./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product27.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_spec2_product27.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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:01:32,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:01:32,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:01:32,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:01:32,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:01:33,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:01:33,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:01:33,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:01:33,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:01:33,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:01:33,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:01:33,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:01:33,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:01:33,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:01:33,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:01:33,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:01:33,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:01:33,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:01:33,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:01:33,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:01:33,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:01:33,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:01:33,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:01:33,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:01:33,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:01:33,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:01:33,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:01:33,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:01:33,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:01:33,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:01:33,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:01:33,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:01:33,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:01:33,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:01:33,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:01:33,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:01:33,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:01:33,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:01:33,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:01:33,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:01:33,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:01:33,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:01:33,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2024-11-18 14:01:33,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:01:33,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:01:33,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:01:33,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:01:33,368 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:01:33,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2024-11-18 14:01:34,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:01:35,068 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:01:35,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2024-11-18 14:01:35,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d957f34ec/096520dc8c9d465281ebdf8c36c90613/FLAG7a295c108 [2024-11-18 14:01:35,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d957f34ec/096520dc8c9d465281ebdf8c36c90613 [2024-11-18 14:01:35,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:01:35,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:01:35,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:01:35,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:01:35,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:01:35,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7db7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35, skipping insertion in model container [2024-11-18 14:01:35,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:01:35,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2024-11-18 14:01:36,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:01:36,057 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:01:36,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-18 14:01:36,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [414] [2024-11-18 14:01:36,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [601] [2024-11-18 14:01:36,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [615] [2024-11-18 14:01:36,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [714] [2024-11-18 14:01:36,070 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [723] [2024-11-18 14:01:36,070 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2279] [2024-11-18 14:01:36,071 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2632] [2024-11-18 14:01:36,071 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3293] [2024-11-18 14:01:36,071 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3411] [2024-11-18 14:01:36,113 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2024-11-18 14:01:36,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:01:36,222 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:01:36,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36 WrapperNode [2024-11-18 14:01:36,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:01:36,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:01:36,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:01:36,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:01:36,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,345 INFO L138 Inliner]: procedures = 95, calls = 342, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1162 [2024-11-18 14:01:36,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:01:36,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:01:36,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:01:36,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:01:36,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,413 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:01:36,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:01:36,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:01:36,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:01:36,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:01:36,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (1/1) ... [2024-11-18 14:01:36,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:01:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:36,533 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 14:01:36,539 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 14:01:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:01:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:01:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:01:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 14:01:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 14:01:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:01:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:01:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 14:01:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 14:01:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:01:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:01:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:01:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:01:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:01:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:01:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:01:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:01:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 14:01:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 14:01:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:01:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:01:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:01:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:01:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:01:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:01:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:01:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:01:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:01:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:01:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:01:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:01:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:01:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:01:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:01:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:01:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:01:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:01:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:01:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:01:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:01:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:01:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:01:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:01:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:01:36,855 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:01:36,858 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:01:38,086 INFO L? ?]: Removed 461 outVars from TransFormulas that were not future-live. [2024-11-18 14:01:38,086 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:01:38,118 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:01:38,119 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:01:38,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:01:38 BoogieIcfgContainer [2024-11-18 14:01:38,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:01:38,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:01:38,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:01:38,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:01:38,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:01:35" (1/3) ... [2024-11-18 14:01:38,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169b4b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:01:38, skipping insertion in model container [2024-11-18 14:01:38,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:36" (2/3) ... [2024-11-18 14:01:38,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169b4b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:01:38, skipping insertion in model container [2024-11-18 14:01:38,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:01:38" (3/3) ... [2024-11-18 14:01:38,130 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2024-11-18 14:01:38,147 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:01:38,148 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:01:38,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:01:38,229 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;@2a30ebcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:01:38,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:01:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 14:01:38,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:01:38,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:38,263 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:38,263 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:38,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -289934377, now seen corresponding path program 1 times [2024-11-18 14:01:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293379200] [2024-11-18 14:01:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:38,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293379200] [2024-11-18 14:01:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293379200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:38,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425111737] [2024-11-18 14:01:38,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:38,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:38,883 INFO L87 Difference]: Start difference. First operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,067 INFO L93 Difference]: Finished difference Result 1118 states and 1871 transitions. [2024-11-18 14:01:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-18 14:01:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,090 INFO L225 Difference]: With dead ends: 1118 [2024-11-18 14:01:39,091 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 14:01:39,099 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 14:01:39,102 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 5 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:39,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2777 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 14:01:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 14:01:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 460 states have internal predecessors, (744), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2024-11-18 14:01:39,205 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 102 [2024-11-18 14:01:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,206 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2024-11-18 14:01:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2024-11-18 14:01:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 14:01:39,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,216 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:39,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:01:39,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1378724081, now seen corresponding path program 1 times [2024-11-18 14:01:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632429266] [2024-11-18 14:01:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632429266] [2024-11-18 14:01:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632429266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:39,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661382819] [2024-11-18 14:01:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:39,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:39,463 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,546 INFO L93 Difference]: Finished difference Result 1104 states and 1839 transitions. [2024-11-18 14:01:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-11-18 14:01:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,555 INFO L225 Difference]: With dead ends: 1104 [2024-11-18 14:01:39,555 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 14:01:39,559 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 14:01:39,560 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:39,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2756 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 14:01:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 14:01:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 460 states have internal predecessors, (743), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2024-11-18 14:01:39,608 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 105 [2024-11-18 14:01:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,609 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2024-11-18 14:01:39,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2024-11-18 14:01:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 14:01:39,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,615 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:01:39,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 776360423, now seen corresponding path program 1 times [2024-11-18 14:01:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574280588] [2024-11-18 14:01:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:39,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574280588] [2024-11-18 14:01:39,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574280588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:39,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:39,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:39,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445905596] [2024-11-18 14:01:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:39,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:39,807 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,865 INFO L93 Difference]: Finished difference Result 1104 states and 1838 transitions. [2024-11-18 14:01:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-18 14:01:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,871 INFO L225 Difference]: With dead ends: 1104 [2024-11-18 14:01:39,872 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 14:01:39,876 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 14:01:39,877 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 3 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2756 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 14:01:39,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2756 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 14:01:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 14:01:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 460 states have internal predecessors, (742), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2024-11-18 14:01:39,913 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 106 [2024-11-18 14:01:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2024-11-18 14:01:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2024-11-18 14:01:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:01:39,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:39,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:01:39,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -774044371, now seen corresponding path program 1 times [2024-11-18 14:01:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419878283] [2024-11-18 14:01:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419878283] [2024-11-18 14:01:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419878283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067989647] [2024-11-18 14:01:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:40,066 INFO L87 Difference]: Start difference. First operand 561 states and 929 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,111 INFO L93 Difference]: Finished difference Result 1104 states and 1837 transitions. [2024-11-18 14:01:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:40,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-18 14:01:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,117 INFO L225 Difference]: With dead ends: 1104 [2024-11-18 14:01:40,117 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 14:01:40,120 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 14:01:40,122 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 2 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:40,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2756 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 14:01:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 14:01:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 460 states have internal predecessors, (741), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2024-11-18 14:01:40,157 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 107 [2024-11-18 14:01:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,157 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2024-11-18 14:01:40,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2024-11-18 14:01:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 14:01:40,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:40,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:01:40,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1648953309, now seen corresponding path program 1 times [2024-11-18 14:01:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648774999] [2024-11-18 14:01:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648774999] [2024-11-18 14:01:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648774999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087064219] [2024-11-18 14:01:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:40,291 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,333 INFO L93 Difference]: Finished difference Result 1104 states and 1836 transitions. [2024-11-18 14:01:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:40,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-18 14:01:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,338 INFO L225 Difference]: With dead ends: 1104 [2024-11-18 14:01:40,338 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 14:01:40,341 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 14:01:40,344 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 1 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:40,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2756 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 14:01:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 14:01:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 460 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2024-11-18 14:01:40,369 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 108 [2024-11-18 14:01:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,369 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2024-11-18 14:01:40,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2024-11-18 14:01:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-18 14:01:40,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,373 INFO L215 NwaCegarLoop]: trace histogram [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 14:01:40,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:01:40,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1236640105, now seen corresponding path program 1 times [2024-11-18 14:01:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60289362] [2024-11-18 14:01:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60289362] [2024-11-18 14:01:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60289362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 14:01:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738814294] [2024-11-18 14:01:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:01:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:01:40,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:01:40,652 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,786 INFO L93 Difference]: Finished difference Result 1070 states and 1768 transitions. [2024-11-18 14:01:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:01:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2024-11-18 14:01:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,793 INFO L225 Difference]: With dead ends: 1070 [2024-11-18 14:01:40,793 INFO L226 Difference]: Without dead ends: 576 [2024-11-18 14:01:40,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:40,798 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 91 mSDsluCounter, 6322 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7237 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:40,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7237 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-18 14:01:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2024-11-18 14:01:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 472 states have internal predecessors, (755), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2024-11-18 14:01:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 946 transitions. [2024-11-18 14:01:40,833 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 946 transitions. Word has length 109 [2024-11-18 14:01:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,834 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 946 transitions. [2024-11-18 14:01:40,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 946 transitions. [2024-11-18 14:01:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-18 14:01:40,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,839 INFO L215 NwaCegarLoop]: trace histogram [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 14:01:40,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:01:40,840 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1222389960, now seen corresponding path program 1 times [2024-11-18 14:01:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13029760] [2024-11-18 14:01:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13029760] [2024-11-18 14:01:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13029760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064826311] [2024-11-18 14:01:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:40,973 INFO L87 Difference]: Start difference. First operand 574 states and 946 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), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,013 INFO L93 Difference]: Finished difference Result 1122 states and 1862 transitions. [2024-11-18 14:01:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:41,014 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), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-18 14:01:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,019 INFO L225 Difference]: With dead ends: 1122 [2024-11-18 14:01:41,019 INFO L226 Difference]: Without dead ends: 555 [2024-11-18 14:01:41,022 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 14:01:41,022 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 0 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:41,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2758 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-18 14:01:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2024-11-18 14:01:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 435 states have (on average 1.6689655172413793) internal successors, (726), 454 states have internal predecessors, (726), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 913 transitions. [2024-11-18 14:01:41,042 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 913 transitions. Word has length 109 [2024-11-18 14:01:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,042 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 913 transitions. [2024-11-18 14:01:41,042 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), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 913 transitions. [2024-11-18 14:01:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 14:01:41,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,046 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:41,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:01:41,046 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -338982854, now seen corresponding path program 1 times [2024-11-18 14:01:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316268384] [2024-11-18 14:01:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316268384] [2024-11-18 14:01:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316268384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85290260] [2024-11-18 14:01:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:41,299 INFO L87 Difference]: Start difference. First operand 555 states and 913 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,503 INFO L93 Difference]: Finished difference Result 1067 states and 1760 transitions. [2024-11-18 14:01:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-18 14:01:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,509 INFO L225 Difference]: With dead ends: 1067 [2024-11-18 14:01:41,509 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:41,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:41,512 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 55 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:41,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4321 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:01:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-18 14:01:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 435 states have (on average 1.6597701149425288) internal successors, (722), 454 states have internal predecessors, (722), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 909 transitions. [2024-11-18 14:01:41,535 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 909 transitions. Word has length 110 [2024-11-18 14:01:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,536 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 909 transitions. [2024-11-18 14:01:41,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 909 transitions. [2024-11-18 14:01:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 14:01:41,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,540 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:41,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:01:41,540 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1981830252, now seen corresponding path program 1 times [2024-11-18 14:01:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258547407] [2024-11-18 14:01:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258547407] [2024-11-18 14:01:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258547407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440153945] [2024-11-18 14:01:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:41,708 INFO L87 Difference]: Start difference. First operand 555 states and 909 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,884 INFO L93 Difference]: Finished difference Result 1067 states and 1756 transitions. [2024-11-18 14:01:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:41,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-18 14:01:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,889 INFO L225 Difference]: With dead ends: 1067 [2024-11-18 14:01:41,890 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:41,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:41,894 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 54 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:41,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4321 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-18 14:01:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 435 states have (on average 1.650574712643678) internal successors, (718), 454 states have internal predecessors, (718), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 905 transitions. [2024-11-18 14:01:41,915 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 905 transitions. Word has length 111 [2024-11-18 14:01:41,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,915 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 905 transitions. [2024-11-18 14:01:41,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 905 transitions. [2024-11-18 14:01:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 14:01:41,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,920 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:41,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:01:41,920 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -838651393, now seen corresponding path program 1 times [2024-11-18 14:01:41,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424186122] [2024-11-18 14:01:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:42,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424186122] [2024-11-18 14:01:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424186122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410557946] [2024-11-18 14:01:42,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:42,118 INFO L87 Difference]: Start difference. First operand 555 states and 905 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,281 INFO L93 Difference]: Finished difference Result 1067 states and 1752 transitions. [2024-11-18 14:01:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-18 14:01:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,288 INFO L225 Difference]: With dead ends: 1067 [2024-11-18 14:01:42,288 INFO L226 Difference]: Without dead ends: 564 [2024-11-18 14:01:42,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:42,291 INFO L432 NwaCegarLoop]: 869 mSDtfsCounter, 53 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:42,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4303 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-18 14:01:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 555. [2024-11-18 14:01:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 435 states have (on average 1.6413793103448275) internal successors, (714), 454 states have internal predecessors, (714), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 901 transitions. [2024-11-18 14:01:42,312 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 901 transitions. Word has length 112 [2024-11-18 14:01:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,312 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 901 transitions. [2024-11-18 14:01:42,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 901 transitions. [2024-11-18 14:01:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 14:01:42,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:42,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:01:42,317 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash -359403905, now seen corresponding path program 1 times [2024-11-18 14:01:42,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982569155] [2024-11-18 14:01:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982569155] [2024-11-18 14:01:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982569155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043111115] [2024-11-18 14:01:42,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:42,550 INFO L87 Difference]: Start difference. First operand 555 states and 901 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,618 INFO L93 Difference]: Finished difference Result 1058 states and 1734 transitions. [2024-11-18 14:01:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2024-11-18 14:01:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,624 INFO L225 Difference]: With dead ends: 1058 [2024-11-18 14:01:42,625 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 14:01:42,627 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 14:01:42,642 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 84 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:42,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5267 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 14:01:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 14:01:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.642512077294686) internal successors, (680), 433 states have internal predecessors, (680), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 867 transitions. [2024-11-18 14:01:42,660 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 867 transitions. Word has length 112 [2024-11-18 14:01:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,661 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 867 transitions. [2024-11-18 14:01:42,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 867 transitions. [2024-11-18 14:01:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 14:01:42,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,665 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:42,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:01:42,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash 169486929, now seen corresponding path program 1 times [2024-11-18 14:01:42,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878983255] [2024-11-18 14:01:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:42,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878983255] [2024-11-18 14:01:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878983255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683411450] [2024-11-18 14:01:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:42,812 INFO L87 Difference]: Start difference. First operand 534 states and 867 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,884 INFO L93 Difference]: Finished difference Result 1037 states and 1700 transitions. [2024-11-18 14:01:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-18 14:01:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,890 INFO L225 Difference]: With dead ends: 1037 [2024-11-18 14:01:42,891 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 14:01:42,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:42,894 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 17 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:42,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4241 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 14:01:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 14:01:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.6400966183574879) internal successors, (679), 433 states have internal predecessors, (679), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 866 transitions. [2024-11-18 14:01:42,916 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 866 transitions. Word has length 113 [2024-11-18 14:01:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,917 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 866 transitions. [2024-11-18 14:01:42,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 866 transitions. [2024-11-18 14:01:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:01:42,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:42,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:01:42,922 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash -394240060, now seen corresponding path program 1 times [2024-11-18 14:01:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098819163] [2024-11-18 14:01:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098819163] [2024-11-18 14:01:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098819163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265779294] [2024-11-18 14:01:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:43,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:43,075 INFO L87 Difference]: Start difference. First operand 534 states and 866 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:43,146 INFO L93 Difference]: Finished difference Result 1037 states and 1699 transitions. [2024-11-18 14:01:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-18 14:01:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:43,167 INFO L225 Difference]: With dead ends: 1037 [2024-11-18 14:01:43,168 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 14:01:43,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:43,171 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 16 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:43,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4241 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 14:01:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 14:01:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.6376811594202898) internal successors, (678), 433 states have internal predecessors, (678), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 865 transitions. [2024-11-18 14:01:43,191 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 865 transitions. Word has length 114 [2024-11-18 14:01:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:43,192 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 865 transitions. [2024-11-18 14:01:43,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:01:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 865 transitions. [2024-11-18 14:01:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-18 14:01:43,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:43,195 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:43,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:01:43,196 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:43,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1853815862, now seen corresponding path program 1 times [2024-11-18 14:01:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:43,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174339547] [2024-11-18 14:01:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:43,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:01:43,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174339547] [2024-11-18 14:01:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174339547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:43,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 14:01:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709762125] [2024-11-18 14:01:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:43,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:01:43,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:01:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:43,435 INFO L87 Difference]: Start difference. First operand 534 states and 865 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:43,535 INFO L93 Difference]: Finished difference Result 1031 states and 1687 transitions. [2024-11-18 14:01:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:01:43,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2024-11-18 14:01:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:43,541 INFO L225 Difference]: With dead ends: 1031 [2024-11-18 14:01:43,541 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 14:01:43,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:43,544 INFO L432 NwaCegarLoop]: 849 mSDtfsCounter, 6 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7619 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:43,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7619 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 14:01:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 14:01:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.6352657004830917) internal successors, (677), 433 states have internal predecessors, (677), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 864 transitions. [2024-11-18 14:01:43,564 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 864 transitions. Word has length 115 [2024-11-18 14:01:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:43,564 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 864 transitions. [2024-11-18 14:01:43,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:01:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 864 transitions. [2024-11-18 14:01:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 14:01:43,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:43,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:43,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:01:43,568 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:43,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1773056601, now seen corresponding path program 1 times [2024-11-18 14:01:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772002081] [2024-11-18 14:01:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:43,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772002081] [2024-11-18 14:01:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772002081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007497506] [2024-11-18 14:01:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:43,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:43,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:43,736 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 14:01:43,738 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 14:01:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:44,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:01:44,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:44,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:44,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007497506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:44,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:44,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-18 14:01:44,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153686566] [2024-11-18 14:01:44,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:44,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:44,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:01:44,244 INFO L87 Difference]: Start difference. First operand 534 states and 864 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:44,772 INFO L93 Difference]: Finished difference Result 1031 states and 1709 transitions. [2024-11-18 14:01:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-11-18 14:01:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:44,779 INFO L225 Difference]: With dead ends: 1031 [2024-11-18 14:01:44,779 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:44,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:44,783 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 820 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:44,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2170 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:01:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 421 states have (on average 1.6365795724465557) internal successors, (689), 440 states have internal predecessors, (689), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2024-11-18 14:01:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 877 transitions. [2024-11-18 14:01:44,805 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 877 transitions. Word has length 116 [2024-11-18 14:01:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:44,805 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 877 transitions. [2024-11-18 14:01:44,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 877 transitions. [2024-11-18 14:01:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:01:44,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:44,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:44,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:01:45,011 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,SelfDestructingSolverStorable14 [2024-11-18 14:01:45,012 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:45,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1773368063, now seen corresponding path program 1 times [2024-11-18 14:01:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846528198] [2024-11-18 14:01:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:45,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846528198] [2024-11-18 14:01:45,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846528198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:45,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538083759] [2024-11-18 14:01:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:45,149 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 14:01:45,150 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 14:01:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:45,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:01:45,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:45,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538083759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:45,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-18 14:01:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579825193] [2024-11-18 14:01:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:45,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:01:45,649 INFO L87 Difference]: Start difference. First operand 542 states and 877 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:46,169 INFO L93 Difference]: Finished difference Result 1047 states and 1732 transitions. [2024-11-18 14:01:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:46,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-11-18 14:01:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:46,175 INFO L225 Difference]: With dead ends: 1047 [2024-11-18 14:01:46,176 INFO L226 Difference]: Without dead ends: 550 [2024-11-18 14:01:46,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:46,180 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 811 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:46,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 2167 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:01:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-18 14:01:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-18 14:01:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 428 states have (on average 1.6378504672897196) internal successors, (701), 447 states have internal predecessors, (701), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2024-11-18 14:01:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 890 transitions. [2024-11-18 14:01:46,201 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 890 transitions. Word has length 118 [2024-11-18 14:01:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:46,201 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 890 transitions. [2024-11-18 14:01:46,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 890 transitions. [2024-11-18 14:01:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 14:01:46,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:46,205 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:46,226 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 14:01:46,406 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,SelfDestructingSolverStorable15 [2024-11-18 14:01:46,406 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:46,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1378780391, now seen corresponding path program 1 times [2024-11-18 14:01:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632175278] [2024-11-18 14:01:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632175278] [2024-11-18 14:01:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632175278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:46,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849243273] [2024-11-18 14:01:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:46,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:46,553 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 14:01:46,555 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 14:01:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:46,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:01:46,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:47,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849243273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:47,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:47,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-18 14:01:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977018515] [2024-11-18 14:01:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:47,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:01:47,017 INFO L87 Difference]: Start difference. First operand 550 states and 890 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:47,573 INFO L93 Difference]: Finished difference Result 1063 states and 1755 transitions. [2024-11-18 14:01:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:47,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2024-11-18 14:01:47,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:47,579 INFO L225 Difference]: With dead ends: 1063 [2024-11-18 14:01:47,580 INFO L226 Difference]: Without dead ends: 558 [2024-11-18 14:01:47,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:47,583 INFO L432 NwaCegarLoop]: 840 mSDtfsCounter, 804 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:47,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2164 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:01:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-18 14:01:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2024-11-18 14:01:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.639080459770115) internal successors, (713), 454 states have internal predecessors, (713), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (94), 89 states have call predecessors, (94), 91 states have call successors, (94) [2024-11-18 14:01:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 903 transitions. [2024-11-18 14:01:47,608 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 903 transitions. Word has length 120 [2024-11-18 14:01:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:47,608 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 903 transitions. [2024-11-18 14:01:47,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 903 transitions. [2024-11-18 14:01:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 14:01:47,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:47,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:47,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:01:47,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:47,817 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:47,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash -195960905, now seen corresponding path program 1 times [2024-11-18 14:01:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733814950] [2024-11-18 14:01:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:47,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733814950] [2024-11-18 14:01:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733814950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838060168] [2024-11-18 14:01:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:47,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:47,959 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 14:01:47,960 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 14:01:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:48,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:01:48,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:01:48,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838060168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-18 14:01:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514498864] [2024-11-18 14:01:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:48,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:01:48,394 INFO L87 Difference]: Start difference. First operand 558 states and 903 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:48,893 INFO L93 Difference]: Finished difference Result 1079 states and 1778 transitions. [2024-11-18 14:01:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-18 14:01:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:48,899 INFO L225 Difference]: With dead ends: 1079 [2024-11-18 14:01:48,900 INFO L226 Difference]: Without dead ends: 566 [2024-11-18 14:01:48,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:01:48,903 INFO L432 NwaCegarLoop]: 837 mSDtfsCounter, 809 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:48,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2161 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:01:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-18 14:01:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-18 14:01:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6402714932126696) internal successors, (725), 461 states have internal predecessors, (725), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-18 14:01:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2024-11-18 14:01:48,926 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 122 [2024-11-18 14:01:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:48,926 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2024-11-18 14:01:48,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:01:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2024-11-18 14:01:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:01:48,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:48,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:48,951 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 14:01:49,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:01:49,137 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:49,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1421832665, now seen corresponding path program 1 times [2024-11-18 14:01:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:49,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273808080] [2024-11-18 14:01:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:01:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273808080] [2024-11-18 14:01:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273808080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110176721] [2024-11-18 14:01:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:49,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:49,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:49,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:01:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:49,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:01:49,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:01:49,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:49,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110176721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:49,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:49,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-18 14:01:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144971960] [2024-11-18 14:01:49,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:49,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:49,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:01:49,988 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:01:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:50,506 INFO L93 Difference]: Finished difference Result 615 states and 988 transitions. [2024-11-18 14:01:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:01:50,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2024-11-18 14:01:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:50,513 INFO L225 Difference]: With dead ends: 615 [2024-11-18 14:01:50,513 INFO L226 Difference]: Without dead ends: 600 [2024-11-18 14:01:50,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:01:50,515 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 841 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:50,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2194 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:01:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-18 14:01:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 569. [2024-11-18 14:01:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6359550561797753) internal successors, (728), 464 states have internal predecessors, (728), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-18 14:01:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 919 transitions. [2024-11-18 14:01:50,550 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 919 transitions. Word has length 124 [2024-11-18 14:01:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:50,551 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 919 transitions. [2024-11-18 14:01:50,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 14:01:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 919 transitions. [2024-11-18 14:01:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:01:50,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:50,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:50,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:01:50,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:50,758 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -796587820, now seen corresponding path program 1 times [2024-11-18 14:01:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169384595] [2024-11-18 14:01:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:01:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:51,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169384595] [2024-11-18 14:01:51,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169384595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:51,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594297824] [2024-11-18 14:01:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:51,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:51,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:51,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:01:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:51,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 14:01:51,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:01:51,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594297824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-18 14:01:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383048683] [2024-11-18 14:01:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:51,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:01:51,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:01:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:01:51,505 INFO L87 Difference]: Start difference. First operand 569 states and 919 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 14:01:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:51,535 INFO L93 Difference]: Finished difference Result 584 states and 937 transitions. [2024-11-18 14:01:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:01:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 130 [2024-11-18 14:01:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:51,541 INFO L225 Difference]: With dead ends: 584 [2024-11-18 14:01:51,541 INFO L226 Difference]: Without dead ends: 569 [2024-11-18 14:01:51,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:01:51,543 INFO L432 NwaCegarLoop]: 861 mSDtfsCounter, 0 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:51,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3440 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-18 14:01:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-18 14:01:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6337078651685393) internal successors, (727), 464 states have internal predecessors, (727), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2024-11-18 14:01:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 918 transitions. [2024-11-18 14:01:51,570 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 918 transitions. Word has length 130 [2024-11-18 14:01:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:51,571 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 918 transitions. [2024-11-18 14:01:51,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-18 14:01:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 918 transitions. [2024-11-18 14:01:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:01:51,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:51,575 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:51,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:01:51,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:51,776 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:51,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1241343043, now seen corresponding path program 1 times [2024-11-18 14:01:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681226187] [2024-11-18 14:01:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:01:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681226187] [2024-11-18 14:01:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681226187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919151981] [2024-11-18 14:01:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:52,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:52,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:52,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:01:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:52,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 14:01:52,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:01:52,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919151981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:52,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-18 14:01:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204141306] [2024-11-18 14:01:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:01:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:01:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:01:52,679 INFO L87 Difference]: Start difference. First operand 569 states and 918 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-18 14:01:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:55,919 INFO L93 Difference]: Finished difference Result 1952 states and 3219 transitions. [2024-11-18 14:01:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:01:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2024-11-18 14:01:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:55,931 INFO L225 Difference]: With dead ends: 1952 [2024-11-18 14:01:55,931 INFO L226 Difference]: Without dead ends: 1428 [2024-11-18 14:01:55,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:01:55,935 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 2383 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 4736 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 5250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 4736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:55,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 2771 Invalid, 5250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 4736 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 14:01:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-18 14:01:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1313. [2024-11-18 14:01:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1032 states have (on average 1.6560077519379846) internal successors, (1709), 1071 states have internal predecessors, (1709), 214 states have call successors, (214), 61 states have call predecessors, (214), 66 states have return successors, (233), 206 states have call predecessors, (233), 209 states have call successors, (233) [2024-11-18 14:01:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2156 transitions. [2024-11-18 14:01:56,006 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2156 transitions. Word has length 141 [2024-11-18 14:01:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:56,006 INFO L471 AbstractCegarLoop]: Abstraction has 1313 states and 2156 transitions. [2024-11-18 14:01:56,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-18 14:01:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2156 transitions. [2024-11-18 14:01:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:01:56,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:56,011 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:56,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:01:56,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:56,216 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:56,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:56,216 INFO L85 PathProgramCache]: Analyzing trace with hash 399170301, now seen corresponding path program 1 times [2024-11-18 14:01:56,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:56,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752360695] [2024-11-18 14:01:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:56,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:01:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:56,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752360695] [2024-11-18 14:01:56,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752360695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:01:56,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775689621] [2024-11-18 14:01:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:56,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:01:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:56,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:01:56,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:01:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:56,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:01:56,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:01:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:01:57,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:01:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775689621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:57,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:01:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-18 14:01:57,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536056650] [2024-11-18 14:01:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:57,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:01:57,004 INFO L87 Difference]: Start difference. First operand 1313 states and 2156 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 14:01:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:59,391 INFO L93 Difference]: Finished difference Result 2840 states and 4687 transitions. [2024-11-18 14:01:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:01:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2024-11-18 14:01:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:59,407 INFO L225 Difference]: With dead ends: 2840 [2024-11-18 14:01:59,407 INFO L226 Difference]: Without dead ends: 1572 [2024-11-18 14:01:59,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:01:59,415 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 2133 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:59,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 2046 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:01:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-18 14:01:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1384. [2024-11-18 14:01:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1084 states have (on average 1.6429889298892988) internal successors, (1781), 1129 states have internal predecessors, (1781), 222 states have call successors, (222), 66 states have call predecessors, (222), 77 states have return successors, (259), 214 states have call predecessors, (259), 217 states have call successors, (259) [2024-11-18 14:01:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2262 transitions. [2024-11-18 14:01:59,485 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2262 transitions. Word has length 143 [2024-11-18 14:01:59,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:59,485 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 2262 transitions. [2024-11-18 14:01:59,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 14:01:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2262 transitions. [2024-11-18 14:01:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 14:01:59,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:59,490 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:01:59,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:01:59,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 14:01:59,691 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:59,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1095795152, now seen corresponding path program 1 times [2024-11-18 14:01:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:59,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848906410] [2024-11-18 14:01:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:00,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848906410] [2024-11-18 14:02:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848906410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739555245] [2024-11-18 14:02:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:00,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:00,080 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:00,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:02:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:00,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:02:00,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:02:00,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:00,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739555245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:00,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:00,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-18 14:02:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925744681] [2024-11-18 14:02:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:00,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:02:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:00,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:02:00,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:02:00,427 INFO L87 Difference]: Start difference. First operand 1384 states and 2262 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:00,521 INFO L93 Difference]: Finished difference Result 3429 states and 5674 transitions. [2024-11-18 14:02:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:02:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2024-11-18 14:02:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:00,537 INFO L225 Difference]: With dead ends: 3429 [2024-11-18 14:02:00,537 INFO L226 Difference]: Without dead ends: 2094 [2024-11-18 14:02:00,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:02:00,544 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 804 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:00,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2389 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2024-11-18 14:02:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1380. [2024-11-18 14:02:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1082 states have (on average 1.6423290203327172) internal successors, (1777), 1125 states have internal predecessors, (1777), 222 states have call successors, (222), 66 states have call predecessors, (222), 75 states have return successors, (250), 214 states have call predecessors, (250), 217 states have call successors, (250) [2024-11-18 14:02:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2249 transitions. [2024-11-18 14:02:00,667 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2249 transitions. Word has length 148 [2024-11-18 14:02:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:00,668 INFO L471 AbstractCegarLoop]: Abstraction has 1380 states and 2249 transitions. [2024-11-18 14:02:00,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:02:00,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2249 transitions. [2024-11-18 14:02:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 14:02:00,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:00,677 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:00,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:02:00,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:00,878 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:00,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1149784302, now seen corresponding path program 1 times [2024-11-18 14:02:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285147753] [2024-11-18 14:02:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285147753] [2024-11-18 14:02:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285147753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552235401] [2024-11-18 14:02:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:01,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:01,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:01,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:02:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:01,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:02:01,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:01,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:01,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552235401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:01,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:01,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:01,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901892611] [2024-11-18 14:02:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:01,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:01,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:01,703 INFO L87 Difference]: Start difference. First operand 1380 states and 2249 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:03,284 INFO L93 Difference]: Finished difference Result 4316 states and 7155 transitions. [2024-11-18 14:02:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2024-11-18 14:02:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:03,309 INFO L225 Difference]: With dead ends: 4316 [2024-11-18 14:02:03,309 INFO L226 Difference]: Without dead ends: 2981 [2024-11-18 14:02:03,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:03,318 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 1915 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:03,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 920 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 14:02:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2024-11-18 14:02:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2867. [2024-11-18 14:02:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2218 states have (on average 1.645175834084761) internal successors, (3649), 2314 states have internal predecessors, (3649), 495 states have call successors, (495), 127 states have call predecessors, (495), 153 states have return successors, (603), 487 states have call predecessors, (603), 490 states have call successors, (603) [2024-11-18 14:02:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4747 transitions. [2024-11-18 14:02:03,529 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4747 transitions. Word has length 148 [2024-11-18 14:02:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:03,530 INFO L471 AbstractCegarLoop]: Abstraction has 2867 states and 4747 transitions. [2024-11-18 14:02:03,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4747 transitions. [2024-11-18 14:02:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 14:02:03,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:03,543 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:03,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:02:03,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 14:02:03,744 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:03,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1283436603, now seen corresponding path program 1 times [2024-11-18 14:02:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473844931] [2024-11-18 14:02:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:04,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:04,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473844931] [2024-11-18 14:02:04,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473844931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171327211] [2024-11-18 14:02:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:04,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:04,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:04,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:04,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:02:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:04,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:02:04,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:04,481 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171327211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:04,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942315566] [2024-11-18 14:02:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:04,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:04,484 INFO L87 Difference]: Start difference. First operand 2867 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:06,079 INFO L93 Difference]: Finished difference Result 9206 states and 15557 transitions. [2024-11-18 14:02:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2024-11-18 14:02:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:06,131 INFO L225 Difference]: With dead ends: 9206 [2024-11-18 14:02:06,131 INFO L226 Difference]: Without dead ends: 6384 [2024-11-18 14:02:06,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:06,153 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 1922 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:06,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 880 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 14:02:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2024-11-18 14:02:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6141. [2024-11-18 14:02:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 4669 states have (on average 1.6412508031698436) internal successors, (7663), 4893 states have internal predecessors, (7663), 1154 states have call successors, (1154), 249 states have call predecessors, (1154), 317 states have return successors, (1548), 1150 states have call predecessors, (1548), 1149 states have call successors, (1548) [2024-11-18 14:02:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 10365 transitions. [2024-11-18 14:02:06,544 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 10365 transitions. Word has length 149 [2024-11-18 14:02:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:06,545 INFO L471 AbstractCegarLoop]: Abstraction has 6141 states and 10365 transitions. [2024-11-18 14:02:06,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 10365 transitions. [2024-11-18 14:02:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 14:02:06,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:06,551 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:06,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:02:06,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 14:02:06,752 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:06,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1131694544, now seen corresponding path program 1 times [2024-11-18 14:02:06,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64202309] [2024-11-18 14:02:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:07,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:07,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64202309] [2024-11-18 14:02:07,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64202309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:07,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737547072] [2024-11-18 14:02:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:07,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:07,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:02:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:07,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:02:07,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:07,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737547072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287781468] [2024-11-18 14:02:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:07,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:07,512 INFO L87 Difference]: Start difference. First operand 6141 states and 10365 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:09,349 INFO L93 Difference]: Finished difference Result 20128 states and 35020 transitions. [2024-11-18 14:02:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-18 14:02:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:09,460 INFO L225 Difference]: With dead ends: 20128 [2024-11-18 14:02:09,460 INFO L226 Difference]: Without dead ends: 14032 [2024-11-18 14:02:09,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:09,498 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 1910 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:09,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 874 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 14:02:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2024-11-18 14:02:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 13530. [2024-11-18 14:02:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 10074 states have (on average 1.632817153067302) internal successors, (16449), 10612 states have internal predecessors, (16449), 2790 states have call successors, (2790), 493 states have call predecessors, (2790), 665 states have return successors, (4214), 2806 states have call predecessors, (4214), 2785 states have call successors, (4214) [2024-11-18 14:02:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 23453 transitions. [2024-11-18 14:02:10,532 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 23453 transitions. Word has length 150 [2024-11-18 14:02:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:10,533 INFO L471 AbstractCegarLoop]: Abstraction has 13530 states and 23453 transitions. [2024-11-18 14:02:10,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 23453 transitions. [2024-11-18 14:02:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 14:02:10,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:10,544 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:10,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 14:02:10,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 14:02:10,745 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:10,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 722661917, now seen corresponding path program 1 times [2024-11-18 14:02:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081356534] [2024-11-18 14:02:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:10,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081356534] [2024-11-18 14:02:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081356534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361560001] [2024-11-18 14:02:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:11,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:11,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:11,124 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:11,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:02:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:11,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:02:11,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:11,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361560001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086300303] [2024-11-18 14:02:11,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:11,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:11,534 INFO L87 Difference]: Start difference. First operand 13530 states and 23453 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:14,775 INFO L93 Difference]: Finished difference Result 45121 states and 82187 transitions. [2024-11-18 14:02:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2024-11-18 14:02:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:15,083 INFO L225 Difference]: With dead ends: 45121 [2024-11-18 14:02:15,083 INFO L226 Difference]: Without dead ends: 31636 [2024-11-18 14:02:15,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:15,179 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 1898 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:15,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 871 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 14:02:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31636 states. [2024-11-18 14:02:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31636 to 30671. [2024-11-18 14:02:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30671 states, 22307 states have (on average 1.6211503115613932) internal successors, (36163), 23627 states have internal predecessors, (36163), 6950 states have call successors, (6950), 981 states have call predecessors, (6950), 1413 states have return successors, (12120), 7042 states have call predecessors, (12120), 6945 states have call successors, (12120) [2024-11-18 14:02:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30671 states to 30671 states and 55233 transitions. [2024-11-18 14:02:18,000 INFO L78 Accepts]: Start accepts. Automaton has 30671 states and 55233 transitions. Word has length 151 [2024-11-18 14:02:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:18,001 INFO L471 AbstractCegarLoop]: Abstraction has 30671 states and 55233 transitions. [2024-11-18 14:02:18,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 30671 states and 55233 transitions. [2024-11-18 14:02:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:02:18,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:18,009 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:18,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:02:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:02:18,211 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:18,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash 927556274, now seen corresponding path program 1 times [2024-11-18 14:02:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856450661] [2024-11-18 14:02:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 14:02:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856450661] [2024-11-18 14:02:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856450661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819472233] [2024-11-18 14:02:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:18,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:18,582 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:02:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:18,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:02:18,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:02:19,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:19,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819472233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:19,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:19,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:19,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013877410] [2024-11-18 14:02:19,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:19,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:19,046 INFO L87 Difference]: Start difference. First operand 30671 states and 55233 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:25,415 INFO L93 Difference]: Finished difference Result 103789 states and 203271 transitions. [2024-11-18 14:02:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2024-11-18 14:02:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:26,708 INFO L225 Difference]: With dead ends: 103789 [2024-11-18 14:02:26,709 INFO L226 Difference]: Without dead ends: 73153 [2024-11-18 14:02:26,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:26,957 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 1873 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:26,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 965 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 14:02:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73153 states. [2024-11-18 14:02:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73153 to 71508. [2024-11-18 14:02:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71508 states, 50732 states have (on average 1.607328707718994) internal successors, (81543), 54026 states have internal predecessors, (81543), 17730 states have call successors, (17730), 1954 states have call predecessors, (17730), 3045 states have return successors, (36793), 18081 states have call predecessors, (36793), 17725 states have call successors, (36793) [2024-11-18 14:02:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71508 states to 71508 states and 136066 transitions. [2024-11-18 14:02:34,537 INFO L78 Accepts]: Start accepts. Automaton has 71508 states and 136066 transitions. Word has length 152 [2024-11-18 14:02:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:34,538 INFO L471 AbstractCegarLoop]: Abstraction has 71508 states and 136066 transitions. [2024-11-18 14:02:34,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 71508 states and 136066 transitions. [2024-11-18 14:02:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 14:02:34,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:34,576 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:02:34,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:02:34,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:34,778 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:34,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -674380968, now seen corresponding path program 1 times [2024-11-18 14:02:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104655827] [2024-11-18 14:02:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 14:02:35,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:35,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104655827] [2024-11-18 14:02:35,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104655827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:02:35,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95293748] [2024-11-18 14:02:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:35,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:02:35,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:02:35,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:02:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:02:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:35,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:02:35,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:02:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:02:35,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:02:35,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95293748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:35,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:02:35,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 14:02:35,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085633256] [2024-11-18 14:02:35,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:35,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:35,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:35,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:35,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:35,943 INFO L87 Difference]: Start difference. First operand 71508 states and 136066 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:02:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:41,686 INFO L93 Difference]: Finished difference Result 145850 states and 287406 transitions. [2024-11-18 14:02:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:41,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 207 [2024-11-18 14:02:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:42,930 INFO L225 Difference]: With dead ends: 145850 [2024-11-18 14:02:42,931 INFO L226 Difference]: Without dead ends: 74388