./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product21.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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:56:09,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:56:09,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:56:09,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:56:09,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:56:09,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:56:09,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:56:09,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:56:09,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:56:09,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:56:09,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:56:09,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:56:09,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:56:09,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:56:09,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:56:09,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:56:09,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:56:09,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:56:09,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:56:09,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:56:09,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:56:09,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:56:09,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:56:09,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:56:09,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:56:09,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:56:09,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:56:09,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:56:09,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:56:09,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:56:09,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:56:09,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:56:09,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:56:09,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:56:09,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:56:09,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:56:09,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:56:09,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:56:09,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:56:09,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:56:09,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:56:09,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:56:09,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2024-11-18 13:56:09,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:56:09,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:56:09,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:56:09,870 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:56:09,870 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:56:09,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2024-11-18 13:56:11,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:56:11,391 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:56:11,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2024-11-18 13:56:11,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f364e0325/3d8d0b178f7846c1aa1716f3988d975d/FLAGfb6f91ff3 [2024-11-18 13:56:11,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f364e0325/3d8d0b178f7846c1aa1716f3988d975d [2024-11-18 13:56:11,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:56:11,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:56:11,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:56:11,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:56:11,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:56:11,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:11" (1/1) ... [2024-11-18 13:56:11,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad006b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:11, skipping insertion in model container [2024-11-18 13:56:11,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:11" (1/1) ... [2024-11-18 13:56:11,499 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:56:11,876 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_spec13_product21.cil.c[58922,58935] [2024-11-18 13:56:11,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:56:11,995 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:56:12,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-18 13:56:12,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-11-18 13:56:12,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2024-11-18 13:56:12,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2024-11-18 13:56:12,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2024-11-18 13:56:12,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2024-11-18 13:56:12,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2024-11-18 13:56:12,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2024-11-18 13:56:12,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2024-11-18 13:56:12,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2024-11-18 13:56:12,059 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_spec13_product21.cil.c[58922,58935] [2024-11-18 13:56:12,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:56:12,090 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:56:12,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12 WrapperNode [2024-11-18 13:56:12,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:56:12,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:56:12,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:56:12,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:56:12,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,146 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 817 [2024-11-18 13:56:12,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:56:12,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:56:12,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:56:12,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:56:12,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,194 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]. [2024-11-18 13:56:12,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:56:12,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:56:12,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:56:12,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:56:12,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (1/1) ... [2024-11-18 13:56:12,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:56:12,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:12,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:56:12,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:56:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-18 13:56:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-18 13:56:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:56:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 13:56:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 13:56:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 13:56:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 13:56:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-18 13:56:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 13:56:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 13:56:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 13:56:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 13:56:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 13:56:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 13:56:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 13:56:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 13:56:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 13:56:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 13:56:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 13:56:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 13:56:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 13:56:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 13:56:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 13:56:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 13:56:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 13:56:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 13:56:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 13:56:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:56:12,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:56:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 13:56:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 13:56:12,524 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:56:12,526 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:56:13,511 INFO L? ?]: Removed 460 outVars from TransFormulas that were not future-live. [2024-11-18 13:56:13,511 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:56:13,556 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:56:13,557 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 13:56:13,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:13 BoogieIcfgContainer [2024-11-18 13:56:13,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:56:13,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:56:13,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:56:13,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:56:13,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:56:11" (1/3) ... [2024-11-18 13:56:13,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515b88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:13, skipping insertion in model container [2024-11-18 13:56:13,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:12" (2/3) ... [2024-11-18 13:56:13,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515b88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:13, skipping insertion in model container [2024-11-18 13:56:13,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:13" (3/3) ... [2024-11-18 13:56:13,566 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2024-11-18 13:56:13,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:56:13,584 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:56:13,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:56:13,696 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;@4790f595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:56:13,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:56:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 13:56:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 13:56:13,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:13,769 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:13,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:13,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -525274672, now seen corresponding path program 1 times [2024-11-18 13:56:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350111448] [2024-11-18 13:56:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350111448] [2024-11-18 13:56:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350111448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937451969] [2024-11-18 13:56:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:14,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:14,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:14,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:14,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:56:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:14,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:56:14,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:56:14,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937451969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:14,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-18 13:56:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676661991] [2024-11-18 13:56:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:14,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:56:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:56:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:15,030 INFO L87 Difference]: Start difference. First operand has 592 states, 465 states have (on average 1.6924731182795698) internal successors, (787), 483 states have internal predecessors, (787), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:15,182 INFO L93 Difference]: Finished difference Result 1162 states and 1957 transitions. [2024-11-18 13:56:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:56:15,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-18 13:56:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:15,221 INFO L225 Difference]: With dead ends: 1162 [2024-11-18 13:56:15,222 INFO L226 Difference]: Without dead ends: 582 [2024-11-18 13:56:15,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:15,246 INFO L432 NwaCegarLoop]: 975 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, 975 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:15,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-18 13:56:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-11-18 13:56:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 458 states have (on average 1.6746724890829694) internal successors, (767), 474 states have internal predecessors, (767), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:56:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 964 transitions. [2024-11-18 13:56:15,408 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 964 transitions. Word has length 114 [2024-11-18 13:56:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:15,409 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 964 transitions. [2024-11-18 13:56:15,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 964 transitions. [2024-11-18 13:56:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 13:56:15,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:15,426 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:15,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:15,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:56:15,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:15,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash 281689968, now seen corresponding path program 1 times [2024-11-18 13:56:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546231711] [2024-11-18 13:56:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546231711] [2024-11-18 13:56:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546231711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579943696] [2024-11-18 13:56:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:15,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:15,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:15,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:56:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:16,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:16,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:16,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579943696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:16,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:16,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 13:56:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109003343] [2024-11-18 13:56:16,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:16,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:56:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:56:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:16,163 INFO L87 Difference]: Start difference. First operand 582 states and 964 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:16,239 INFO L93 Difference]: Finished difference Result 1701 states and 2863 transitions. [2024-11-18 13:56:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:56:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-18 13:56:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:16,247 INFO L225 Difference]: With dead ends: 1701 [2024-11-18 13:56:16,247 INFO L226 Difference]: Without dead ends: 1139 [2024-11-18 13:56:16,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:16,250 INFO L432 NwaCegarLoop]: 1032 mSDtfsCounter, 958 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:16,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1960 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-18 13:56:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1130. [2024-11-18 13:56:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 896 states have (on average 1.6852678571428572) internal successors, (1510), 925 states have internal predecessors, (1510), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2024-11-18 13:56:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1894 transitions. [2024-11-18 13:56:16,297 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1894 transitions. Word has length 114 [2024-11-18 13:56:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:16,297 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1894 transitions. [2024-11-18 13:56:16,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1894 transitions. [2024-11-18 13:56:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 13:56:16,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:16,301 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:16,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:56:16,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 13:56:16,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:16,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 6930354, now seen corresponding path program 1 times [2024-11-18 13:56:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229359053] [2024-11-18 13:56:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229359053] [2024-11-18 13:56:16,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229359053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396124036] [2024-11-18 13:56:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:16,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:16,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:16,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:56:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:16,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:16,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:16,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:16,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396124036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:16,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:16,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 13:56:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625846793] [2024-11-18 13:56:16,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:16,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:16,997 INFO L87 Difference]: Start difference. First operand 1130 states and 1894 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:17,198 INFO L93 Difference]: Finished difference Result 2261 states and 3796 transitions. [2024-11-18 13:56:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-11-18 13:56:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:17,207 INFO L225 Difference]: With dead ends: 2261 [2024-11-18 13:56:17,207 INFO L226 Difference]: Without dead ends: 1139 [2024-11-18 13:56:17,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:17,216 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 17 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:17,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2845 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-18 13:56:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2024-11-18 13:56:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 904 states have (on average 1.6858407079646018) internal successors, (1524), 933 states have internal predecessors, (1524), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2024-11-18 13:56:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1908 transitions. [2024-11-18 13:56:17,290 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1908 transitions. Word has length 114 [2024-11-18 13:56:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:17,290 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1908 transitions. [2024-11-18 13:56:17,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1908 transitions. [2024-11-18 13:56:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 13:56:17,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:17,297 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:17,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:56:17,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:17,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:17,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2024156388, now seen corresponding path program 1 times [2024-11-18 13:56:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:17,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156432091] [2024-11-18 13:56:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156432091] [2024-11-18 13:56:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156432091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958713628] [2024-11-18 13:56:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:17,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:17,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:17,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:17,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:56:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:17,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:17,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:17,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958713628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:17,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:17,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:56:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519439167] [2024-11-18 13:56:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:17,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:17,927 INFO L87 Difference]: Start difference. First operand 1139 states and 1908 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:18,167 INFO L93 Difference]: Finished difference Result 2340 states and 3934 transitions. [2024-11-18 13:56:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:18,167 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-11-18 13:56:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:18,174 INFO L225 Difference]: With dead ends: 2340 [2024-11-18 13:56:18,174 INFO L226 Difference]: Without dead ends: 1211 [2024-11-18 13:56:18,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:18,181 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 122 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:18,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2740 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:56:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-18 13:56:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1184. [2024-11-18 13:56:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 948 states have (on average 1.6962025316455696) internal successors, (1608), 977 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2024-11-18 13:56:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1992 transitions. [2024-11-18 13:56:18,225 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1992 transitions. Word has length 116 [2024-11-18 13:56:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:18,226 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1992 transitions. [2024-11-18 13:56:18,226 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1992 transitions. [2024-11-18 13:56:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 13:56:18,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:18,230 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:18,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:18,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:18,431 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:18,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1811366008, now seen corresponding path program 1 times [2024-11-18 13:56:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073052417] [2024-11-18 13:56:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:18,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073052417] [2024-11-18 13:56:18,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073052417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:18,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711138333] [2024-11-18 13:56:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:18,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:18,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:18,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:56:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:18,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:18,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:18,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711138333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:18,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777488148] [2024-11-18 13:56:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:18,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:18,871 INFO L87 Difference]: Start difference. First operand 1184 states and 1992 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:18,996 INFO L93 Difference]: Finished difference Result 2394 states and 4027 transitions. [2024-11-18 13:56:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2024-11-18 13:56:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:19,011 INFO L225 Difference]: With dead ends: 2394 [2024-11-18 13:56:19,011 INFO L226 Difference]: Without dead ends: 1220 [2024-11-18 13:56:19,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:19,023 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 89 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5614 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:19,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5614 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2024-11-18 13:56:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1197. [2024-11-18 13:56:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2024-11-18 13:56:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2024-11-18 13:56:19,098 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 118 [2024-11-18 13:56:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:19,099 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2024-11-18 13:56:19,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2024-11-18 13:56:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 13:56:19,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:19,107 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:19,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:19,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:19,308 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:19,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 127341011, now seen corresponding path program 1 times [2024-11-18 13:56:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:19,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404153203] [2024-11-18 13:56:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404153203] [2024-11-18 13:56:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404153203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:19,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008469693] [2024-11-18 13:56:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:19,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:19,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:56:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:19,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:19,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:19,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008469693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:19,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:19,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113068778] [2024-11-18 13:56:19,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:19,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:19,781 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:19,879 INFO L93 Difference]: Finished difference Result 2414 states and 4058 transitions. [2024-11-18 13:56:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:19,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-11-18 13:56:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:19,886 INFO L225 Difference]: With dead ends: 2414 [2024-11-18 13:56:19,886 INFO L226 Difference]: Without dead ends: 1229 [2024-11-18 13:56:19,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:19,896 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 100 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:19,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5602 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-18 13:56:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1197. [2024-11-18 13:56:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 958 states have (on average 1.6941544885177453) internal successors, (1623), 989 states have internal predecessors, (1623), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2024-11-18 13:56:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2013 transitions. [2024-11-18 13:56:19,948 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2013 transitions. Word has length 119 [2024-11-18 13:56:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:19,949 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 2013 transitions. [2024-11-18 13:56:19,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2013 transitions. [2024-11-18 13:56:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 13:56:19,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:19,952 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:19,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:56:20,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:20,154 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:20,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1740207191, now seen corresponding path program 1 times [2024-11-18 13:56:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724090333] [2024-11-18 13:56:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:20,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724090333] [2024-11-18 13:56:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724090333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841724462] [2024-11-18 13:56:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:20,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:20,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:20,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:56:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:20,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:20,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:20,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841724462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:20,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:20,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:20,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427586300] [2024-11-18 13:56:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:20,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:20,476 INFO L87 Difference]: Start difference. First operand 1197 states and 2013 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:20,547 INFO L93 Difference]: Finished difference Result 2399 states and 4035 transitions. [2024-11-18 13:56:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:20,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-18 13:56:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:20,554 INFO L225 Difference]: With dead ends: 2399 [2024-11-18 13:56:20,554 INFO L226 Difference]: Without dead ends: 1208 [2024-11-18 13:56:20,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:20,560 INFO L432 NwaCegarLoop]: 952 mSDtfsCounter, 12 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:20,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2847 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-11-18 13:56:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2024-11-18 13:56:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2024-11-18 13:56:20,639 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 119 [2024-11-18 13:56:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:20,639 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2024-11-18 13:56:20,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2024-11-18 13:56:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 13:56:20,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:20,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:20,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:20,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:20,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:20,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -107080124, now seen corresponding path program 1 times [2024-11-18 13:56:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501000095] [2024-11-18 13:56:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:20,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:21,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501000095] [2024-11-18 13:56:21,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501000095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738778929] [2024-11-18 13:56:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:21,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:21,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:56:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:21,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:21,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:21,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:21,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738778929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:21,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:21,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562098983] [2024-11-18 13:56:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:21,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:21,379 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:21,467 INFO L93 Difference]: Finished difference Result 2423 states and 4053 transitions. [2024-11-18 13:56:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-18 13:56:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:21,473 INFO L225 Difference]: With dead ends: 2423 [2024-11-18 13:56:21,474 INFO L226 Difference]: Without dead ends: 1240 [2024-11-18 13:56:21,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:21,479 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 111 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:21,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5590 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-18 13:56:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1206. [2024-11-18 13:56:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2024-11-18 13:56:21,509 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2024-11-18 13:56:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:21,509 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2024-11-18 13:56:21,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2024-11-18 13:56:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 13:56:21,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:21,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:21,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:56:21,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 13:56:21,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:21,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash -35089662, now seen corresponding path program 1 times [2024-11-18 13:56:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:21,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538036875] [2024-11-18 13:56:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538036875] [2024-11-18 13:56:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538036875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105402691] [2024-11-18 13:56:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:21,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:21,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:56:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:22,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:22,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:22,182 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105402691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715128346] [2024-11-18 13:56:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:22,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:22,184 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:22,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:22,313 INFO L93 Difference]: Finished difference Result 2426 states and 4057 transitions. [2024-11-18 13:56:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:22,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-18 13:56:22,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:22,319 INFO L225 Difference]: With dead ends: 2426 [2024-11-18 13:56:22,319 INFO L226 Difference]: Without dead ends: 1243 [2024-11-18 13:56:22,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:22,323 INFO L432 NwaCegarLoop]: 940 mSDtfsCounter, 95 mSDsluCounter, 5543 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:22,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6483 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-11-18 13:56:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1206. [2024-11-18 13:56:22,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2024-11-18 13:56:22,350 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 120 [2024-11-18 13:56:22,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:22,350 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2024-11-18 13:56:22,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2024-11-18 13:56:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 13:56:22,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:22,353 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:22,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:56:22,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:22,554 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:22,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash 996880591, now seen corresponding path program 1 times [2024-11-18 13:56:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364967393] [2024-11-18 13:56:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:22,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364967393] [2024-11-18 13:56:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364967393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919403511] [2024-11-18 13:56:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:22,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:22,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:22,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:22,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:56:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:22,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:22,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:22,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:22,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919403511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:22,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:22,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:22,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522017067] [2024-11-18 13:56:22,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:22,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:22,999 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:23,192 INFO L93 Difference]: Finished difference Result 2426 states and 4057 transitions. [2024-11-18 13:56:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2024-11-18 13:56:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:23,199 INFO L225 Difference]: With dead ends: 2426 [2024-11-18 13:56:23,199 INFO L226 Difference]: Without dead ends: 1243 [2024-11-18 13:56:23,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:23,204 INFO L432 NwaCegarLoop]: 941 mSDtfsCounter, 105 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:23,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6478 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-11-18 13:56:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1206. [2024-11-18 13:56:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2024-11-18 13:56:23,273 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 121 [2024-11-18 13:56:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:23,273 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2024-11-18 13:56:23,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2024-11-18 13:56:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 13:56:23,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:23,277 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:23,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:23,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 13:56:23,478 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:23,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1842820803, now seen corresponding path program 1 times [2024-11-18 13:56:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239452572] [2024-11-18 13:56:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239452572] [2024-11-18 13:56:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239452572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116989119] [2024-11-18 13:56:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:23,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:23,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:56:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:23,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:23,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:23,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116989119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:23,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152303976] [2024-11-18 13:56:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:23,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:23,944 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:24,086 INFO L93 Difference]: Finished difference Result 2417 states and 4042 transitions. [2024-11-18 13:56:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2024-11-18 13:56:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:24,094 INFO L225 Difference]: With dead ends: 2417 [2024-11-18 13:56:24,094 INFO L226 Difference]: Without dead ends: 1234 [2024-11-18 13:56:24,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:24,099 INFO L432 NwaCegarLoop]: 941 mSDtfsCounter, 115 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:24,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6466 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-11-18 13:56:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1206. [2024-11-18 13:56:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6853002070393375) internal successors, (1628), 997 states have internal predecessors, (1628), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2017 transitions. [2024-11-18 13:56:24,133 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2017 transitions. Word has length 122 [2024-11-18 13:56:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:24,133 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2017 transitions. [2024-11-18 13:56:24,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2017 transitions. [2024-11-18 13:56:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 13:56:24,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:24,137 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:24,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:24,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 13:56:24,337 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:24,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1459442657, now seen corresponding path program 1 times [2024-11-18 13:56:24,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:24,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977866606] [2024-11-18 13:56:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:24,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:24,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977866606] [2024-11-18 13:56:24,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977866606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:24,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23032622] [2024-11-18 13:56:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:24,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:24,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:24,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:24,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:56:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:24,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:24,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:56:24,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23032622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:24,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108404249] [2024-11-18 13:56:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:24,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:24,649 INFO L87 Difference]: Start difference. First operand 1206 states and 2017 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:24,735 INFO L93 Difference]: Finished difference Result 2378 states and 3986 transitions. [2024-11-18 13:56:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:24,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-18 13:56:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:24,741 INFO L225 Difference]: With dead ends: 2378 [2024-11-18 13:56:24,741 INFO L226 Difference]: Without dead ends: 1206 [2024-11-18 13:56:24,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:24,745 INFO L432 NwaCegarLoop]: 949 mSDtfsCounter, 20 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:24,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2841 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2024-11-18 13:56:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2024-11-18 13:56:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 966 states have (on average 1.6801242236024845) internal successors, (1623), 997 states have internal predecessors, (1623), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2024-11-18 13:56:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2012 transitions. [2024-11-18 13:56:24,787 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2012 transitions. Word has length 122 [2024-11-18 13:56:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:24,787 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 2012 transitions. [2024-11-18 13:56:24,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2012 transitions. [2024-11-18 13:56:24,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 13:56:24,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:24,790 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:24,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:24,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 13:56:24,991 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:24,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash -563421386, now seen corresponding path program 1 times [2024-11-18 13:56:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068576811] [2024-11-18 13:56:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:25,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:25,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068576811] [2024-11-18 13:56:25,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068576811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:25,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109993734] [2024-11-18 13:56:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:25,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:25,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:25,057 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:25,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:56:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:25,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:25,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:56:25,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109993734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964305500] [2024-11-18 13:56:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:25,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:25,311 INFO L87 Difference]: Start difference. First operand 1206 states and 2012 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:25,466 INFO L93 Difference]: Finished difference Result 2416 states and 4040 transitions. [2024-11-18 13:56:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-18 13:56:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:25,473 INFO L225 Difference]: With dead ends: 2416 [2024-11-18 13:56:25,473 INFO L226 Difference]: Without dead ends: 1302 [2024-11-18 13:56:25,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:25,478 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 171 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:25,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2713 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-18 13:56:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1251. [2024-11-18 13:56:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1010 states have (on average 1.69009900990099) internal successors, (1707), 1041 states have internal predecessors, (1707), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-18 13:56:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 2095 transitions. [2024-11-18 13:56:25,510 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 2095 transitions. Word has length 123 [2024-11-18 13:56:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:25,512 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 2095 transitions. [2024-11-18 13:56:25,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 2095 transitions. [2024-11-18 13:56:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 13:56:25,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:25,515 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:25,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 13:56:25,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 13:56:25,716 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:25,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1187945535, now seen corresponding path program 1 times [2024-11-18 13:56:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:25,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853612772] [2024-11-18 13:56:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:25,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853612772] [2024-11-18 13:56:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853612772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200591835] [2024-11-18 13:56:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:25,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:25,779 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:25,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:56:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:26,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:26,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:26,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200591835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:26,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:56:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607672323] [2024-11-18 13:56:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:26,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:26,055 INFO L87 Difference]: Start difference. First operand 1251 states and 2095 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:26,138 INFO L93 Difference]: Finished difference Result 2411 states and 4029 transitions. [2024-11-18 13:56:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-11-18 13:56:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:26,146 INFO L225 Difference]: With dead ends: 2411 [2024-11-18 13:56:26,146 INFO L226 Difference]: Without dead ends: 1297 [2024-11-18 13:56:26,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:26,151 INFO L432 NwaCegarLoop]: 952 mSDtfsCounter, 89 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:26,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5623 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2024-11-18 13:56:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1264. [2024-11-18 13:56:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2024-11-18 13:56:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2024-11-18 13:56:26,191 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 124 [2024-11-18 13:56:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:26,192 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2024-11-18 13:56:26,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2024-11-18 13:56:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 13:56:26,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:26,195 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:26,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 13:56:26,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:26,400 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:26,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2026594256, now seen corresponding path program 1 times [2024-11-18 13:56:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114913634] [2024-11-18 13:56:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114913634] [2024-11-18 13:56:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114913634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457244971] [2024-11-18 13:56:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:26,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:26,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:26,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:26,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:56:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:26,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:26,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:26,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457244971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:56:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684865135] [2024-11-18 13:56:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:26,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:26,765 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:26,851 INFO L93 Difference]: Finished difference Result 2420 states and 4043 transitions. [2024-11-18 13:56:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-18 13:56:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:26,859 INFO L225 Difference]: With dead ends: 2420 [2024-11-18 13:56:26,859 INFO L226 Difference]: Without dead ends: 1306 [2024-11-18 13:56:26,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:26,863 INFO L432 NwaCegarLoop]: 952 mSDtfsCounter, 100 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:26,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5611 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2024-11-18 13:56:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1264. [2024-11-18 13:56:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2024-11-18 13:56:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2024-11-18 13:56:26,892 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2024-11-18 13:56:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:26,892 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2024-11-18 13:56:26,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2024-11-18 13:56:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 13:56:26,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:26,896 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:26,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 13:56:27,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 13:56:27,097 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:27,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 289412016, now seen corresponding path program 1 times [2024-11-18 13:56:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369177951] [2024-11-18 13:56:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369177951] [2024-11-18 13:56:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369177951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679103359] [2024-11-18 13:56:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:27,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:27,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:56:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:27,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:27,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:27,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679103359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:27,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:27,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:56:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421699237] [2024-11-18 13:56:27,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:27,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:27,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:27,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:27,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:27,439 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:27,570 INFO L93 Difference]: Finished difference Result 2423 states and 4046 transitions. [2024-11-18 13:56:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-18 13:56:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:27,577 INFO L225 Difference]: With dead ends: 2423 [2024-11-18 13:56:27,577 INFO L226 Difference]: Without dead ends: 1309 [2024-11-18 13:56:27,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:27,580 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 96 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:27,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6500 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2024-11-18 13:56:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1264. [2024-11-18 13:56:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.688235294117647) internal successors, (1722), 1053 states have internal predecessors, (1722), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2024-11-18 13:56:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2114 transitions. [2024-11-18 13:56:27,613 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2114 transitions. Word has length 125 [2024-11-18 13:56:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:27,614 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2114 transitions. [2024-11-18 13:56:27,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2114 transitions. [2024-11-18 13:56:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 13:56:27,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:27,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:27,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 13:56:27,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 13:56:27,818 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:27,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1729460634, now seen corresponding path program 1 times [2024-11-18 13:56:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448612763] [2024-11-18 13:56:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448612763] [2024-11-18 13:56:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448612763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:27,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041750291] [2024-11-18 13:56:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:27,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:27,916 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:27,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:56:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:28,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:28,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:56:28,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041750291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:28,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044595830] [2024-11-18 13:56:28,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:28,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:28,154 INFO L87 Difference]: Start difference. First operand 1264 states and 2114 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:28,192 INFO L93 Difference]: Finished difference Result 2454 states and 4109 transitions. [2024-11-18 13:56:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:28,193 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-18 13:56:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:28,198 INFO L225 Difference]: With dead ends: 2454 [2024-11-18 13:56:28,198 INFO L226 Difference]: Without dead ends: 1264 [2024-11-18 13:56:28,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:28,200 INFO L432 NwaCegarLoop]: 953 mSDtfsCounter, 2 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:28,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2850 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2024-11-18 13:56:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2024-11-18 13:56:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2024-11-18 13:56:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2024-11-18 13:56:28,223 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 125 [2024-11-18 13:56:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:28,224 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2024-11-18 13:56:28,224 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2024-11-18 13:56:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 13:56:28,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:28,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:28,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:56:28,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 13:56:28,428 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:28,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash 978607357, now seen corresponding path program 1 times [2024-11-18 13:56:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102228221] [2024-11-18 13:56:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:28,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:28,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102228221] [2024-11-18 13:56:28,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102228221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:28,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243184021] [2024-11-18 13:56:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:28,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:28,485 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:28,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:56:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:28,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:28,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:28,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243184021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:28,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:28,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:56:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669265035] [2024-11-18 13:56:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:28,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:28,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:28,765 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:28,891 INFO L93 Difference]: Finished difference Result 2414 states and 4029 transitions. [2024-11-18 13:56:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:28,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-11-18 13:56:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:28,902 INFO L225 Difference]: With dead ends: 2414 [2024-11-18 13:56:28,902 INFO L226 Difference]: Without dead ends: 1300 [2024-11-18 13:56:28,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:28,906 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 106 mSDsluCounter, 5531 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:28,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6470 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-11-18 13:56:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1264. [2024-11-18 13:56:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.6852941176470588) internal successors, (1719), 1053 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2024-11-18 13:56:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2111 transitions. [2024-11-18 13:56:28,933 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2111 transitions. Word has length 126 [2024-11-18 13:56:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:28,933 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2111 transitions. [2024-11-18 13:56:28,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2111 transitions. [2024-11-18 13:56:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 13:56:28,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:28,936 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:28,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 13:56:29,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 13:56:29,137 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:29,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1328556693, now seen corresponding path program 1 times [2024-11-18 13:56:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:29,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603678486] [2024-11-18 13:56:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:29,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603678486] [2024-11-18 13:56:29,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603678486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:29,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388052313] [2024-11-18 13:56:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:29,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:29,195 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:29,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:56:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:29,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:56:29,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:56:29,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388052313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 13:56:29,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501123776] [2024-11-18 13:56:29,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:29,488 INFO L87 Difference]: Start difference. First operand 1264 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:29,553 INFO L93 Difference]: Finished difference Result 2505 states and 4198 transitions. [2024-11-18 13:56:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:29,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-18 13:56:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:29,561 INFO L225 Difference]: With dead ends: 2505 [2024-11-18 13:56:29,561 INFO L226 Difference]: Without dead ends: 1229 [2024-11-18 13:56:29,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:56:29,566 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 7 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:29,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2842 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-18 13:56:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2024-11-18 13:56:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 988 states have (on average 1.6720647773279351) internal successors, (1652), 1019 states have internal predecessors, (1652), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-18 13:56:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2040 transitions. [2024-11-18 13:56:29,603 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2040 transitions. Word has length 127 [2024-11-18 13:56:29,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:29,604 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 2040 transitions. [2024-11-18 13:56:29,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2040 transitions. [2024-11-18 13:56:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 13:56:29,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:29,607 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] [2024-11-18 13:56:29,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:29,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:29,808 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:29,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1824623296, now seen corresponding path program 1 times [2024-11-18 13:56:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:29,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710507642] [2024-11-18 13:56:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:29,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710507642] [2024-11-18 13:56:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710507642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119444476] [2024-11-18 13:56:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:29,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:29,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:29,945 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:29,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:56:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:56:30,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:30,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119444476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-18 13:56:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737588349] [2024-11-18 13:56:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:30,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:30,221 INFO L87 Difference]: Start difference. First operand 1229 states and 2040 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:30,296 INFO L93 Difference]: Finished difference Result 2464 states and 4088 transitions. [2024-11-18 13:56:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:30,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-11-18 13:56:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:30,303 INFO L225 Difference]: With dead ends: 2464 [2024-11-18 13:56:30,303 INFO L226 Difference]: Without dead ends: 1252 [2024-11-18 13:56:30,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:30,306 INFO L432 NwaCegarLoop]: 960 mSDtfsCounter, 122 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5621 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:30,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5621 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2024-11-18 13:56:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1222. [2024-11-18 13:56:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 981 states have (on average 1.6676860346585116) internal successors, (1636), 1012 states have internal predecessors, (1636), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-18 13:56:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2024 transitions. [2024-11-18 13:56:30,333 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2024 transitions. Word has length 128 [2024-11-18 13:56:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:30,333 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 2024 transitions. [2024-11-18 13:56:30,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2024 transitions. [2024-11-18 13:56:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 13:56:30,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:30,336 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:30,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 13:56:30,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:30,537 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:30,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1668543117, now seen corresponding path program 1 times [2024-11-18 13:56:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734902679] [2024-11-18 13:56:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:30,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734902679] [2024-11-18 13:56:30,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734902679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:30,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:56:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11660398] [2024-11-18 13:56:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:30,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:30,631 INFO L87 Difference]: Start difference. First operand 1222 states and 2024 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:30,708 INFO L93 Difference]: Finished difference Result 2368 states and 3936 transitions. [2024-11-18 13:56:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:30,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2024-11-18 13:56:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:30,714 INFO L225 Difference]: With dead ends: 2368 [2024-11-18 13:56:30,714 INFO L226 Difference]: Without dead ends: 1254 [2024-11-18 13:56:30,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:30,718 INFO L432 NwaCegarLoop]: 948 mSDtfsCounter, 126 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5565 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:30,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5565 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-18 13:56:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1222. [2024-11-18 13:56:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 981 states have (on average 1.6676860346585116) internal successors, (1636), 1012 states have internal predecessors, (1636), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2024-11-18 13:56:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2024 transitions. [2024-11-18 13:56:30,771 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2024 transitions. Word has length 129 [2024-11-18 13:56:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:30,771 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 2024 transitions. [2024-11-18 13:56:30,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:56:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2024 transitions. [2024-11-18 13:56:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 13:56:30,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:30,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:30,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 13:56:30,775 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:30,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1029484769, now seen corresponding path program 1 times [2024-11-18 13:56:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182615384] [2024-11-18 13:56:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182615384] [2024-11-18 13:56:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182615384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937812157] [2024-11-18 13:56:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:30,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:30,828 INFO L87 Difference]: Start difference. First operand 1222 states and 2024 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:30,869 INFO L93 Difference]: Finished difference Result 2399 states and 3991 transitions. [2024-11-18 13:56:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:30,870 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-18 13:56:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:30,875 INFO L225 Difference]: With dead ends: 2399 [2024-11-18 13:56:30,875 INFO L226 Difference]: Without dead ends: 1180 [2024-11-18 13:56:30,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:56:30,878 INFO L432 NwaCegarLoop]: 949 mSDtfsCounter, 8 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:30,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2841 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2024-11-18 13:56:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2024-11-18 13:56:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 942 states have (on average 1.6592356687898089) internal successors, (1563), 971 states have internal predecessors, (1563), 188 states have call successors, (188), 51 states have call predecessors, (188), 49 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2024-11-18 13:56:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1947 transitions. [2024-11-18 13:56:30,899 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1947 transitions. Word has length 129 [2024-11-18 13:56:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:30,899 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1947 transitions. [2024-11-18 13:56:30,899 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:56:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1947 transitions. [2024-11-18 13:56:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 13:56:30,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:30,902 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:30,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 13:56:30,902 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:30,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash -833986604, now seen corresponding path program 1 times [2024-11-18 13:56:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:30,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848402319] [2024-11-18 13:56:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848402319] [2024-11-18 13:56:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848402319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357585643] [2024-11-18 13:56:30,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:30,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:30,969 INFO L87 Difference]: Start difference. First operand 1180 states and 1947 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:31,487 INFO L93 Difference]: Finished difference Result 3359 states and 5684 transitions. [2024-11-18 13:56:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:31,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2024-11-18 13:56:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:31,497 INFO L225 Difference]: With dead ends: 3359 [2024-11-18 13:56:31,498 INFO L226 Difference]: Without dead ends: 2249 [2024-11-18 13:56:31,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:31,503 INFO L432 NwaCegarLoop]: 1848 mSDtfsCounter, 1827 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:31,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 3302 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:56:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2024-11-18 13:56:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2245. [2024-11-18 13:56:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 1792 states have (on average 1.6568080357142858) internal successors, (2969), 1848 states have internal predecessors, (2969), 359 states have call successors, (359), 96 states have call predecessors, (359), 93 states have return successors, (403), 352 states have call predecessors, (403), 353 states have call successors, (403) [2024-11-18 13:56:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3731 transitions. [2024-11-18 13:56:31,555 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3731 transitions. Word has length 130 [2024-11-18 13:56:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:31,555 INFO L471 AbstractCegarLoop]: Abstraction has 2245 states and 3731 transitions. [2024-11-18 13:56:31,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3731 transitions. [2024-11-18 13:56:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 13:56:31,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:31,558 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:31,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 13:56:31,559 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:31,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 783805981, now seen corresponding path program 1 times [2024-11-18 13:56:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488639839] [2024-11-18 13:56:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488639839] [2024-11-18 13:56:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488639839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055168442] [2024-11-18 13:56:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:31,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:31,639 INFO L87 Difference]: Start difference. First operand 2245 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:32,269 INFO L93 Difference]: Finished difference Result 6564 states and 11194 transitions. [2024-11-18 13:56:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2024-11-18 13:56:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:32,286 INFO L225 Difference]: With dead ends: 6564 [2024-11-18 13:56:32,286 INFO L226 Difference]: Without dead ends: 4389 [2024-11-18 13:56:32,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:32,295 INFO L432 NwaCegarLoop]: 1857 mSDtfsCounter, 1836 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:32,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 3318 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:56:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2024-11-18 13:56:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4385. [2024-11-18 13:56:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 3500 states have (on average 1.6511428571428572) internal successors, (5779), 3610 states have internal predecessors, (5779), 703 states have call successors, (703), 186 states have call predecessors, (703), 181 states have return successors, (866), 692 states have call predecessors, (866), 693 states have call successors, (866) [2024-11-18 13:56:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 7348 transitions. [2024-11-18 13:56:32,402 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 7348 transitions. Word has length 131 [2024-11-18 13:56:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:32,403 INFO L471 AbstractCegarLoop]: Abstraction has 4385 states and 7348 transitions. [2024-11-18 13:56:32,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 7348 transitions. [2024-11-18 13:56:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 13:56:32,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:32,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:32,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 13:56:32,405 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:32,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1806932081, now seen corresponding path program 1 times [2024-11-18 13:56:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716480056] [2024-11-18 13:56:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716480056] [2024-11-18 13:56:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716480056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:32,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:32,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:32,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484156798] [2024-11-18 13:56:32,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:32,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:32,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:32,486 INFO L87 Difference]: Start difference. First operand 4385 states and 7348 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:33,299 INFO L93 Difference]: Finished difference Result 12994 states and 22462 transitions. [2024-11-18 13:56:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2024-11-18 13:56:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:33,333 INFO L225 Difference]: With dead ends: 12994 [2024-11-18 13:56:33,333 INFO L226 Difference]: Without dead ends: 8679 [2024-11-18 13:56:33,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:33,354 INFO L432 NwaCegarLoop]: 1866 mSDtfsCounter, 1845 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 3334 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:33,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 3334 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 13:56:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8679 states. [2024-11-18 13:56:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8679 to 8675. [2024-11-18 13:56:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8675 states, 6924 states have (on average 1.6437030618139803) internal successors, (11381), 7142 states have internal predecessors, (11381), 1393 states have call successors, (1393), 366 states have call predecessors, (1393), 357 states have return successors, (1937), 1374 states have call predecessors, (1937), 1375 states have call successors, (1937) [2024-11-18 13:56:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8675 states to 8675 states and 14711 transitions. [2024-11-18 13:56:33,699 INFO L78 Accepts]: Start accepts. Automaton has 8675 states and 14711 transitions. Word has length 132 [2024-11-18 13:56:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:33,700 INFO L471 AbstractCegarLoop]: Abstraction has 8675 states and 14711 transitions. [2024-11-18 13:56:33,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8675 states and 14711 transitions. [2024-11-18 13:56:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 13:56:33,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:33,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:33,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 13:56:33,704 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:33,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1718134024, now seen corresponding path program 1 times [2024-11-18 13:56:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458912918] [2024-11-18 13:56:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458912918] [2024-11-18 13:56:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458912918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91797935] [2024-11-18 13:56:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:33,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:33,800 INFO L87 Difference]: Start difference. First operand 8675 states and 14711 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:34,799 INFO L93 Difference]: Finished difference Result 25874 states and 45766 transitions. [2024-11-18 13:56:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:34,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2024-11-18 13:56:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:34,879 INFO L225 Difference]: With dead ends: 25874 [2024-11-18 13:56:34,879 INFO L226 Difference]: Without dead ends: 17269 [2024-11-18 13:56:34,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:34,927 INFO L432 NwaCegarLoop]: 1875 mSDtfsCounter, 1854 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:34,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 3350 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 13:56:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17269 states. [2024-11-18 13:56:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17269 to 17265. [2024-11-18 13:56:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17265 states, 13780 states have (on average 1.6353410740203194) internal successors, (22535), 14214 states have internal predecessors, (22535), 2775 states have call successors, (2775), 726 states have call predecessors, (2775), 709 states have return successors, (4528), 2740 states have call predecessors, (4528), 2741 states have call successors, (4528) [2024-11-18 13:56:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17265 states to 17265 states and 29838 transitions. [2024-11-18 13:56:35,675 INFO L78 Accepts]: Start accepts. Automaton has 17265 states and 29838 transitions. Word has length 133 [2024-11-18 13:56:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:35,675 INFO L471 AbstractCegarLoop]: Abstraction has 17265 states and 29838 transitions. [2024-11-18 13:56:35,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17265 states and 29838 transitions. [2024-11-18 13:56:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 13:56:35,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:35,683 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:35,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 13:56:35,683 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:35,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -168094902, now seen corresponding path program 1 times [2024-11-18 13:56:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191872980] [2024-11-18 13:56:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:35,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191872980] [2024-11-18 13:56:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191872980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:35,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:35,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746964996] [2024-11-18 13:56:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:35,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:35,800 INFO L87 Difference]: Start difference. First operand 17265 states and 29838 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:38,073 INFO L93 Difference]: Finished difference Result 51654 states and 94882 transitions. [2024-11-18 13:56:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-18 13:56:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:38,223 INFO L225 Difference]: With dead ends: 51654 [2024-11-18 13:56:38,223 INFO L226 Difference]: Without dead ends: 34459 [2024-11-18 13:56:38,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:38,341 INFO L432 NwaCegarLoop]: 1884 mSDtfsCounter, 1863 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:38,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 3366 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:56:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34459 states. [2024-11-18 13:56:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34459 to 34455. [2024-11-18 13:56:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34455 states, 27500 states have (on average 1.626509090909091) internal successors, (44729), 28366 states have internal predecessors, (44729), 5541 states have call successors, (5541), 1446 states have call predecessors, (5541), 1413 states have return successors, (11131), 5474 states have call predecessors, (11131), 5475 states have call successors, (11131) [2024-11-18 13:56:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34455 states to 34455 states and 61401 transitions. [2024-11-18 13:56:41,089 INFO L78 Accepts]: Start accepts. Automaton has 34455 states and 61401 transitions. Word has length 134 [2024-11-18 13:56:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:41,090 INFO L471 AbstractCegarLoop]: Abstraction has 34455 states and 61401 transitions. [2024-11-18 13:56:41,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 34455 states and 61401 transitions. [2024-11-18 13:56:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 13:56:41,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:41,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:41,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 13:56:41,094 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:41,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash -649175160, now seen corresponding path program 1 times [2024-11-18 13:56:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:41,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720039995] [2024-11-18 13:56:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720039995] [2024-11-18 13:56:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720039995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:56:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151345674] [2024-11-18 13:56:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:41,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:41,247 INFO L87 Difference]: Start difference. First operand 34455 states and 61401 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:43,970 INFO L93 Difference]: Finished difference Result 69421 states and 123257 transitions. [2024-11-18 13:56:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:56:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-11-18 13:56:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:44,339 INFO L225 Difference]: With dead ends: 69421 [2024-11-18 13:56:44,339 INFO L226 Difference]: Without dead ends: 35067 [2024-11-18 13:56:44,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:44,539 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 1096 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 5636 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:44,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 5636 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:56:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35067 states. [2024-11-18 13:56:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35067 to 34679. [2024-11-18 13:56:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34679 states, 27660 states have (on average 1.622885032537961) internal successors, (44889), 28494 states have internal predecessors, (44889), 5541 states have call successors, (5541), 1446 states have call predecessors, (5541), 1477 states have return successors, (11259), 5570 states have call predecessors, (11259), 5475 states have call successors, (11259) [2024-11-18 13:56:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34679 states to 34679 states and 61689 transitions. [2024-11-18 13:56:46,537 INFO L78 Accepts]: Start accepts. Automaton has 34679 states and 61689 transitions. Word has length 134 [2024-11-18 13:56:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:46,538 INFO L471 AbstractCegarLoop]: Abstraction has 34679 states and 61689 transitions. [2024-11-18 13:56:46,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:56:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 34679 states and 61689 transitions. [2024-11-18 13:56:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 13:56:46,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:46,541 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:46,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 13:56:46,542 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash -206474284, now seen corresponding path program 1 times [2024-11-18 13:56:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476832305] [2024-11-18 13:56:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476832305] [2024-11-18 13:56:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476832305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:46,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:46,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:56:46,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225406440] [2024-11-18 13:56:46,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:46,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:46,645 INFO L87 Difference]: Start difference. First operand 34679 states and 61689 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:56:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:48,728 INFO L93 Difference]: Finished difference Result 69865 states and 123960 transitions. [2024-11-18 13:56:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:56:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2024-11-18 13:56:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:48,906 INFO L225 Difference]: With dead ends: 69865 [2024-11-18 13:56:48,906 INFO L226 Difference]: Without dead ends: 35287 [2024-11-18 13:56:49,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:49,372 INFO L432 NwaCegarLoop]: 959 mSDtfsCounter, 0 mSDsluCounter, 4763 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:49,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5722 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35287 states. [2024-11-18 13:56:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35287 to 35127. [2024-11-18 13:56:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35127 states, 27980 states have (on average 1.6157612580414582) internal successors, (45209), 28814 states have internal predecessors, (45209), 5541 states have call successors, (5541), 1446 states have call predecessors, (5541), 1605 states have return successors, (11579), 5698 states have call predecessors, (11579), 5475 states have call successors, (11579) [2024-11-18 13:56:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35127 states to 35127 states and 62329 transitions. [2024-11-18 13:56:51,166 INFO L78 Accepts]: Start accepts. Automaton has 35127 states and 62329 transitions. Word has length 139 [2024-11-18 13:56:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:51,166 INFO L471 AbstractCegarLoop]: Abstraction has 35127 states and 62329 transitions. [2024-11-18 13:56:51,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:56:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 35127 states and 62329 transitions. [2024-11-18 13:56:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 13:56:51,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:51,171 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:51,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 13:56:51,171 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:51,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash -687021055, now seen corresponding path program 1 times [2024-11-18 13:56:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339657350] [2024-11-18 13:56:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339657350] [2024-11-18 13:56:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339657350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:51,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:51,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:56:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363642166] [2024-11-18 13:56:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:51,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:51,279 INFO L87 Difference]: Start difference. First operand 35127 states and 62329 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:56:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:53,313 INFO L93 Difference]: Finished difference Result 70154 states and 123881 transitions. [2024-11-18 13:56:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-11-18 13:56:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:53,497 INFO L225 Difference]: With dead ends: 70154 [2024-11-18 13:56:53,498 INFO L226 Difference]: Without dead ends: 35128 [2024-11-18 13:56:53,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:53,744 INFO L432 NwaCegarLoop]: 960 mSDtfsCounter, 3 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:53,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2871 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:56:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35128 states. [2024-11-18 13:56:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35128 to 35122. [2024-11-18 13:56:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35122 states, 27977 states have (on average 1.6157557994066554) internal successors, (45204), 28812 states have internal predecessors, (45204), 5539 states have call successors, (5539), 1446 states have call predecessors, (5539), 1605 states have return successors, (11574), 5695 states have call predecessors, (11574), 5473 states have call successors, (11574) [2024-11-18 13:56:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35122 states to 35122 states and 62317 transitions. [2024-11-18 13:56:55,751 INFO L78 Accepts]: Start accepts. Automaton has 35122 states and 62317 transitions. Word has length 140 [2024-11-18 13:56:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:55,752 INFO L471 AbstractCegarLoop]: Abstraction has 35122 states and 62317 transitions. [2024-11-18 13:56:55,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:56:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 35122 states and 62317 transitions. [2024-11-18 13:56:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 13:56:55,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:55,757 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:55,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 13:56:55,757 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:55,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1894180733, now seen corresponding path program 1 times [2024-11-18 13:56:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:55,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691840412] [2024-11-18 13:56:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:55,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691840412] [2024-11-18 13:56:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691840412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:55,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:56:55,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:56:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537885246] [2024-11-18 13:56:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:55,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:55,885 INFO L87 Difference]: Start difference. First operand 35122 states and 62317 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:56:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:58,036 INFO L93 Difference]: Finished difference Result 70623 states and 124959 transitions. [2024-11-18 13:56:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:56:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-11-18 13:56:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:58,238 INFO L225 Difference]: With dead ends: 70623 [2024-11-18 13:56:58,239 INFO L226 Difference]: Without dead ends: 35602 [2024-11-18 13:56:58,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:58,588 INFO L432 NwaCegarLoop]: 962 mSDtfsCounter, 0 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:58,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5735 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35602 states. [2024-11-18 13:56:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35602 to 35186. [2024-11-18 13:56:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35186 states, 28041 states have (on average 1.614350415463072) internal successors, (45268), 28812 states have internal predecessors, (45268), 5539 states have call successors, (5539), 1446 states have call predecessors, (5539), 1605 states have return successors, (11574), 5759 states have call predecessors, (11574), 5473 states have call successors, (11574) [2024-11-18 13:57:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35186 states to 35186 states and 62381 transitions. [2024-11-18 13:57:00,353 INFO L78 Accepts]: Start accepts. Automaton has 35186 states and 62381 transitions. Word has length 140 [2024-11-18 13:57:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:00,358 INFO L471 AbstractCegarLoop]: Abstraction has 35186 states and 62381 transitions. [2024-11-18 13:57:00,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:57:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 35186 states and 62381 transitions. [2024-11-18 13:57:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 13:57:00,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:00,363 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:57:00,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 13:57:00,364 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:00,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1007827212, now seen corresponding path program 1 times [2024-11-18 13:57:00,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:00,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826667790] [2024-11-18 13:57:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:57:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826667790] [2024-11-18 13:57:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826667790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:57:00,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:57:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853495908] [2024-11-18 13:57:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:00,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:57:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:57:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:57:00,453 INFO L87 Difference]: Start difference. First operand 35186 states and 62381 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:57:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:05,501 INFO L93 Difference]: Finished difference Result 121215 states and 215610 transitions. [2024-11-18 13:57:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:57:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 148 [2024-11-18 13:57:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:06,008 INFO L225 Difference]: With dead ends: 121215 [2024-11-18 13:57:06,008 INFO L226 Difference]: Without dead ends: 86130 [2024-11-18 13:57:06,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:57:06,451 INFO L432 NwaCegarLoop]: 1764 mSDtfsCounter, 1767 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:06,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 3327 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:57:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86130 states. [2024-11-18 13:57:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86130 to 85994. [2024-11-18 13:57:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85994 states, 68264 states have (on average 1.5953357553029415) internal successors, (108904), 70189 states have internal predecessors, (108904), 13564 states have call successors, (13564), 3782 states have call predecessors, (13564), 4165 states have return successors, (28288), 14070 states have call predecessors, (28288), 13402 states have call successors, (28288) [2024-11-18 13:57:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85994 states to 85994 states and 150756 transitions. [2024-11-18 13:57:11,157 INFO L78 Accepts]: Start accepts. Automaton has 85994 states and 150756 transitions. Word has length 148 [2024-11-18 13:57:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:11,158 INFO L471 AbstractCegarLoop]: Abstraction has 85994 states and 150756 transitions. [2024-11-18 13:57:11,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:57:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 85994 states and 150756 transitions. [2024-11-18 13:57:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 13:57:11,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:11,162 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:57:11,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-18 13:57:11,162 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:11,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash 653167679, now seen corresponding path program 1 times [2024-11-18 13:57:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463002892] [2024-11-18 13:57:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:57:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463002892] [2024-11-18 13:57:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463002892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:57:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 13:57:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216509592] [2024-11-18 13:57:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:11,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:57:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:57:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:57:11,748 INFO L87 Difference]: Start difference. First operand 85994 states and 150756 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)