242820] [2024-11-22 01:44:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945242820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091812285] [2024-11-22 01:44:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:20,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:20,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:20,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:20,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 01:44:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:21,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:44:21,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:21,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091812285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:21,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 01:44:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792587639] [2024-11-22 01:44:21,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:21,181 INFO L87 Difference]: Start difference. First operand 638 states and 1033 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:21,260 INFO L93 Difference]: Finished difference Result 1141 states and 1861 transitions. [2024-11-22 01:44:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2024-11-22 01:44:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:21,265 INFO L225 Difference]: With dead ends: 1141 [2024-11-22 01:44:21,265 INFO L226 Difference]: Without dead ends: 662 [2024-11-22 01:44:21,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:21,268 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 86 mSDsluCounter, 4451 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5357 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 [2024-11-22 01:44:21,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5357 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-22 01:44:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 657. [2024-11-22 01:44:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2024-11-22 01:44:21,291 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 139 [2024-11-22 01:44:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:21,291 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2024-11-22 01:44:21,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2024-11-22 01:44:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 01:44:21,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:21,294 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:21,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:21,497 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 [2024-11-22 01:44:21,498 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:21,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1429462892, now seen corresponding path program 1 times [2024-11-22 01:44:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:21,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509258294] [2024-11-22 01:44:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:21,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509258294] [2024-11-22 01:44:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509258294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580608896] [2024-11-22 01:44:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:21,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:21,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 01:44:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:21,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:44:21,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:21,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:21,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580608896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:21,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:21,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 01:44:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215727514] [2024-11-22 01:44:21,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:21,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:21,927 INFO L87 Difference]: Start difference. First operand 657 states and 1063 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:22,029 INFO L93 Difference]: Finished difference Result 1171 states and 1912 transitions. [2024-11-22 01:44:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2024-11-22 01:44:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:22,034 INFO L225 Difference]: With dead ends: 1171 [2024-11-22 01:44:22,034 INFO L226 Difference]: Without dead ends: 692 [2024-11-22 01:44:22,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:22,037 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 95 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5347 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:22,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5347 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-22 01:44:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 657. [2024-11-22 01:44:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2024-11-22 01:44:22,058 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 140 [2024-11-22 01:44:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:22,059 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2024-11-22 01:44:22,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2024-11-22 01:44:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 01:44:22,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:22,062 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-22 01:44:22,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 01:44:22,262 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 [2024-11-22 01:44:22,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:22,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1870169108, now seen corresponding path program 1 times [2024-11-22 01:44:22,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:22,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882881110] [2024-11-22 01:44:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:22,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882881110] [2024-11-22 01:44:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882881110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:22,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367694152] [2024-11-22 01:44:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:22,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:22,370 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:22,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 01:44:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:22,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:44:22,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:22,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:22,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367694152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-22 01:44:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864143891] [2024-11-22 01:44:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:22,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:22,710 INFO L87 Difference]: Start difference. First operand 657 states and 1063 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, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:22,810 INFO L93 Difference]: Finished difference Result 1156 states and 1886 transitions. [2024-11-22 01:44:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:22,811 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, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2024-11-22 01:44:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:22,814 INFO L225 Difference]: With dead ends: 1156 [2024-11-22 01:44:22,814 INFO L226 Difference]: Without dead ends: 677 [2024-11-22 01:44:22,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:44:22,817 INFO L432 NwaCegarLoop]: 895 mSDtfsCounter, 113 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6170 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 [2024-11-22 01:44:22,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6170 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-22 01:44:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2024-11-22 01:44:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.641904761904762) internal successors, (862), 548 states have internal predecessors, (862), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1063 transitions. [2024-11-22 01:44:22,831 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1063 transitions. Word has length 140 [2024-11-22 01:44:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:22,831 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1063 transitions. [2024-11-22 01:44:22,831 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, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1063 transitions. [2024-11-22 01:44:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-22 01:44:22,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:22,834 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:22,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 01:44:23,034 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 [2024-11-22 01:44:23,035 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:23,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1619140609, now seen corresponding path program 1 times [2024-11-22 01:44:23,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626005452] [2024-11-22 01:44:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626005452] [2024-11-22 01:44:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626005452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660400462] [2024-11-22 01:44:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:23,104 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:23,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 01:44:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:23,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:23,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:44:23,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660400462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:23,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530621805] [2024-11-22 01:44:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:23,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:23,462 INFO L87 Difference]: Start difference. First operand 657 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:23,506 INFO L93 Difference]: Finished difference Result 1208 states and 1971 transitions. [2024-11-22 01:44:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-22 01:44:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:23,514 INFO L225 Difference]: With dead ends: 1208 [2024-11-22 01:44:23,514 INFO L226 Difference]: Without dead ends: 657 [2024-11-22 01:44:23,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:23,519 INFO L432 NwaCegarLoop]: 901 mSDtfsCounter, 13 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2699 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 [2024-11-22 01:44:23,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2699 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-22 01:44:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2024-11-22 01:44:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6342857142857143) internal successors, (858), 548 states have internal predecessors, (858), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1059 transitions. [2024-11-22 01:44:23,546 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1059 transitions. Word has length 140 [2024-11-22 01:44:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:23,546 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1059 transitions. [2024-11-22 01:44:23,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1059 transitions. [2024-11-22 01:44:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-22 01:44:23,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:23,551 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-22 01:44:23,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 01:44:23,751 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 [2024-11-22 01:44:23,752 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:23,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -536325934, now seen corresponding path program 1 times [2024-11-22 01:44:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911241547] [2024-11-22 01:44:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911241547] [2024-11-22 01:44:23,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911241547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480719907] [2024-11-22 01:44:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:23,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:23,839 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) [2024-11-22 01:44:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 01:44:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:24,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:44:24,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 01:44:24,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480719907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299345096] [2024-11-22 01:44:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:24,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:24,160 INFO L87 Difference]: Start difference. First operand 657 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:24,202 INFO L93 Difference]: Finished difference Result 1252 states and 2039 transitions. [2024-11-22 01:44:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-11-22 01:44:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:24,210 INFO L225 Difference]: With dead ends: 1252 [2024-11-22 01:44:24,210 INFO L226 Difference]: Without dead ends: 681 [2024-11-22 01:44:24,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:24,213 INFO L432 NwaCegarLoop]: 895 mSDtfsCounter, 7 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2672 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 [2024-11-22 01:44:24,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2672 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-22 01:44:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2024-11-22 01:44:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 549 states have (on average 1.6138433515482695) internal successors, (886), 572 states have internal predecessors, (886), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1087 transitions. [2024-11-22 01:44:24,226 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1087 transitions. Word has length 141 [2024-11-22 01:44:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:24,227 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1087 transitions. [2024-11-22 01:44:24,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-22 01:44:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1087 transitions. [2024-11-22 01:44:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-22 01:44:24,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:24,229 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 01:44:24,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:24,430 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 [2024-11-22 01:44:24,430 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:24,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash -310637726, now seen corresponding path program 1 times [2024-11-22 01:44:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761682334] [2024-11-22 01:44:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:24,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761682334] [2024-11-22 01:44:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761682334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910173294] [2024-11-22 01:44:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:24,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:24,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:24,496 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) [2024-11-22 01:44:24,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 01:44:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:24,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:44:24,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 01:44:24,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910173294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-22 01:44:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970009478] [2024-11-22 01:44:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:24,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:24,861 INFO L87 Difference]: Start difference. First operand 681 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:24,971 INFO L93 Difference]: Finished difference Result 1186 states and 1918 transitions. [2024-11-22 01:44:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2024-11-22 01:44:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:24,975 INFO L225 Difference]: With dead ends: 1186 [2024-11-22 01:44:24,975 INFO L226 Difference]: Without dead ends: 707 [2024-11-22 01:44:24,977 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 [2024-11-22 01:44:24,977 INFO L432 NwaCegarLoop]: 889 mSDtfsCounter, 119 mSDsluCounter, 5237 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6126 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 [2024-11-22 01:44:24,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6126 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-22 01:44:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 681. [2024-11-22 01:44:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 549 states have (on average 1.6138433515482695) internal successors, (886), 572 states have internal predecessors, (886), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2024-11-22 01:44:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1087 transitions. [2024-11-22 01:44:24,993 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1087 transitions. Word has length 142 [2024-11-22 01:44:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:24,993 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1087 transitions. [2024-11-22 01:44:24,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-22 01:44:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1087 transitions. [2024-11-22 01:44:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-22 01:44:24,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:24,996 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-22 01:44:25,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 01:44:25,196 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 [2024-11-22 01:44:25,197 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:25,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash -474940870, now seen corresponding path program 1 times [2024-11-22 01:44:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254573629] [2024-11-22 01:44:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:25,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:44:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254573629] [2024-11-22 01:44:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254573629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088614260] [2024-11-22 01:44:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:25,297 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) [2024-11-22 01:44:25,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 01:44:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:25,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:25,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:25,661 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088614260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:25,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:44:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289706733] [2024-11-22 01:44:25,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:25,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:25,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:25,663 INFO L87 Difference]: Start difference. First operand 681 states and 1087 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, (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) [2024-11-22 01:44:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:26,101 INFO L93 Difference]: Finished difference Result 1163 states and 1905 transitions. [2024-11-22 01:44:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:44:26,101 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, (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 [2024-11-22 01:44:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:26,104 INFO L225 Difference]: With dead ends: 1163 [2024-11-22 01:44:26,104 INFO L226 Difference]: Without dead ends: 689 [2024-11-22 01:44:26,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:44:26,106 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 859 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:26,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2299 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:44:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-22 01:44:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2024-11-22 01:44:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 556 states have (on average 1.6151079136690647) internal successors, (898), 579 states have internal predecessors, (898), 101 states have call successors, (101), 28 states have call predecessors, (101), 31 states have return successors, (101), 94 states have call predecessors, (101), 96 states have call successors, (101) [2024-11-22 01:44:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1100 transitions. [2024-11-22 01:44:26,120 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1100 transitions. Word has length 142 [2024-11-22 01:44:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:26,120 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1100 transitions. [2024-11-22 01:44:26,120 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, (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) [2024-11-22 01:44:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1100 transitions. [2024-11-22 01:44:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 01:44:26,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:26,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-22 01:44:26,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:26,323 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 [2024-11-22 01:44:26,323 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:26,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash 704724358, now seen corresponding path program 1 times [2024-11-22 01:44:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314746463] [2024-11-22 01:44:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 01:44:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314746463] [2024-11-22 01:44:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314746463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816985293] [2024-11-22 01:44:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:26,412 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) [2024-11-22 01:44:26,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 01:44:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:26,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:26,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:26,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816985293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:26,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:26,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:44:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536162634] [2024-11-22 01:44:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:26,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:26,771 INFO L87 Difference]: Start difference. First operand 689 states and 1100 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, (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) [2024-11-22 01:44:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:27,168 INFO L93 Difference]: Finished difference Result 1179 states and 1928 transitions. [2024-11-22 01:44:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:44:27,169 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, (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 144 [2024-11-22 01:44:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:27,173 INFO L225 Difference]: With dead ends: 1179 [2024-11-22 01:44:27,173 INFO L226 Difference]: Without dead ends: 697 [2024-11-22 01:44:27,176 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 [2024-11-22 01:44:27,176 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 857 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:27,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2296 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:44:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-22 01:44:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-11-22 01:44:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 563 states have (on average 1.6163410301953818) internal successors, (910), 586 states have internal predecessors, (910), 101 states have call successors, (101), 29 states have call predecessors, (101), 32 states have return successors, (102), 94 states have call predecessors, (102), 96 states have call successors, (102) [2024-11-22 01:44:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1113 transitions. [2024-11-22 01:44:27,192 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1113 transitions. Word has length 144 [2024-11-22 01:44:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:27,192 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1113 transitions. [2024-11-22 01:44:27,192 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, (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) [2024-11-22 01:44:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1113 transitions. [2024-11-22 01:44:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 01:44:27,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:27,195 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2024-11-22 01:44:27,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:27,395 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 [2024-11-22 01:44:27,396 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:27,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash -692434758, now seen corresponding path program 1 times [2024-11-22 01:44:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848749027] [2024-11-22 01:44:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848749027] [2024-11-22 01:44:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848749027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868207588] [2024-11-22 01:44:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:27,486 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) [2024-11-22 01:44:27,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 01:44:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:27,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:27,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:27,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868207588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:27,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:27,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:44:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322610533] [2024-11-22 01:44:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:27,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:27,918 INFO L87 Difference]: Start difference. First operand 697 states and 1113 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, (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) [2024-11-22 01:44:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:28,316 INFO L93 Difference]: Finished difference Result 1195 states and 1951 transitions. [2024-11-22 01:44:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:44:28,317 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, (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 146 [2024-11-22 01:44:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:28,321 INFO L225 Difference]: With dead ends: 1195 [2024-11-22 01:44:28,321 INFO L226 Difference]: Without dead ends: 705 [2024-11-22 01:44:28,323 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 [2024-11-22 01:44:28,323 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 838 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:28,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2293 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:44:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-22 01:44:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2024-11-22 01:44:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 570 states have (on average 1.6175438596491227) internal successors, (922), 593 states have internal predecessors, (922), 101 states have call successors, (101), 30 states have call predecessors, (101), 33 states have return successors, (103), 94 states have call predecessors, (103), 96 states have call successors, (103) [2024-11-22 01:44:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1126 transitions. [2024-11-22 01:44:28,339 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1126 transitions. Word has length 146 [2024-11-22 01:44:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:28,339 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 1126 transitions. [2024-11-22 01:44:28,339 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, (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) [2024-11-22 01:44:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1126 transitions. [2024-11-22 01:44:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 01:44:28,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:28,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2024-11-22 01:44:28,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 01:44:28,542 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 [2024-11-22 01:44:28,542 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:28,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash 682491518, now seen corresponding path program 1 times [2024-11-22 01:44:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691183322] [2024-11-22 01:44:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 01:44:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691183322] [2024-11-22 01:44:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691183322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826071814] [2024-11-22 01:44:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:28,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:28,612 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) [2024-11-22 01:44:28,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 01:44:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:28,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:28,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:28,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826071814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:44:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464266421] [2024-11-22 01:44:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:28,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:28,963 INFO L87 Difference]: Start difference. First operand 705 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 19.2) 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) [2024-11-22 01:44:29,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:29,345 INFO L93 Difference]: Finished difference Result 1211 states and 1974 transitions. [2024-11-22 01:44:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:44:29,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) 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 148 [2024-11-22 01:44:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:29,351 INFO L225 Difference]: With dead ends: 1211 [2024-11-22 01:44:29,351 INFO L226 Difference]: Without dead ends: 713 [2024-11-22 01:44:29,354 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 [2024-11-22 01:44:29,354 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 844 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:29,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2290 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 01:44:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-22 01:44:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-22 01:44:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 577 states have (on average 1.6187175043327557) internal successors, (934), 600 states have internal predecessors, (934), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2024-11-22 01:44:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1139 transitions. [2024-11-22 01:44:29,401 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1139 transitions. Word has length 148 [2024-11-22 01:44:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:29,401 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1139 transitions. [2024-11-22 01:44:29,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) 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) [2024-11-22 01:44:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1139 transitions. [2024-11-22 01:44:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 01:44:29,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:29,404 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-22 01:44:29,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:29,604 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 [2024-11-22 01:44:29,605 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:29,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash -653781702, now seen corresponding path program 1 times [2024-11-22 01:44:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396529857] [2024-11-22 01:44:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396529857] [2024-11-22 01:44:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396529857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619900466] [2024-11-22 01:44:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:29,688 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) [2024-11-22 01:44:29,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 01:44:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:29,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:29,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 01:44:30,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619900466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:30,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:30,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:44:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467888149] [2024-11-22 01:44:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:30,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:30,121 INFO L87 Difference]: Start difference. First operand 713 states and 1139 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:44:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:30,371 INFO L93 Difference]: Finished difference Result 762 states and 1211 transitions. [2024-11-22 01:44:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:30,374 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 150 [2024-11-22 01:44:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:30,380 INFO L225 Difference]: With dead ends: 762 [2024-11-22 01:44:30,380 INFO L226 Difference]: Without dead ends: 747 [2024-11-22 01:44:30,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:30,382 INFO L432 NwaCegarLoop]: 901 mSDtfsCounter, 835 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:30,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1647 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:44:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-22 01:44:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 716. [2024-11-22 01:44:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 580 states have (on average 1.6155172413793104) internal successors, (937), 603 states have internal predecessors, (937), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2024-11-22 01:44:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1142 transitions. [2024-11-22 01:44:30,406 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1142 transitions. Word has length 150 [2024-11-22 01:44:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:30,406 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1142 transitions. [2024-11-22 01:44:30,407 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:44:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1142 transitions. [2024-11-22 01:44:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 01:44:30,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:30,414 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2024-11-22 01:44:30,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:30,614 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 [2024-11-22 01:44:30,615 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:30,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 949387253, now seen corresponding path program 1 times [2024-11-22 01:44:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:30,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488099562] [2024-11-22 01:44:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488099562] [2024-11-22 01:44:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488099562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384189902] [2024-11-22 01:44:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:30,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:30,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:30,719 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) [2024-11-22 01:44:30,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 01:44:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:31,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:44:31,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 01:44:31,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:31,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384189902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:31,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-22 01:44:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44017941] [2024-11-22 01:44:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:31,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:31,034 INFO L87 Difference]: Start difference. First operand 716 states and 1142 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-22 01:44:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:31,076 INFO L93 Difference]: Finished difference Result 731 states and 1160 transitions. [2024-11-22 01:44:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:31,077 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2024-11-22 01:44:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:31,080 INFO L225 Difference]: With dead ends: 731 [2024-11-22 01:44:31,080 INFO L226 Difference]: Without dead ends: 716 [2024-11-22 01:44:31,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:31,081 INFO L432 NwaCegarLoop]: 908 mSDtfsCounter, 0 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:31,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-22 01:44:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-22 01:44:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 580 states have (on average 1.6137931034482758) internal successors, (936), 603 states have internal predecessors, (936), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2024-11-22 01:44:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1141 transitions. [2024-11-22 01:44:31,098 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1141 transitions. Word has length 156 [2024-11-22 01:44:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:31,098 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1141 transitions. [2024-11-22 01:44:31,098 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-22 01:44:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1141 transitions. [2024-11-22 01:44:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-22 01:44:31,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:31,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:31,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-22 01:44:31,301 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 [2024-11-22 01:44:31,302 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -328839182, now seen corresponding path program 1 times [2024-11-22 01:44:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265440877] [2024-11-22 01:44:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 01:44:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265440877] [2024-11-22 01:44:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265440877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632839315] [2024-11-22 01:44:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:31,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:31,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:31,409 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) [2024-11-22 01:44:31,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 01:44:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:31,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:44:31,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-22 01:44:31,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632839315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-22 01:44:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565575497] [2024-11-22 01:44:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:31,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:31,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:31,720 INFO L87 Difference]: Start difference. First operand 716 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 01:44:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:31,758 INFO L93 Difference]: Finished difference Result 1406 states and 2252 transitions. [2024-11-22 01:44:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:31,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2024-11-22 01:44:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:31,763 INFO L225 Difference]: With dead ends: 1406 [2024-11-22 01:44:31,763 INFO L226 Difference]: Without dead ends: 685 [2024-11-22 01:44:31,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:44:31,765 INFO L432 NwaCegarLoop]: 902 mSDtfsCounter, 7 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2699 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 [2024-11-22 01:44:31,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2699 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-22 01:44:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2024-11-22 01:44:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 552 states have (on average 1.6123188405797102) internal successors, (890), 573 states have internal predecessors, (890), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2024-11-22 01:44:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1091 transitions. [2024-11-22 01:44:31,790 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1091 transitions. Word has length 167 [2024-11-22 01:44:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:31,791 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1091 transitions. [2024-11-22 01:44:31,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 01:44:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1091 transitions. [2024-11-22 01:44:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-22 01:44:31,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:31,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:31,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:31,994 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 [2024-11-22 01:44:31,995 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1968153309, now seen corresponding path program 1 times [2024-11-22 01:44:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308980378] [2024-11-22 01:44:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:31,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 01:44:32,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:32,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308980378] [2024-11-22 01:44:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308980378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275043822] [2024-11-22 01:44:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:32,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:32,138 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) [2024-11-22 01:44:32,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-22 01:44:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:32,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:44:32,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:32,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:32,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275043822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:32,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:32,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-22 01:44:32,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404769568] [2024-11-22 01:44:32,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:32,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:32,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:32,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:32,500 INFO L87 Difference]: Start difference. First operand 685 states and 1091 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:32,561 INFO L93 Difference]: Finished difference Result 1339 states and 2146 transitions. [2024-11-22 01:44:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:32,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2024-11-22 01:44:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:32,566 INFO L225 Difference]: With dead ends: 1339 [2024-11-22 01:44:32,567 INFO L226 Difference]: Without dead ends: 685 [2024-11-22 01:44:32,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:44:32,569 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 119 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5394 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 [2024-11-22 01:44:32,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5394 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-22 01:44:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 664. [2024-11-22 01:44:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 531 states have (on average 1.6120527306967984) internal successors, (856), 552 states have internal predecessors, (856), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2024-11-22 01:44:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1057 transitions. [2024-11-22 01:44:32,588 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1057 transitions. Word has length 169 [2024-11-22 01:44:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:32,588 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1057 transitions. [2024-11-22 01:44:32,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1057 transitions. [2024-11-22 01:44:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-22 01:44:32,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:32,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:32,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-22 01:44:32,794 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 [2024-11-22 01:44:32,794 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:32,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 515190936, now seen corresponding path program 1 times [2024-11-22 01:44:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646242985] [2024-11-22 01:44:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:32,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:32,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646242985] [2024-11-22 01:44:32,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646242985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:32,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412068574] [2024-11-22 01:44:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:32,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:32,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:32,914 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) [2024-11-22 01:44:32,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-22 01:44:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:33,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:33,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 01:44:33,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412068574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:33,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 01:44:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94455940] [2024-11-22 01:44:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:33,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:44:33,218 INFO L87 Difference]: Start difference. First operand 664 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-22 01:44:33,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:33,303 INFO L93 Difference]: Finished difference Result 1321 states and 2116 transitions. [2024-11-22 01:44:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:33,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 171 [2024-11-22 01:44:33,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:33,308 INFO L225 Difference]: With dead ends: 1321 [2024-11-22 01:44:33,308 INFO L226 Difference]: Without dead ends: 688 [2024-11-22 01:44:33,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:33,311 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 128 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2578 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 [2024-11-22 01:44:33,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2578 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-22 01:44:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 664. [2024-11-22 01:44:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 531 states have (on average 1.6101694915254237) internal successors, (855), 552 states have internal predecessors, (855), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2024-11-22 01:44:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1056 transitions. [2024-11-22 01:44:33,327 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1056 transitions. Word has length 171 [2024-11-22 01:44:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:33,328 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1056 transitions. [2024-11-22 01:44:33,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2024-11-22 01:44:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1056 transitions. [2024-11-22 01:44:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-22 01:44:33,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:33,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:33,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-22 01:44:33,530 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 [2024-11-22 01:44:33,531 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:33,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -671010111, now seen corresponding path program 1 times [2024-11-22 01:44:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565699515] [2024-11-22 01:44:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 01:44:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565699515] [2024-11-22 01:44:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565699515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:33,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:44:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:44:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91384188] [2024-11-22 01:44:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:33,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:33,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:33,662 INFO L87 Difference]: Start difference. First operand 664 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-11-22 01:44:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:33,701 INFO L93 Difference]: Finished difference Result 1256 states and 2025 transitions. [2024-11-22 01:44:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 172 [2024-11-22 01:44:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:33,706 INFO L225 Difference]: With dead ends: 1256 [2024-11-22 01:44:33,707 INFO L226 Difference]: Without dead ends: 624 [2024-11-22 01:44:33,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:44:33,709 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 8 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2696 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 [2024-11-22 01:44:33,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2696 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-22 01:44:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2024-11-22 01:44:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 494 states have (on average 1.6032388663967612) internal successors, (792), 513 states have internal predecessors, (792), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-22 01:44:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 989 transitions. [2024-11-22 01:44:33,735 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 989 transitions. Word has length 172 [2024-11-22 01:44:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:33,735 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 989 transitions. [2024-11-22 01:44:33,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-11-22 01:44:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 989 transitions. [2024-11-22 01:44:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-22 01:44:33,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:33,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:33,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 01:44:33,739 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:33,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 877513276, now seen corresponding path program 1 times [2024-11-22 01:44:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470712910] [2024-11-22 01:44:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-22 01:44:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470712910] [2024-11-22 01:44:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470712910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:33,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:44:33,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:44:33,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470270614] [2024-11-22 01:44:33,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:33,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:33,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:33,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:33,890 INFO L87 Difference]: Start difference. First operand 624 states and 989 transitions. Second operand has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:33,941 INFO L93 Difference]: Finished difference Result 1159 states and 1864 transitions. [2024-11-22 01:44:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:33,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2024-11-22 01:44:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:33,945 INFO L225 Difference]: With dead ends: 1159 [2024-11-22 01:44:33,946 INFO L226 Difference]: Without dead ends: 610 [2024-11-22 01:44:33,948 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 [2024-11-22 01:44:33,948 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 88 mSDsluCounter, 4337 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5220 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 [2024-11-22 01:44:33,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5220 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-22 01:44:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2024-11-22 01:44:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 480 states have (on average 1.5979166666666667) internal successors, (767), 499 states have internal predecessors, (767), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-22 01:44:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 964 transitions. [2024-11-22 01:44:33,963 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 964 transitions. Word has length 173 [2024-11-22 01:44:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:33,963 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 964 transitions. [2024-11-22 01:44:33,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 964 transitions. [2024-11-22 01:44:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-22 01:44:33,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:33,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:33,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 01:44:33,966 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:33,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -479023060, now seen corresponding path program 1 times [2024-11-22 01:44:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:33,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065766724] [2024-11-22 01:44:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065766724] [2024-11-22 01:44:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065766724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:34,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:44:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 01:44:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853179968] [2024-11-22 01:44:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:34,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:44:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:44:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:34,184 INFO L87 Difference]: Start difference. First operand 610 states and 964 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:34,355 INFO L93 Difference]: Finished difference Result 1186 states and 1892 transitions. [2024-11-22 01:44:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 01:44:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 174 [2024-11-22 01:44:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:34,370 INFO L225 Difference]: With dead ends: 1186 [2024-11-22 01:44:34,370 INFO L226 Difference]: Without dead ends: 601 [2024-11-22 01:44:34,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:34,377 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 45 mSDsluCounter, 6697 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7540 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 [2024-11-22 01:44:34,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7540 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:34,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-22 01:44:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2024-11-22 01:44:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 471 states have (on average 1.5966029723991508) internal successors, (752), 490 states have internal predecessors, (752), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-22 01:44:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 949 transitions. [2024-11-22 01:44:34,410 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 949 transitions. Word has length 174 [2024-11-22 01:44:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:34,410 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 949 transitions. [2024-11-22 01:44:34,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 949 transitions. [2024-11-22 01:44:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 01:44:34,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:34,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:34,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 01:44:34,415 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:34,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash -216309613, now seen corresponding path program 1 times [2024-11-22 01:44:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:34,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405153401] [2024-11-22 01:44:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 01:44:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405153401] [2024-11-22 01:44:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405153401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:34,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:44:34,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 01:44:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917173214] [2024-11-22 01:44:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:34,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:44:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:44:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:34,671 INFO L87 Difference]: Start difference. First operand 601 states and 949 transitions. Second operand has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:34,797 INFO L93 Difference]: Finished difference Result 1118 states and 1798 transitions. [2024-11-22 01:44:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:34,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 175 [2024-11-22 01:44:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:34,804 INFO L225 Difference]: With dead ends: 1118 [2024-11-22 01:44:34,804 INFO L226 Difference]: Without dead ends: 595 [2024-11-22 01:44:34,806 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 [2024-11-22 01:44:34,808 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 31 mSDsluCounter, 5920 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6772 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 [2024-11-22 01:44:34,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6772 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-22 01:44:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-22 01:44:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 465 states have (on average 1.6021505376344085) internal successors, (745), 484 states have internal predecessors, (745), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-22 01:44:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 942 transitions. [2024-11-22 01:44:34,832 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 942 transitions. Word has length 175 [2024-11-22 01:44:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:34,832 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 942 transitions. [2024-11-22 01:44:34,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-22 01:44:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 942 transitions. [2024-11-22 01:44:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 01:44:34,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:34,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:34,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 01:44:34,836 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:34,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 273322773, now seen corresponding path program 1 times [2024-11-22 01:44:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402965676] [2024-11-22 01:44:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:44:35,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402965676] [2024-11-22 01:44:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402965676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642325071] [2024-11-22 01:44:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:35,245 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) [2024-11-22 01:44:35,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-22 01:44:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:35,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 01:44:35,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 01:44:35,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:35,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642325071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-22 01:44:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627416994] [2024-11-22 01:44:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:35,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-22 01:44:35,708 INFO L87 Difference]: Start difference. First operand 595 states and 942 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-22 01:44:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:38,292 INFO L93 Difference]: Finished difference Result 1948 states and 3189 transitions. [2024-11-22 01:44:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 01:44:38,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 175 [2024-11-22 01:44:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:38,299 INFO L225 Difference]: With dead ends: 1948 [2024-11-22 01:44:38,300 INFO L226 Difference]: Without dead ends: 1439 [2024-11-22 01:44:38,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-22 01:44:38,302 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 2338 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 4732 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 4732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:38,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2779 Invalid, 5251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 4732 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-22 01:44:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-11-22 01:44:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1324. [2024-11-22 01:44:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1037 states have (on average 1.639344262295082) internal successors, (1700), 1076 states have internal predecessors, (1700), 217 states have call successors, (217), 64 states have call predecessors, (217), 69 states have return successors, (236), 209 states have call predecessors, (236), 212 states have call successors, (236) [2024-11-22 01:44:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2153 transitions. [2024-11-22 01:44:38,336 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2153 transitions. Word has length 175 [2024-11-22 01:44:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:38,336 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2153 transitions. [2024-11-22 01:44:38,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-22 01:44:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2153 transitions. [2024-11-22 01:44:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-22 01:44:38,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:38,338 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] [2024-11-22 01:44:38,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:38,539 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 [2024-11-22 01:44:38,539 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:38,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash 452898837, now seen corresponding path program 1 times [2024-11-22 01:44:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85260182] [2024-11-22 01:44:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 01:44:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85260182] [2024-11-22 01:44:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85260182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347511997] [2024-11-22 01:44:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:38,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:38,923 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) [2024-11-22 01:44:38,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-22 01:44:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:39,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 01:44:39,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-22 01:44:39,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347511997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-22 01:44:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061638670] [2024-11-22 01:44:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:39,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:44:39,364 INFO L87 Difference]: Start difference. First operand 1324 states and 2153 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) [2024-11-22 01:44:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:41,035 INFO L93 Difference]: Finished difference Result 2821 states and 4630 transitions. [2024-11-22 01:44:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 01:44:41,036 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 [2024-11-22 01:44:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:41,047 INFO L225 Difference]: With dead ends: 2821 [2024-11-22 01:44:41,048 INFO L226 Difference]: Without dead ends: 1583 [2024-11-22 01:44:41,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-22 01:44:41,054 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 2088 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 3864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:41,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 2048 Invalid, 3864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 01:44:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2024-11-22 01:44:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1395. [2024-11-22 01:44:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1089 states have (on average 1.6271808999081727) internal successors, (1772), 1134 states have internal predecessors, (1772), 225 states have call successors, (225), 69 states have call predecessors, (225), 80 states have return successors, (262), 217 states have call predecessors, (262), 220 states have call successors, (262) [2024-11-22 01:44:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2259 transitions. [2024-11-22 01:44:41,130 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2259 transitions. Word has length 177 [2024-11-22 01:44:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:41,131 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 2259 transitions. [2024-11-22 01:44:41,131 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) [2024-11-22 01:44:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2259 transitions. [2024-11-22 01:44:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-22 01:44:41,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:41,134 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] [2024-11-22 01:44:41,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-22 01:44:41,334 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 [2024-11-22 01:44:41,335 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:41,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1304846357, now seen corresponding path program 1 times [2024-11-22 01:44:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:41,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935084124] [2024-11-22 01:44:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:41,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 01:44:41,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935084124] [2024-11-22 01:44:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935084124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762710055] [2024-11-22 01:44:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:41,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:41,607 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) [2024-11-22 01:44:41,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-22 01:44:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:41,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 01:44:41,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-22 01:44:41,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762710055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:41,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-22 01:44:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634161749] [2024-11-22 01:44:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:41,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:44:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:44:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:44:41,964 INFO L87 Difference]: Start difference. First operand 1395 states and 2259 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) [2024-11-22 01:44:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:42,065 INFO L93 Difference]: Finished difference Result 3395 states and 5590 transitions. [2024-11-22 01:44:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:44:42,066 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 [2024-11-22 01:44:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:42,082 INFO L225 Difference]: With dead ends: 3395 [2024-11-22 01:44:42,084 INFO L226 Difference]: Without dead ends: 2090 [2024-11-22 01:44:42,090 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 [2024-11-22 01:44:42,090 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 777 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:42,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 2372 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2024-11-22 01:44:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1391. [2024-11-22 01:44:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1087 states have (on average 1.6264949402023918) internal successors, (1768), 1130 states have internal predecessors, (1768), 225 states have call successors, (225), 69 states have call predecessors, (225), 78 states have return successors, (253), 217 states have call predecessors, (253), 220 states have call successors, (253) [2024-11-22 01:44:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2246 transitions. [2024-11-22 01:44:42,165 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2246 transitions. Word has length 182 [2024-11-22 01:44:42,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:42,165 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2246 transitions. [2024-11-22 01:44:42,166 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) [2024-11-22 01:44:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2246 transitions. [2024-11-22 01:44:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-22 01:44:42,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:42,169 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] [2024-11-22 01:44:42,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-22 01:44:42,369 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 [2024-11-22 01:44:42,370 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:42,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -744541485, now seen corresponding path program 1 times [2024-11-22 01:44:42,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410027278] [2024-11-22 01:44:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 01:44:42,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410027278] [2024-11-22 01:44:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410027278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657250495] [2024-11-22 01:44:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:42,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:42,695 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) [2024-11-22 01:44:42,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-22 01:44:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:43,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 01:44:43,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-22 01:44:43,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657250495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-22 01:44:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590064317] [2024-11-22 01:44:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:43,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:44:43,143 INFO L87 Difference]: Start difference. First operand 1391 states and 2246 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) [2024-11-22 01:44:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:43,794 INFO L93 Difference]: Finished difference Result 2680 states and 4370 transitions. [2024-11-22 01:44:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:43,795 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 [2024-11-22 01:44:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:43,802 INFO L225 Difference]: With dead ends: 2680 [2024-11-22 01:44:43,803 INFO L226 Difference]: Without dead ends: 1375 [2024-11-22 01:44:43,808 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 [2024-11-22 01:44:43,808 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 1261 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:43,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 321 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 01:44:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-22 01:44:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2024-11-22 01:44:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1077 states have (on average 1.6220984215413186) internal successors, (1747), 1119 states have internal predecessors, (1747), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2024-11-22 01:44:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2214 transitions. [2024-11-22 01:44:43,851 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2214 transitions. Word has length 182 [2024-11-22 01:44:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:43,852 INFO L471 AbstractCegarLoop]: Abstraction has 1375 states and 2214 transitions. [2024-11-22 01:44:43,852 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) [2024-11-22 01:44:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2214 transitions. [2024-11-22 01:44:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-22 01:44:43,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:43,854 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] [2024-11-22 01:44:43,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-22 01:44:44,054 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 [2024-11-22 01:44:44,055 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1606093560, now seen corresponding path program 1 times [2024-11-22 01:44:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:44,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711307838] [2024-11-22 01:44:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 01:44:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711307838] [2024-11-22 01:44:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711307838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697955590] [2024-11-22 01:44:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:44,376 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) [2024-11-22 01:44:44,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-22 01:44:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:44,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 01:44:44,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-22 01:44:44,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697955590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:44,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:44,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-22 01:44:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360922448] [2024-11-22 01:44:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:44,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:44:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:44:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:44,742 INFO L87 Difference]: Start difference. First operand 1375 states and 2214 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) [2024-11-22 01:44:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:44,818 INFO L93 Difference]: Finished difference Result 1395 states and 2238 transitions. [2024-11-22 01:44:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:44,818 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 [2024-11-22 01:44:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:44,826 INFO L225 Difference]: With dead ends: 1395 [2024-11-22 01:44:44,826 INFO L226 Difference]: Without dead ends: 1381 [2024-11-22 01:44:44,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:44,827 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 0 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3413 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 [2024-11-22 01:44:44,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3413 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-22 01:44:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2024-11-22 01:44:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1083 states have (on average 1.6186518928901201) internal successors, (1753), 1125 states have internal predecessors, (1753), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2024-11-22 01:44:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2220 transitions. [2024-11-22 01:44:44,871 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2220 transitions. Word has length 183 [2024-11-22 01:44:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:44,871 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 2220 transitions. [2024-11-22 01:44:44,872 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) [2024-11-22 01:44:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2220 transitions. [2024-11-22 01:44:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-22 01:44:44,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:44,875 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] [2024-11-22 01:44:44,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-22 01:44:45,076 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 [2024-11-22 01:44:45,076 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:45,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 898180539, now seen corresponding path program 1 times [2024-11-22 01:44:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:45,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763972326] [2024-11-22 01:44:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-22 01:44:45,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:45,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763972326] [2024-11-22 01:44:45,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763972326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294400033] [2024-11-22 01:44:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:45,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:45,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:45,445 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) [2024-11-22 01:44:45,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-22 01:44:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:45,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:44:45,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-22 01:44:45,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:44:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-22 01:44:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294400033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:44:46,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:44:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-22 01:44:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271651759] [2024-11-22 01:44:46,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:44:46,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 01:44:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 01:44:46,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:44:46,364 INFO L87 Difference]: Start difference. First operand 1381 states and 2220 transitions. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-22 01:44:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:53,819 INFO L93 Difference]: Finished difference Result 10307 states and 17220 transitions. [2024-11-22 01:44:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-22 01:44:53,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 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 273 [2024-11-22 01:44:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:53,865 INFO L225 Difference]: With dead ends: 10307 [2024-11-22 01:44:53,866 INFO L226 Difference]: Without dead ends: 9012 [2024-11-22 01:44:53,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2024-11-22 01:44:53,881 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 6544 mSDsluCounter, 6338 mSDsCounter, 0 mSdLazyCounter, 15031 mSolverCounterSat, 2075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6626 SdHoareTripleChecker+Valid, 7171 SdHoareTripleChecker+Invalid, 17106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2075 IncrementalHoareTripleChecker+Valid, 15031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:53,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6626 Valid, 7171 Invalid, 17106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2075 Valid, 15031 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-22 01:44:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2024-11-22 01:44:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 7800. [2024-11-22 01:44:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 6008 states have (on average 1.5985352862849533) internal successors, (9604), 6260 states have internal predecessors, (9604), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 487 states have return successors, (1922), 1301 states have call predecessors, (1922), 1300 states have call successors, (1922) [2024-11-22 01:44:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12830 transitions. [2024-11-22 01:44:54,368 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12830 transitions. Word has length 273 [2024-11-22 01:44:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:54,369 INFO L471 AbstractCegarLoop]: Abstraction has 7800 states and 12830 transitions. [2024-11-22 01:44:54,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-22 01:44:54,369 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12830 transitions. [2024-11-22 01:44:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-22 01:44:54,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:54,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:54,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:54,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:54,591 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 288870321, now seen corresponding path program 1 times [2024-11-22 01:44:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432802666] [2024-11-22 01:44:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-22 01:44:54,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:54,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432802666] [2024-11-22 01:44:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432802666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:54,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:44:54,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 01:44:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719443851] [2024-11-22 01:44:54,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:54,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:54,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:44:54,802 INFO L87 Difference]: Start difference. First operand 7800 states and 12830 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) [2024-11-22 01:44:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:55,145 INFO L93 Difference]: Finished difference Result 15523 states and 25568 transitions. [2024-11-22 01:44:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:55,145 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 275 [2024-11-22 01:44:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:55,183 INFO L225 Difference]: With dead ends: 15523 [2024-11-22 01:44:55,183 INFO L226 Difference]: Without dead ends: 7791 [2024-11-22 01:44:55,209 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 [2024-11-22 01:44:55,210 INFO L432 NwaCegarLoop]: 845 mSDtfsCounter, 41 mSDsluCounter, 5018 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5863 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:55,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5863 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2024-11-22 01:44:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 7791. [2024-11-22 01:44:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 6001 states have (on average 1.5980669888351942) internal successors, (9590), 6252 states have internal predecessors, (9590), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 485 states have return successors, (1918), 1300 states have call predecessors, (1918), 1300 states have call successors, (1918) [2024-11-22 01:44:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 12812 transitions. [2024-11-22 01:44:55,683 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 12812 transitions. Word has length 275 [2024-11-22 01:44:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:55,684 INFO L471 AbstractCegarLoop]: Abstraction has 7791 states and 12812 transitions. [2024-11-22 01:44:55,684 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) [2024-11-22 01:44:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 12812 transitions. [2024-11-22 01:44:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 01:44:55,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:55,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:55,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-22 01:44:55,696 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:55,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 889312103, now seen corresponding path program 1 times [2024-11-22 01:44:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:55,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717503015] [2024-11-22 01:44:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:55,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-22 01:44:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717503015] [2024-11-22 01:44:55,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717503015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438421485] [2024-11-22 01:44:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:55,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:55,871 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) [2024-11-22 01:44:55,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-22 01:44:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:56,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:44:56,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-22 01:44:56,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438421485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:56,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:56,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-22 01:44:56,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849361203] [2024-11-22 01:44:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:56,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:56,269 INFO L87 Difference]: Start difference. First operand 7791 states and 12812 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-22 01:44:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:56,399 INFO L93 Difference]: Finished difference Result 10206 states and 16740 transitions. [2024-11-22 01:44:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 276 [2024-11-22 01:44:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:56,414 INFO L225 Difference]: With dead ends: 10206 [2024-11-22 01:44:56,414 INFO L226 Difference]: Without dead ends: 2455 [2024-11-22 01:44:56,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:56,435 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 3 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2495 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 [2024-11-22 01:44:56,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2495 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2024-11-22 01:44:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2024-11-22 01:44:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1918 states have (on average 1.5985401459854014) internal successors, (3066), 1996 states have internal predecessors, (3066), 381 states have call successors, (381), 114 states have call predecessors, (381), 155 states have return successors, (523), 368 states have call predecessors, (523), 377 states have call successors, (523) [2024-11-22 01:44:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3970 transitions. [2024-11-22 01:44:56,598 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3970 transitions. Word has length 276 [2024-11-22 01:44:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:56,599 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 3970 transitions. [2024-11-22 01:44:56,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-22 01:44:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3970 transitions. [2024-11-22 01:44:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-22 01:44:56,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:56,602 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] [2024-11-22 01:44:56,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:56,803 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 [2024-11-22 01:44:56,803 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:56,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash -57383641, now seen corresponding path program 1 times [2024-11-22 01:44:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475479772] [2024-11-22 01:44:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-22 01:44:57,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:57,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475479772] [2024-11-22 01:44:57,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475479772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:57,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134851488] [2024-11-22 01:44:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:57,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:57,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:57,125 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) [2024-11-22 01:44:57,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-22 01:44:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:57,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:44:57,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-22 01:44:57,521 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134851488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-22 01:44:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103707511] [2024-11-22 01:44:57,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:57,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:44:57,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:44:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:57,523 INFO L87 Difference]: Start difference. First operand 2455 states and 3970 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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) [2024-11-22 01:44:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:57,614 INFO L93 Difference]: Finished difference Result 4846 states and 7885 transitions. [2024-11-22 01:44:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:44:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 279 [2024-11-22 01:44:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:57,625 INFO L225 Difference]: With dead ends: 4846 [2024-11-22 01:44:57,625 INFO L226 Difference]: Without dead ends: 2475 [2024-11-22 01:44:57,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:57,632 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 0 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:57,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4223 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2024-11-22 01:44:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2469. [2024-11-22 01:44:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 1928 states have (on average 1.595435684647303) internal successors, (3076), 2008 states have internal predecessors, (3076), 381 states have call successors, (381), 114 states have call predecessors, (381), 159 states have return successors, (527), 370 states have call predecessors, (527), 377 states have call successors, (527) [2024-11-22 01:44:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3984 transitions. [2024-11-22 01:44:57,748 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3984 transitions. Word has length 279 [2024-11-22 01:44:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:57,749 INFO L471 AbstractCegarLoop]: Abstraction has 2469 states and 3984 transitions. [2024-11-22 01:44:57,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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) [2024-11-22 01:44:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3984 transitions. [2024-11-22 01:44:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-22 01:44:57,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:57,752 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:57,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-22 01:44:57,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-22 01:44:57,953 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:57,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1338171401, now seen corresponding path program 1 times [2024-11-22 01:44:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999465179] [2024-11-22 01:44:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-22 01:44:58,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:58,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999465179] [2024-11-22 01:44:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999465179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:58,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236194590] [2024-11-22 01:44:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:58,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:58,114 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:58,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-22 01:44:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:58,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:44:58,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-22 01:44:58,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:44:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-22 01:44:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236194590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:44:59,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:44:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 18 [2024-11-22 01:44:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167948155] [2024-11-22 01:44:59,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:44:59,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 01:44:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 01:44:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-22 01:44:59,429 INFO L87 Difference]: Start difference. First operand 2469 states and 3984 transitions. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2024-11-22 01:45:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:08,080 INFO L93 Difference]: Finished difference Result 12530 states and 20456 transitions. [2024-11-22 01:45:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-22 01:45:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) Word has length 285 [2024-11-22 01:45:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:08,116 INFO L225 Difference]: With dead ends: 12530 [2024-11-22 01:45:08,116 INFO L226 Difference]: Without dead ends: 9576 [2024-11-22 01:45:08,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 612 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6396 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2332, Invalid=14180, Unknown=0, NotChecked=0, Total=16512 [2024-11-22 01:45:08,134 INFO L432 NwaCegarLoop]: 814 mSDtfsCounter, 12191 mSDsluCounter, 7390 mSDsCounter, 0 mSdLazyCounter, 12995 mSolverCounterSat, 3897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12227 SdHoareTripleChecker+Valid, 8204 SdHoareTripleChecker+Invalid, 16892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3897 IncrementalHoareTripleChecker+Valid, 12995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:08,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12227 Valid, 8204 Invalid, 16892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3897 Valid, 12995 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-22 01:45:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2024-11-22 01:45:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 9113. [2024-11-22 01:45:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9113 states, 6910 states have (on average 1.5490593342981187) internal successors, (10704), 7256 states have internal predecessors, (10704), 1599 states have call successors, (1599), 468 states have call predecessors, (1599), 603 states have return successors, (2169), 1580 states have call predecessors, (2169), 1595 states have call successors, (2169) [2024-11-22 01:45:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 14472 transitions. [2024-11-22 01:45:08,580 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 14472 transitions. Word has length 285 [2024-11-22 01:45:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:08,581 INFO L471 AbstractCegarLoop]: Abstraction has 9113 states and 14472 transitions. [2024-11-22 01:45:08,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2024-11-22 01:45:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 14472 transitions. [2024-11-22 01:45:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-22 01:45:08,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:08,585 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:08,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-22 01:45:08,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-22 01:45:08,787 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:08,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1492923229, now seen corresponding path program 1 times [2024-11-22 01:45:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:08,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971796257] [2024-11-22 01:45:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-22 01:45:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971796257] [2024-11-22 01:45:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971796257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148796635] [2024-11-22 01:45:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:09,133 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:09,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-22 01:45:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:09,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 2101 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 01:45:09,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-22 01:45:09,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:45:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-22 01:45:10,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148796635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:45:10,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:45:10,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-22 01:45:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799588243] [2024-11-22 01:45:10,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:45:10,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 01:45:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 01:45:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-22 01:45:10,129 INFO L87 Difference]: Start difference. First operand 9113 states and 14472 transitions. Second operand has 23 states, 23 states have (on average 13.695652173913043) internal successors, (315), 19 states have internal predecessors, (315), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2024-11-22 01:45:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:16,595 INFO L93 Difference]: Finished difference Result 29542 states and 47571 transitions. [2024-11-22 01:45:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 01:45:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.695652173913043) internal successors, (315), 19 states have internal predecessors, (315), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) Word has length 235 [2024-11-22 01:45:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:16,792 INFO L225 Difference]: With dead ends: 29542 [2024-11-22 01:45:16,792 INFO L226 Difference]: Without dead ends: 20517 [2024-11-22 01:45:16,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 471 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 01:45:16,832 INFO L432 NwaCegarLoop]: 802 mSDtfsCounter, 8247 mSDsluCounter, 7351 mSDsCounter, 0 mSdLazyCounter, 14463 mSolverCounterSat, 2552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8247 SdHoareTripleChecker+Valid, 8153 SdHoareTripleChecker+Invalid, 17015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2552 IncrementalHoareTripleChecker+Valid, 14463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:16,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8247 Valid, 8153 Invalid, 17015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2552 Valid, 14463 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-22 01:45:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20517 states. [2024-11-22 01:45:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20517 to 19895. [2024-11-22 01:45:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19895 states, 14880 states have (on average 1.543481182795699) internal successors, (22967), 15647 states have internal predecessors, (22967), 3796 states have call successors, (3796), 908 states have call predecessors, (3796), 1218 states have return successors, (5249), 3803 states have call predecessors, (5249), 3792 states have call successors, (5249) [2024-11-22 01:45:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19895 states to 19895 states and 32012 transitions. [2024-11-22 01:45:18,088 INFO L78 Accepts]: Start accepts. Automaton has 19895 states and 32012 transitions. Word has length 235 [2024-11-22 01:45:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:18,089 INFO L471 AbstractCegarLoop]: Abstraction has 19895 states and 32012 transitions. [2024-11-22 01:45:18,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.695652173913043) internal successors, (315), 19 states have internal predecessors, (315), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2024-11-22 01:45:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 19895 states and 32012 transitions. [2024-11-22 01:45:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-22 01:45:18,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:18,096 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:18,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-22 01:45:18,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:18,298 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:18,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1724617208, now seen corresponding path program 1 times [2024-11-22 01:45:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329256849] [2024-11-22 01:45:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-22 01:45:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329256849] [2024-11-22 01:45:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329256849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:18,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812574655] [2024-11-22 01:45:18,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:18,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:18,463 INFO L87 Difference]: Start difference. First operand 19895 states and 32012 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-22 01:45:20,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:20,006 INFO L93 Difference]: Finished difference Result 39810 states and 64397 transitions. [2024-11-22 01:45:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:45:20,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 239 [2024-11-22 01:45:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:20,137 INFO L225 Difference]: With dead ends: 39810 [2024-11-22 01:45:20,137 INFO L226 Difference]: Without dead ends: 20055 [2024-11-22 01:45:20,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:20,227 INFO L432 NwaCegarLoop]: 842 mSDtfsCounter, 0 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:20,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4179 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20055 states. [2024-11-22 01:45:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20055 to 20007. [2024-11-22 01:45:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20007 states, 14992 states have (on average 1.537286552828175) internal successors, (23047), 15731 states have internal predecessors, (23047), 3768 states have call successors, (3768), 908 states have call predecessors, (3768), 1246 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2024-11-22 01:45:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20007 states to 20007 states and 32156 transitions. [2024-11-22 01:45:21,475 INFO L78 Accepts]: Start accepts. Automaton has 20007 states and 32156 transitions. Word has length 239 [2024-11-22 01:45:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:21,475 INFO L471 AbstractCegarLoop]: Abstraction has 20007 states and 32156 transitions. [2024-11-22 01:45:21,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-22 01:45:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 20007 states and 32156 transitions. [2024-11-22 01:45:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-22 01:45:21,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:21,482 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:21,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-22 01:45:21,482 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:21,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -900447629, now seen corresponding path program 1 times [2024-11-22 01:45:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:21,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158351208] [2024-11-22 01:45:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-22 01:45:21,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:21,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158351208] [2024-11-22 01:45:21,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158351208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:21,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940338264] [2024-11-22 01:45:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:21,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:21,781 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:21,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-22 01:45:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:22,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:45:22,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-22 01:45:22,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:22,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940338264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:22,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:22,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-22 01:45:22,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877498602] [2024-11-22 01:45:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:22,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:22,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:45:22,196 INFO L87 Difference]: Start difference. First operand 20007 states and 32156 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 01:45:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:23,673 INFO L93 Difference]: Finished difference Result 40590 states and 65984 transitions. [2024-11-22 01:45:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 315 [2024-11-22 01:45:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:23,772 INFO L225 Difference]: With dead ends: 40590 [2024-11-22 01:45:23,773 INFO L226 Difference]: Without dead ends: 20727 [2024-11-22 01:45:23,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:45:23,839 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 144 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:23,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2329 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20727 states. [2024-11-22 01:45:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20727 to 20631. [2024-11-22 01:45:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20631 states, 15600 states have (on average 1.5522435897435898) internal successors, (24215), 16339 states have internal predecessors, (24215), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2024-11-22 01:45:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20631 states to 20631 states and 33324 transitions. [2024-11-22 01:45:25,396 INFO L78 Accepts]: Start accepts. Automaton has 20631 states and 33324 transitions. Word has length 315 [2024-11-22 01:45:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:25,399 INFO L471 AbstractCegarLoop]: Abstraction has 20631 states and 33324 transitions. [2024-11-22 01:45:25,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-22 01:45:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 20631 states and 33324 transitions. [2024-11-22 01:45:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-22 01:45:25,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:25,407 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:25,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:25,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:25,609 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:25,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1403197254, now seen corresponding path program 1 times [2024-11-22 01:45:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945087835] [2024-11-22 01:45:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-22 01:45:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945087835] [2024-11-22 01:45:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945087835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092630] [2024-11-22 01:45:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:25,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:25,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:25,870 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-22 01:45:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:26,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:45:26,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 01:45:26,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:26,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:26,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-22 01:45:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959070902] [2024-11-22 01:45:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:26,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:45:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:45:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:45:26,346 INFO L87 Difference]: Start difference. First operand 20631 states and 33324 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)