./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product26.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 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:02:58,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:02:58,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:02:58,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:02:58,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:02:58,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:02:58,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:02:58,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:02:58,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:02:58,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:02:58,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:02:58,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:02:58,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:02:58,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:02:58,652 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:02:58,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:02:58,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:02:58,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:02:58,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:02:58,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:02:58,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:02:58,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:02:58,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:02:58,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:02:58,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:02:58,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:02:58,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:02:58,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:02:58,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:02:58,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:02:58,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:02:58,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:02:58,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:02:58,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:02:58,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:02:58,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:02:58,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:02:58,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:02:58,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:02:58,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:02:58,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:02:58,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:02:58,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2024-11-18 14:02:58,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:02:58,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:02:58,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:02:58,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:02:58,960 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:02:58,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-11-18 14:03:00,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:03:00,442 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:03:00,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-11-18 14:03:00,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cc3252b/61f4d4a965074b199663d8191da6581c/FLAG1a6a15f93 [2024-11-18 14:03:00,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cc3252b/61f4d4a965074b199663d8191da6581c [2024-11-18 14:03:00,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:03:00,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:03:00,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:00,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:03:00,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:03:00,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:00" (1/1) ... [2024-11-18 14:03:00,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251a5b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:00, skipping insertion in model container [2024-11-18 14:03:00,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:00" (1/1) ... [2024-11-18 14:03:00,534 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:03:00,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-11-18 14:03:00,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:00,964 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:03:00,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-18 14:03:00,972 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [67] [2024-11-18 14:03:00,972 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [168] [2024-11-18 14:03:00,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [520] [2024-11-18 14:03:00,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2024-11-18 14:03:00,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2407] [2024-11-18 14:03:00,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3068] [2024-11-18 14:03:00,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3186] [2024-11-18 14:03:00,975 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3195] [2024-11-18 14:03:00,975 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3230] [2024-11-18 14:03:01,070 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-11-18 14:03:01,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:01,098 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:03:01,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01 WrapperNode [2024-11-18 14:03:01,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:01,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:01,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:03:01,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:03:01,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,187 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 862 [2024-11-18 14:03:01,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:01,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:03:01,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:03:01,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:03:01,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,240 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 14:03:01,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:03:01,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:03:01,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:03:01,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:03:01,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:03:01,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:01,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:03:01,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:03:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:03:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 14:03:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 14:03:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:03:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:03:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:03:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:03:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:03:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:03:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 14:03:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 14:03:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:03:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:03:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:03:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:03:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:03:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:03:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:03:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:03:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:03:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:03:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:03:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:03:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:03:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:03:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-18 14:03:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-18 14:03:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:03:01,384 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:03:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-18 14:03:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-18 14:03:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:03:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2024-11-18 14:03:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:03:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:03:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:03:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:03:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:03:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:03:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:03:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:03:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:03:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:03:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:03:01,404 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:03:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:03:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:03:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:03:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:03:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:03:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:03:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:03:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:03:01,405 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:03:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:03:01,551 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:03:01,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:03:02,477 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-18 14:03:02,477 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:03:02,504 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:03:02,508 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:03:02,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:02 BoogieIcfgContainer [2024-11-18 14:03:02,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:03:02,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:03:02,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:03:02,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:03:02,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:03:00" (1/3) ... [2024-11-18 14:03:02,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd781b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:02, skipping insertion in model container [2024-11-18 14:03:02,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (2/3) ... [2024-11-18 14:03:02,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd781b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:02, skipping insertion in model container [2024-11-18 14:03:02,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:02" (3/3) ... [2024-11-18 14:03:02,516 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2024-11-18 14:03:02,528 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:03:02,529 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:03:02,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:03:02,604 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;@1dfae0f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:03:02,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:03:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 14:03:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 14:03:02,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:02,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:02,621 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:02,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:02,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1615056188, now seen corresponding path program 1 times [2024-11-18 14:03:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968112886] [2024-11-18 14:03:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:03,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:03,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968112886] [2024-11-18 14:03:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968112886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:03,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:03,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282320971] [2024-11-18 14:03:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:03,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:03,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:03,281 INFO L87 Difference]: Start difference. First operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:03,450 INFO L93 Difference]: Finished difference Result 1153 states and 1934 transitions. [2024-11-18 14:03:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:03,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-11-18 14:03:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:03,469 INFO L225 Difference]: With dead ends: 1153 [2024-11-18 14:03:03,469 INFO L226 Difference]: Without dead ends: 583 [2024-11-18 14:03:03,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:03,478 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 91 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5579 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:03,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5579 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-18 14:03:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2024-11-18 14:03:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.676991150442478) internal successors, (758), 472 states have internal predecessors, (758), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-18 14:03:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 963 transitions. [2024-11-18 14:03:03,551 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 963 transitions. Word has length 63 [2024-11-18 14:03:03,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:03,553 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 963 transitions. [2024-11-18 14:03:03,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 963 transitions. [2024-11-18 14:03:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:03:03,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:03,560 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:03,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:03:03,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:03,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash -102377112, now seen corresponding path program 1 times [2024-11-18 14:03:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:03,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598266214] [2024-11-18 14:03:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:03,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:03,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598266214] [2024-11-18 14:03:03,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598266214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322702477] [2024-11-18 14:03:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:03,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:03,855 INFO L87 Difference]: Start difference. First operand 581 states and 963 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:03,957 INFO L93 Difference]: Finished difference Result 1157 states and 1929 transitions. [2024-11-18 14:03:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-11-18 14:03:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:03,963 INFO L225 Difference]: With dead ends: 1157 [2024-11-18 14:03:03,963 INFO L226 Difference]: Without dead ends: 592 [2024-11-18 14:03:03,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:03,967 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 90 mSDsluCounter, 4629 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5574 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:03,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5574 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-18 14:03:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 581. [2024-11-18 14:03:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.676991150442478) internal successors, (758), 472 states have internal predecessors, (758), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-18 14:03:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 963 transitions. [2024-11-18 14:03:04,001 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 963 transitions. Word has length 64 [2024-11-18 14:03:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,001 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 963 transitions. [2024-11-18 14:03:04,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 963 transitions. [2024-11-18 14:03:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:03:04,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:04,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:03:04,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash 638342732, now seen corresponding path program 1 times [2024-11-18 14:03:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008433123] [2024-11-18 14:03:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008433123] [2024-11-18 14:03:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008433123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780862861] [2024-11-18 14:03:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:04,121 INFO L87 Difference]: Start difference. First operand 581 states and 963 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,168 INFO L93 Difference]: Finished difference Result 1144 states and 1907 transitions. [2024-11-18 14:03:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-18 14:03:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,174 INFO L225 Difference]: With dead ends: 1144 [2024-11-18 14:03:04,174 INFO L226 Difference]: Without dead ends: 551 [2024-11-18 14:03:04,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:04,179 INFO L432 NwaCegarLoop]: 933 mSDtfsCounter, 14 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2794 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-18 14:03:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-18 14:03:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 425 states have (on average 1.6611764705882353) internal successors, (706), 443 states have internal predecessors, (706), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 907 transitions. [2024-11-18 14:03:04,217 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 907 transitions. Word has length 64 [2024-11-18 14:03:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,218 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 907 transitions. [2024-11-18 14:03:04,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 907 transitions. [2024-11-18 14:03:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:03:04,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,220 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:04,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:03:04,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1467300504, now seen corresponding path program 1 times [2024-11-18 14:03:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735462535] [2024-11-18 14:03:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735462535] [2024-11-18 14:03:04,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735462535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:04,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:04,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232661881] [2024-11-18 14:03:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:04,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:04,388 INFO L87 Difference]: Start difference. First operand 551 states and 907 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,452 INFO L93 Difference]: Finished difference Result 1095 states and 1813 transitions. [2024-11-18 14:03:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 14:03:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,458 INFO L225 Difference]: With dead ends: 1095 [2024-11-18 14:03:04,458 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 14:03:04,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:04,464 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 63 mSDsluCounter, 4427 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5324 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 14:03:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-18 14:03:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 419 states have (on average 1.6539379474940334) internal successors, (693), 437 states have internal predecessors, (693), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 894 transitions. [2024-11-18 14:03:04,489 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 894 transitions. Word has length 65 [2024-11-18 14:03:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,489 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 894 transitions. [2024-11-18 14:03:04,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 894 transitions. [2024-11-18 14:03:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:03:04,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,491 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:04,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:03:04,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1843587188, now seen corresponding path program 1 times [2024-11-18 14:03:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18071900] [2024-11-18 14:03:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18071900] [2024-11-18 14:03:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18071900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590476387] [2024-11-18 14:03:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:04,670 INFO L87 Difference]: Start difference. First operand 545 states and 894 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,721 INFO L93 Difference]: Finished difference Result 1083 states and 1787 transitions. [2024-11-18 14:03:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:04,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-18 14:03:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,725 INFO L225 Difference]: With dead ends: 1083 [2024-11-18 14:03:04,725 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:04,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:04,728 INFO L432 NwaCegarLoop]: 885 mSDtfsCounter, 49 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5264 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6464891041162228) internal successors, (680), 431 states have internal predecessors, (680), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 881 transitions. [2024-11-18 14:03:04,743 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 881 transitions. Word has length 66 [2024-11-18 14:03:04,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,743 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 881 transitions. [2024-11-18 14:03:04,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 881 transitions. [2024-11-18 14:03:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:03:04,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,744 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:04,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:03:04,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 789040973, now seen corresponding path program 1 times [2024-11-18 14:03:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218915356] [2024-11-18 14:03:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218915356] [2024-11-18 14:03:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218915356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170326901] [2024-11-18 14:03:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:04,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:04,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:04,861 INFO L87 Difference]: Start difference. First operand 539 states and 881 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,922 INFO L93 Difference]: Finished difference Result 1071 states and 1761 transitions. [2024-11-18 14:03:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-18 14:03:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,925 INFO L225 Difference]: With dead ends: 1071 [2024-11-18 14:03:04,925 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:04,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:04,928 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 24 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5216 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6440677966101696) internal successors, (679), 431 states have internal predecessors, (679), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 880 transitions. [2024-11-18 14:03:04,946 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 880 transitions. Word has length 66 [2024-11-18 14:03:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,947 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 880 transitions. [2024-11-18 14:03:04,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 880 transitions. [2024-11-18 14:03:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:03:04,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:04,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:03:04,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1636906996, now seen corresponding path program 1 times [2024-11-18 14:03:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573119836] [2024-11-18 14:03:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573119836] [2024-11-18 14:03:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573119836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913148509] [2024-11-18 14:03:05,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:05,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,038 INFO L87 Difference]: Start difference. First operand 539 states and 880 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,073 INFO L93 Difference]: Finished difference Result 1062 states and 1746 transitions. [2024-11-18 14:03:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-18 14:03:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,078 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 14:03:05,078 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:05,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,080 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 15 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2580 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6416464891041163) internal successors, (678), 431 states have internal predecessors, (678), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 879 transitions. [2024-11-18 14:03:05,098 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 879 transitions. Word has length 67 [2024-11-18 14:03:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,098 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 879 transitions. [2024-11-18 14:03:05,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,099 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 879 transitions. [2024-11-18 14:03:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:03:05,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,101 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:05,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:03:05,101 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1677680748, now seen corresponding path program 1 times [2024-11-18 14:03:05,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629980221] [2024-11-18 14:03:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629980221] [2024-11-18 14:03:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629980221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723532910] [2024-11-18 14:03:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,203 INFO L87 Difference]: Start difference. First operand 539 states and 879 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,247 INFO L93 Difference]: Finished difference Result 1062 states and 1744 transitions. [2024-11-18 14:03:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-18 14:03:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,251 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 14:03:05,252 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:05,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,257 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 14 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2582 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.639225181598063) internal successors, (677), 431 states have internal predecessors, (677), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 878 transitions. [2024-11-18 14:03:05,299 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 878 transitions. Word has length 68 [2024-11-18 14:03:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,299 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 878 transitions. [2024-11-18 14:03:05,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 878 transitions. [2024-11-18 14:03:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:03:05,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,303 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:05,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:03:05,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1388155601, now seen corresponding path program 1 times [2024-11-18 14:03:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678754958] [2024-11-18 14:03:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678754958] [2024-11-18 14:03:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678754958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224070259] [2024-11-18 14:03:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,390 INFO L87 Difference]: Start difference. First operand 539 states and 878 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,433 INFO L93 Difference]: Finished difference Result 1062 states and 1742 transitions. [2024-11-18 14:03:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-18 14:03:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,437 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 14:03:05,437 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:05,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,441 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 13 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2584 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6368038740920097) internal successors, (676), 431 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 877 transitions. [2024-11-18 14:03:05,457 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 877 transitions. Word has length 69 [2024-11-18 14:03:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,457 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 877 transitions. [2024-11-18 14:03:05,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 877 transitions. [2024-11-18 14:03:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:03:05,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:05,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:03:05,459 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1040280529, now seen corresponding path program 1 times [2024-11-18 14:03:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083442519] [2024-11-18 14:03:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083442519] [2024-11-18 14:03:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083442519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426406618] [2024-11-18 14:03:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,534 INFO L87 Difference]: Start difference. First operand 539 states and 877 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,565 INFO L93 Difference]: Finished difference Result 1062 states and 1740 transitions. [2024-11-18 14:03:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-18 14:03:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,569 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 14:03:05,569 INFO L226 Difference]: Without dead ends: 539 [2024-11-18 14:03:05,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,571 INFO L432 NwaCegarLoop]: 868 mSDtfsCounter, 12 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2586 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-18 14:03:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-18 14:03:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6343825665859564) internal successors, (675), 431 states have internal predecessors, (675), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-18 14:03:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 876 transitions. [2024-11-18 14:03:05,585 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 876 transitions. Word has length 70 [2024-11-18 14:03:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,586 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 876 transitions. [2024-11-18 14:03:05,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 14:03:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 876 transitions. [2024-11-18 14:03:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:03:05,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:05,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:03:05,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1116442218, now seen corresponding path program 1 times [2024-11-18 14:03:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868749800] [2024-11-18 14:03:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:05,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868749800] [2024-11-18 14:03:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868749800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801246201] [2024-11-18 14:03:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:05,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:05,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:03:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:06,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:06,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801246201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:06,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-18 14:03:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938439586] [2024-11-18 14:03:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:03:06,090 INFO L87 Difference]: Start difference. First operand 539 states and 876 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,135 INFO L93 Difference]: Finished difference Result 1529 states and 2518 transitions. [2024-11-18 14:03:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2024-11-18 14:03:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,143 INFO L225 Difference]: With dead ends: 1529 [2024-11-18 14:03:06,143 INFO L226 Difference]: Without dead ends: 1008 [2024-11-18 14:03:06,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:03:06,146 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 842 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1656 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2024-11-18 14:03:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 993. [2024-11-18 14:03:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 768 states have (on average 1.6484375) internal successors, (1266), 803 states have internal predecessors, (1266), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2024-11-18 14:03:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1628 transitions. [2024-11-18 14:03:06,199 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1628 transitions. Word has length 71 [2024-11-18 14:03:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:06,199 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1628 transitions. [2024-11-18 14:03:06,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1628 transitions. [2024-11-18 14:03:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:03:06,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:06,201 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:06,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:03:06,401 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,SelfDestructingSolverStorable10 [2024-11-18 14:03:06,401 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:06,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1488771343, now seen corresponding path program 1 times [2024-11-18 14:03:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874325112] [2024-11-18 14:03:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:06,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874325112] [2024-11-18 14:03:06,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874325112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714011491] [2024-11-18 14:03:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:06,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:06,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:03:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:06,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:06,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:06,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714011491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-18 14:03:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494376641] [2024-11-18 14:03:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:03:06,883 INFO L87 Difference]: Start difference. First operand 993 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,937 INFO L93 Difference]: Finished difference Result 2437 states and 4024 transitions. [2024-11-18 14:03:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:06,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-18 14:03:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,946 INFO L225 Difference]: With dead ends: 2437 [2024-11-18 14:03:06,946 INFO L226 Difference]: Without dead ends: 1462 [2024-11-18 14:03:06,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:03:06,951 INFO L432 NwaCegarLoop]: 941 mSDtfsCounter, 842 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1712 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2024-11-18 14:03:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1414. [2024-11-18 14:03:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1096 states have (on average 1.6614963503649636) internal successors, (1821), 1148 states have internal predecessors, (1821), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2024-11-18 14:03:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2338 transitions. [2024-11-18 14:03:07,021 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2338 transitions. Word has length 72 [2024-11-18 14:03:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:07,022 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2338 transitions. [2024-11-18 14:03:07,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 14:03:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2338 transitions. [2024-11-18 14:03:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:03:07,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:07,023 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:07,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:03:07,224 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,SelfDestructingSolverStorable11 [2024-11-18 14:03:07,225 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:07,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1710631331, now seen corresponding path program 1 times [2024-11-18 14:03:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:07,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330344108] [2024-11-18 14:03:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330344108] [2024-11-18 14:03:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330344108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:07,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588552510] [2024-11-18 14:03:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:07,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:07,347 INFO L87 Difference]: Start difference. First operand 1414 states and 2338 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:07,812 INFO L93 Difference]: Finished difference Result 4178 states and 7057 transitions. [2024-11-18 14:03:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:07,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-18 14:03:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:07,833 INFO L225 Difference]: With dead ends: 4178 [2024-11-18 14:03:07,834 INFO L226 Difference]: Without dead ends: 2782 [2024-11-18 14:03:07,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:07,842 INFO L432 NwaCegarLoop]: 1011 mSDtfsCounter, 871 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:07,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 4638 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-11-18 14:03:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2735. [2024-11-18 14:03:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2125 states have (on average 1.6654117647058824) internal successors, (3539), 2225 states have internal predecessors, (3539), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (595), 475 states have call predecessors, (595), 485 states have call successors, (595) [2024-11-18 14:03:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4623 transitions. [2024-11-18 14:03:07,974 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4623 transitions. Word has length 74 [2024-11-18 14:03:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:07,974 INFO L471 AbstractCegarLoop]: Abstraction has 2735 states and 4623 transitions. [2024-11-18 14:03:07,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4623 transitions. [2024-11-18 14:03:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:03:07,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:07,977 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:07,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:03:07,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:07,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -229252298, now seen corresponding path program 1 times [2024-11-18 14:03:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207490602] [2024-11-18 14:03:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:07,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:08,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:08,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207490602] [2024-11-18 14:03:08,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207490602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:08,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360581975] [2024-11-18 14:03:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:08,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:08,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:08,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:03:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:08,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:03:08,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:08,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360581975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:08,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:08,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-18 14:03:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094554509] [2024-11-18 14:03:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:08,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:03:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:03:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:03:08,474 INFO L87 Difference]: Start difference. First operand 2735 states and 4623 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 14:03:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:08,862 INFO L93 Difference]: Finished difference Result 7378 states and 12670 transitions. [2024-11-18 14:03:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:03:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-18 14:03:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:08,898 INFO L225 Difference]: With dead ends: 7378 [2024-11-18 14:03:08,899 INFO L226 Difference]: Without dead ends: 4661 [2024-11-18 14:03:08,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:03:08,919 INFO L432 NwaCegarLoop]: 899 mSDtfsCounter, 741 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:08,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 3448 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:03:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2024-11-18 14:03:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4618. [2024-11-18 14:03:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 3586 states have (on average 1.618516452872281) internal successors, (5804), 3752 states have internal predecessors, (5804), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1100), 795 states have call predecessors, (1100), 808 states have call successors, (1100) [2024-11-18 14:03:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 7718 transitions. [2024-11-18 14:03:09,139 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 7718 transitions. Word has length 75 [2024-11-18 14:03:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:09,139 INFO L471 AbstractCegarLoop]: Abstraction has 4618 states and 7718 transitions. [2024-11-18 14:03:09,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 14:03:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 7718 transitions. [2024-11-18 14:03:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:03:09,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:09,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:09,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:09,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -41120062, now seen corresponding path program 1 times [2024-11-18 14:03:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928253266] [2024-11-18 14:03:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928253266] [2024-11-18 14:03:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928253266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913537386] [2024-11-18 14:03:09,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:09,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:09,442 INFO L87 Difference]: Start difference. First operand 4618 states and 7718 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:09,650 INFO L93 Difference]: Finished difference Result 9242 states and 15601 transitions. [2024-11-18 14:03:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-11-18 14:03:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:09,682 INFO L225 Difference]: With dead ends: 9242 [2024-11-18 14:03:09,682 INFO L226 Difference]: Without dead ends: 4642 [2024-11-18 14:03:09,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:09,709 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 12 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:09,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2552 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2024-11-18 14:03:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4626. [2024-11-18 14:03:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 3592 states have (on average 1.6169265033407572) internal successors, (5808), 3758 states have internal predecessors, (5808), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1087), 793 states have call predecessors, (1087), 808 states have call successors, (1087) [2024-11-18 14:03:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7709 transitions. [2024-11-18 14:03:09,910 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7709 transitions. Word has length 75 [2024-11-18 14:03:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:09,911 INFO L471 AbstractCegarLoop]: Abstraction has 4626 states and 7709 transitions. [2024-11-18 14:03:09,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7709 transitions. [2024-11-18 14:03:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 14:03:09,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:09,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:09,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:03:09,912 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:09,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1571611657, now seen corresponding path program 1 times [2024-11-18 14:03:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965394896] [2024-11-18 14:03:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:03:10,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965394896] [2024-11-18 14:03:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965394896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:10,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:10,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:10,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988971141] [2024-11-18 14:03:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:10,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:10,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:10,036 INFO L87 Difference]: Start difference. First operand 4626 states and 7709 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:03:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:10,653 INFO L93 Difference]: Finished difference Result 13829 states and 23885 transitions. [2024-11-18 14:03:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2024-11-18 14:03:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:10,721 INFO L225 Difference]: With dead ends: 13829 [2024-11-18 14:03:10,722 INFO L226 Difference]: Without dead ends: 9221 [2024-11-18 14:03:10,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:10,744 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 868 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:10,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 4382 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9221 states. [2024-11-18 14:03:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9221 to 9152. [2024-11-18 14:03:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9152 states, 7114 states have (on average 1.614703401743042) internal successors, (11487), 7440 states have internal predecessors, (11487), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2611), 1569 states have call predecessors, (2611), 1590 states have call successors, (2611) [2024-11-18 14:03:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9152 states to 9152 states and 15698 transitions. [2024-11-18 14:03:11,131 INFO L78 Accepts]: Start accepts. Automaton has 9152 states and 15698 transitions. Word has length 83 [2024-11-18 14:03:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:11,132 INFO L471 AbstractCegarLoop]: Abstraction has 9152 states and 15698 transitions. [2024-11-18 14:03:11,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:03:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9152 states and 15698 transitions. [2024-11-18 14:03:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:03:11,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:11,134 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:11,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:03:11,134 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:11,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 475861302, now seen corresponding path program 1 times [2024-11-18 14:03:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988263252] [2024-11-18 14:03:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:03:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988263252] [2024-11-18 14:03:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988263252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561447016] [2024-11-18 14:03:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:11,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:11,207 INFO L87 Difference]: Start difference. First operand 9152 states and 15698 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:03:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:11,664 INFO L93 Difference]: Finished difference Result 18358 states and 31949 transitions. [2024-11-18 14:03:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-11-18 14:03:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:11,745 INFO L225 Difference]: With dead ends: 18358 [2024-11-18 14:03:11,746 INFO L226 Difference]: Without dead ends: 9224 [2024-11-18 14:03:11,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:11,800 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 12 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:11,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2546 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2024-11-18 14:03:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 9192. [2024-11-18 14:03:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9192 states, 7150 states have (on average 1.612167832167832) internal successors, (11527), 7468 states have internal predecessors, (11527), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2591), 1565 states have call predecessors, (2591), 1590 states have call successors, (2591) [2024-11-18 14:03:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9192 states to 9192 states and 15718 transitions. [2024-11-18 14:03:12,433 INFO L78 Accepts]: Start accepts. Automaton has 9192 states and 15718 transitions. Word has length 84 [2024-11-18 14:03:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:12,434 INFO L471 AbstractCegarLoop]: Abstraction has 9192 states and 15718 transitions. [2024-11-18 14:03:12,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:03:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 9192 states and 15718 transitions. [2024-11-18 14:03:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:03:12,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:12,436 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:12,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:03:12,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:12,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -544941312, now seen corresponding path program 1 times [2024-11-18 14:03:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963422414] [2024-11-18 14:03:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:03:12,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963422414] [2024-11-18 14:03:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963422414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:12,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:12,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:12,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101829468] [2024-11-18 14:03:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:12,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:12,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:12,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:12,546 INFO L87 Difference]: Start difference. First operand 9192 states and 15718 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:03:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:13,485 INFO L93 Difference]: Finished difference Result 27599 states and 49758 transitions. [2024-11-18 14:03:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:13,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-11-18 14:03:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:13,612 INFO L225 Difference]: With dead ends: 27599 [2024-11-18 14:03:13,613 INFO L226 Difference]: Without dead ends: 18425 [2024-11-18 14:03:13,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:13,663 INFO L432 NwaCegarLoop]: 983 mSDtfsCounter, 861 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:13,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 4540 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18425 states. [2024-11-18 14:03:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18425 to 18324. [2024-11-18 14:03:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18324 states, 14260 states have (on average 1.6093267882187938) internal successors, (22949), 14890 states have internal predecessors, (22949), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6613), 3123 states have call predecessors, (6613), 3160 states have call successors, (6613) [2024-11-18 14:03:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18324 states to 18324 states and 32740 transitions. [2024-11-18 14:03:14,423 INFO L78 Accepts]: Start accepts. Automaton has 18324 states and 32740 transitions. Word has length 93 [2024-11-18 14:03:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:14,424 INFO L471 AbstractCegarLoop]: Abstraction has 18324 states and 32740 transitions. [2024-11-18 14:03:14,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:03:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 18324 states and 32740 transitions. [2024-11-18 14:03:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 14:03:14,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:14,426 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:14,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:03:14,426 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:14,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1425169813, now seen corresponding path program 1 times [2024-11-18 14:03:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841396644] [2024-11-18 14:03:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:03:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841396644] [2024-11-18 14:03:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841396644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:14,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:14,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468093428] [2024-11-18 14:03:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:14,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:14,500 INFO L87 Difference]: Start difference. First operand 18324 states and 32740 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:03:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:15,531 INFO L93 Difference]: Finished difference Result 36774 states and 67275 transitions. [2024-11-18 14:03:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-11-18 14:03:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:15,704 INFO L225 Difference]: With dead ends: 36774 [2024-11-18 14:03:15,704 INFO L226 Difference]: Without dead ends: 18468 [2024-11-18 14:03:15,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:15,859 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 11 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:15,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2549 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:03:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18468 states. [2024-11-18 14:03:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18468 to 18404. [2024-11-18 14:03:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18404 states, 14332 states have (on average 1.6068238905944738) internal successors, (23029), 14962 states have internal predecessors, (23029), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6585), 3115 states have call predecessors, (6585), 3160 states have call successors, (6585) [2024-11-18 14:03:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18404 states to 18404 states and 32792 transitions. [2024-11-18 14:03:16,684 INFO L78 Accepts]: Start accepts. Automaton has 18404 states and 32792 transitions. Word has length 94 [2024-11-18 14:03:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:16,685 INFO L471 AbstractCegarLoop]: Abstraction has 18404 states and 32792 transitions. [2024-11-18 14:03:16,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:03:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 18404 states and 32792 transitions. [2024-11-18 14:03:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:03:16,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:16,688 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:16,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:03:16,689 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:16,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash -346131133, now seen corresponding path program 1 times [2024-11-18 14:03:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729867795] [2024-11-18 14:03:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:16,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:03:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729867795] [2024-11-18 14:03:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729867795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721125970] [2024-11-18 14:03:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:17,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:17,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:17,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:03:17,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:03:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:17,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:03:17,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:03:17,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721125970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:17,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-18 14:03:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948398685] [2024-11-18 14:03:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:17,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:03:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:03:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:03:17,481 INFO L87 Difference]: Start difference. First operand 18404 states and 32792 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 14:03:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:22,524 INFO L93 Difference]: Finished difference Result 65869 states and 125172 transitions. [2024-11-18 14:03:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:03:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2024-11-18 14:03:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:23,091 INFO L225 Difference]: With dead ends: 65869 [2024-11-18 14:03:23,092 INFO L226 Difference]: Without dead ends: 47483 [2024-11-18 14:03:23,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:03:23,201 INFO L432 NwaCegarLoop]: 645 mSDtfsCounter, 3011 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 6421 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 7056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 6421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:23,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 2467 Invalid, 7056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 6421 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 14:03:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47483 states. [2024-11-18 14:03:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47483 to 46798. [2024-11-18 14:03:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46798 states, 36492 states have (on average 1.5993368409514415) internal successors, (58363), 38018 states have internal predecessors, (58363), 7956 states have call successors, (7956), 2206 states have call predecessors, (7956), 2349 states have return successors, (20721), 7941 states have call predecessors, (20721), 7922 states have call successors, (20721) [2024-11-18 14:03:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46798 states to 46798 states and 87040 transitions. [2024-11-18 14:03:25,542 INFO L78 Accepts]: Start accepts. Automaton has 46798 states and 87040 transitions. Word has length 128 [2024-11-18 14:03:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:25,543 INFO L471 AbstractCegarLoop]: Abstraction has 46798 states and 87040 transitions. [2024-11-18 14:03:25,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 14:03:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 46798 states and 87040 transitions. [2024-11-18 14:03:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 14:03:25,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:25,544 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:25,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:03:25,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:25,746 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:25,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2101931910, now seen corresponding path program 1 times [2024-11-18 14:03:25,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943718958] [2024-11-18 14:03:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:03:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943718958] [2024-11-18 14:03:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943718958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:26,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840173434] [2024-11-18 14:03:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:26,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:26,047 INFO L87 Difference]: Start difference. First operand 46798 states and 87040 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:03:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:30,823 INFO L93 Difference]: Finished difference Result 140823 states and 291584 transitions. [2024-11-18 14:03:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-11-18 14:03:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:31,960 INFO L225 Difference]: With dead ends: 140823 [2024-11-18 14:03:31,960 INFO L226 Difference]: Without dead ends: 94043 [2024-11-18 14:03:32,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:32,301 INFO L432 NwaCegarLoop]: 937 mSDtfsCounter, 859 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:32,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 4371 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:03:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94043 states. [2024-11-18 14:03:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94043 to 93686. [2024-11-18 14:03:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93686 states, 73064 states have (on average 1.596559180992007) internal successors, (116651), 76102 states have internal predecessors, (116651), 15880 states have call successors, (15880), 4406 states have call predecessors, (15880), 4741 states have return successors, (58181), 15913 states have call predecessors, (58181), 15814 states have call successors, (58181) [2024-11-18 14:03:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93686 states to 93686 states and 190712 transitions. [2024-11-18 14:03:38,034 INFO L78 Accepts]: Start accepts. Automaton has 93686 states and 190712 transitions. Word has length 104 [2024-11-18 14:03:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:38,035 INFO L471 AbstractCegarLoop]: Abstraction has 93686 states and 190712 transitions. [2024-11-18 14:03:38,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:03:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 93686 states and 190712 transitions. [2024-11-18 14:03:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:03:38,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:38,036 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:38,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:03:38,036 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:38,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash -409599581, now seen corresponding path program 1 times [2024-11-18 14:03:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733591558] [2024-11-18 14:03:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:03:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733591558] [2024-11-18 14:03:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733591558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:38,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563289839] [2024-11-18 14:03:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:38,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:38,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:38,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:38,109 INFO L87 Difference]: Start difference. First operand 93686 states and 190712 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:03:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:44,586 INFO L93 Difference]: Finished difference Result 188250 states and 403628 transitions. [2024-11-18 14:03:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-18 14:03:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:45,471 INFO L225 Difference]: With dead ends: 188250 [2024-11-18 14:03:45,472 INFO L226 Difference]: Without dead ends: 94582 [2024-11-18 14:03:46,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:46,403 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 10 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:46,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2546 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94582 states. [2024-11-18 14:03:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94582 to 94262. [2024-11-18 14:03:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94262 states, 73592 states have (on average 1.5929312968800957) internal successors, (117227), 76630 states have internal predecessors, (117227), 15880 states have call successors, (15880), 4502 states have call predecessors, (15880), 4789 states have return successors, (58117), 15865 states have call predecessors, (58117), 15814 states have call successors, (58117) [2024-11-18 14:03:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94262 states to 94262 states and 191224 transitions. [2024-11-18 14:03:52,026 INFO L78 Accepts]: Start accepts. Automaton has 94262 states and 191224 transitions. Word has length 105 [2024-11-18 14:03:52,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:52,026 INFO L471 AbstractCegarLoop]: Abstraction has 94262 states and 191224 transitions. [2024-11-18 14:03:52,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:03:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 94262 states and 191224 transitions. [2024-11-18 14:03:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:03:52,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:52,028 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:03:52,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:03:52,028 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:52,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 505586579, now seen corresponding path program 1 times [2024-11-18 14:03:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388165285] [2024-11-18 14:03:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 14:03:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388165285] [2024-11-18 14:03:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388165285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:03:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388962554] [2024-11-18 14:03:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:52,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:03:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:03:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:52,152 INFO L87 Difference]: Start difference. First operand 94262 states and 191224 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)