./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:01:31,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:01:32,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:01:32,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:01:32,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:01:32,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:01:32,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:01:32,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:01:32,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:01:32,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:01:32,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:01:32,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:01:32,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:01:32,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:01:32,084 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:01:32,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:01:32,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:01:32,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:01:32,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:01:32,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:01:32,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:01:32,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:01:32,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:01:32,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:01:32,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:01:32,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:01:32,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:01:32,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:01:32,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:01:32,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:01:32,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:01:32,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:01:32,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:01:32,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:01:32,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:01:32,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:01:32,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:01:32,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:01:32,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:01:32,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:01:32,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:01:32,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:01:32,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b0b488ad07619ca8d4ed9273747459006984c072c0894ad54004ae965569d [2024-11-18 14:01:32,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:01:32,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:01:32,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:01:32,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:01:32,419 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:01:32,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2024-11-18 14:01:33,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:01:34,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:01:34,244 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product26.cil.c [2024-11-18 14:01:34,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb31ec32/0ced399a3ad84327a5712712cafb0b7e/FLAG184ffcbb0 [2024-11-18 14:01:34,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb31ec32/0ced399a3ad84327a5712712cafb0b7e [2024-11-18 14:01:34,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:01:34,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:01:34,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:01:34,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:01:34,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:01:34,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:01:34" (1/1) ... [2024-11-18 14:01:34,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c61bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:34, skipping insertion in model container [2024-11-18 14:01:34,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:01:34" (1/1) ... [2024-11-18 14:01:34,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:01:35,041 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_product26.cil.c[70298,70311] [2024-11-18 14:01:35,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:01:35,071 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:01:35,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-18 14:01:35,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [412] [2024-11-18 14:01:35,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1940] [2024-11-18 14:01:35,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2058] [2024-11-18 14:01:35,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2070] [2024-11-18 14:01:35,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2436] [2024-11-18 14:01:35,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2471] [2024-11-18 14:01:35,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3132] [2024-11-18 14:01:35,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3314] [2024-11-18 14:01:35,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3323] [2024-11-18 14:01:35,192 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_product26.cil.c[70298,70311] [2024-11-18 14:01:35,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:01:35,232 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:01:35,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35 WrapperNode [2024-11-18 14:01:35,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:01:35,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:01:35,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:01:35,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:01:35,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,378 INFO L138 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 860 [2024-11-18 14:01:35,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:01:35,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:01:35,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:01:35,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:01:35,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,440 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 14:01:35,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:01:35,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:01:35,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:01:35,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:01:35,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (1/1) ... [2024-11-18 14:01:35,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:01:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:01:35,562 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 14:01:35,569 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 14:01:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:01:35,617 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:01:35,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:01:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 14:01:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 14:01:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:01:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:01:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:01:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:01:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:01:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:01:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:01:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:01:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:01:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:01:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 14:01:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 14:01:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:01:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2024-11-18 14:01:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2024-11-18 14:01:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:01:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:01:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:01:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:01:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:01:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:01:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:01:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:01:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:01:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:01:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:01:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:01:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:01:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:01:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:01:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:01:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:01:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:01:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:01:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:01:35,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:01:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:01:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:01:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:01:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:01:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:01:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:01:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:01:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:01:35,843 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:01:35,846 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:01:37,148 INFO L? ?]: Removed 441 outVars from TransFormulas that were not future-live. [2024-11-18 14:01:37,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:01:37,187 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:01:37,190 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:01:37,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:01:37 BoogieIcfgContainer [2024-11-18 14:01:37,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:01:37,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:01:37,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:01:37,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:01:37,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:01:34" (1/3) ... [2024-11-18 14:01:37,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd6c7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:01:37, skipping insertion in model container [2024-11-18 14:01:37,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:01:35" (2/3) ... [2024-11-18 14:01:37,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd6c7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:01:37, skipping insertion in model container [2024-11-18 14:01:37,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:01:37" (3/3) ... [2024-11-18 14:01:37,202 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product26.cil.c [2024-11-18 14:01:37,220 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:01:37,221 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:01:37,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:01:37,324 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;@1ba24e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:01:37,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:01:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-18 14:01:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:01:37,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:37,351 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:37,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:37,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1191959459, now seen corresponding path program 1 times [2024-11-18 14:01:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572135859] [2024-11-18 14:01:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572135859] [2024-11-18 14:01:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572135859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730117883] [2024-11-18 14:01:37,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:37,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:37,956 INFO L87 Difference]: Start difference. First operand has 550 states, 435 states have (on average 1.7080459770114942) internal successors, (743), 458 states have internal predecessors, (743), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:38,143 INFO L93 Difference]: Finished difference Result 1080 states and 1825 transitions. [2024-11-18 14:01:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-18 14:01:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:38,171 INFO L225 Difference]: With dead ends: 1080 [2024-11-18 14:01:38,171 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:38,186 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 14:01:38,192 INFO L432 NwaCegarLoop]: 904 mSDtfsCounter, 5 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2708 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 14:01:38,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2708 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7039627039627039) internal successors, (731), 450 states have internal predecessors, (731), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 908 transitions. [2024-11-18 14:01:38,317 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 908 transitions. Word has length 56 [2024-11-18 14:01:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:38,319 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 908 transitions. [2024-11-18 14:01:38,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 908 transitions. [2024-11-18 14:01:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:01:38,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:38,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:38,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:01:38,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:38,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash -234968581, now seen corresponding path program 1 times [2024-11-18 14:01:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344956698] [2024-11-18 14:01:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:38,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344956698] [2024-11-18 14:01:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344956698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:38,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:38,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005957690] [2024-11-18 14:01:38,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:38,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:38,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:38,590 INFO L87 Difference]: Start difference. First operand 542 states and 908 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:38,678 INFO L93 Difference]: Finished difference Result 1066 states and 1793 transitions. [2024-11-18 14:01:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:38,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-11-18 14:01:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:38,686 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 14:01:38,688 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:38,693 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 14:01:38,695 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 4 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2687 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 14:01:38,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2687 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 450 states have internal predecessors, (730), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 907 transitions. [2024-11-18 14:01:38,737 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 907 transitions. Word has length 59 [2024-11-18 14:01:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:38,739 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 907 transitions. [2024-11-18 14:01:38,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 907 transitions. [2024-11-18 14:01:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:01:38,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:38,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:38,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:01:38,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:38,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1694067341, now seen corresponding path program 1 times [2024-11-18 14:01:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697918645] [2024-11-18 14:01:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:38,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:38,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697918645] [2024-11-18 14:01:38,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697918645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715579819] [2024-11-18 14:01:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:38,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:38,959 INFO L87 Difference]: Start difference. First operand 542 states and 907 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,025 INFO L93 Difference]: Finished difference Result 1066 states and 1792 transitions. [2024-11-18 14:01:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2024-11-18 14:01:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,033 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 14:01:39,035 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:39,038 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 14:01:39,040 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 3 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2687 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 14:01:39,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2687 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 450 states have internal predecessors, (729), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 906 transitions. [2024-11-18 14:01:39,074 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 906 transitions. Word has length 60 [2024-11-18 14:01:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,075 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 906 transitions. [2024-11-18 14:01:39,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 906 transitions. [2024-11-18 14:01:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 14:01:39,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:39,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:01:39,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,078 INFO L85 PathProgramCache]: Analyzing trace with hash -119910537, now seen corresponding path program 1 times [2024-11-18 14:01:39,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94706980] [2024-11-18 14:01:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94706980] [2024-11-18 14:01:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94706980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:39,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652816251] [2024-11-18 14:01:39,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:39,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:39,228 INFO L87 Difference]: Start difference. First operand 542 states and 906 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,288 INFO L93 Difference]: Finished difference Result 1066 states and 1791 transitions. [2024-11-18 14:01:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-11-18 14:01:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,295 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 14:01:39,295 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:39,300 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 14:01:39,301 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 2 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2687 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 14:01:39,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2687 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.696969696969697) internal successors, (728), 450 states have internal predecessors, (728), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 905 transitions. [2024-11-18 14:01:39,336 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 905 transitions. Word has length 61 [2024-11-18 14:01:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,337 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 905 transitions. [2024-11-18 14:01:39,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 905 transitions. [2024-11-18 14:01:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 14:01:39,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:39,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:01:39,343 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 995888239, now seen corresponding path program 1 times [2024-11-18 14:01:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39609370] [2024-11-18 14:01:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:39,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:39,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39609370] [2024-11-18 14:01:39,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39609370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454614932] [2024-11-18 14:01:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:39,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:39,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:39,491 INFO L87 Difference]: Start difference. First operand 542 states and 905 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,535 INFO L93 Difference]: Finished difference Result 1066 states and 1790 transitions. [2024-11-18 14:01:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:39,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2024-11-18 14:01:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,540 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 14:01:39,541 INFO L226 Difference]: Without dead ends: 542 [2024-11-18 14:01:39,543 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 14:01:39,544 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 1 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2687 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 14:01:39,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2687 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-18 14:01:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-18 14:01:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6946386946386947) internal successors, (727), 450 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 904 transitions. [2024-11-18 14:01:39,565 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 904 transitions. Word has length 62 [2024-11-18 14:01:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,566 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 904 transitions. [2024-11-18 14:01:39,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 904 transitions. [2024-11-18 14:01:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 14:01:39,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:39,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:01:39,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 787490035, now seen corresponding path program 1 times [2024-11-18 14:01:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675733648] [2024-11-18 14:01:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:39,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675733648] [2024-11-18 14:01:39,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675733648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:39,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:39,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:39,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141710595] [2024-11-18 14:01:39,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:39,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:39,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:39,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:39,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:39,746 INFO L87 Difference]: Start difference. First operand 542 states and 904 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:01:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:39,849 INFO L93 Difference]: Finished difference Result 1032 states and 1722 transitions. [2024-11-18 14:01:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2024-11-18 14:01:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:39,857 INFO L225 Difference]: With dead ends: 1032 [2024-11-18 14:01:39,857 INFO L226 Difference]: Without dead ends: 557 [2024-11-18 14:01:39,860 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 14:01:39,862 INFO L432 NwaCegarLoop]: 894 mSDtfsCounter, 91 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5283 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:39,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5283 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-18 14:01:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2024-11-18 14:01:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 439 states have (on average 1.6902050113895217) internal successors, (742), 462 states have internal predecessors, (742), 92 states have call successors, (92), 22 states have call predecessors, (92), 23 states have return successors, (89), 84 states have call predecessors, (89), 87 states have call successors, (89) [2024-11-18 14:01:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 923 transitions. [2024-11-18 14:01:39,897 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 923 transitions. Word has length 63 [2024-11-18 14:01:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:39,897 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 923 transitions. [2024-11-18 14:01:39,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:01:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 923 transitions. [2024-11-18 14:01:39,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 14:01:39,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:39,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:39,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:01:39,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:39,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash -395857262, now seen corresponding path program 1 times [2024-11-18 14:01:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318544411] [2024-11-18 14:01:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318544411] [2024-11-18 14:01:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318544411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156727555] [2024-11-18 14:01:40,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:40,043 INFO L87 Difference]: Start difference. First operand 555 states and 923 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,096 INFO L93 Difference]: Finished difference Result 1084 states and 1816 transitions. [2024-11-18 14:01:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2024-11-18 14:01:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,103 INFO L225 Difference]: With dead ends: 1084 [2024-11-18 14:01:40,103 INFO L226 Difference]: Without dead ends: 536 [2024-11-18 14:01:40,107 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 14:01:40,109 INFO L432 NwaCegarLoop]: 898 mSDtfsCounter, 0 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2689 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 14:01:40,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2689 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-18 14:01:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2024-11-18 14:01:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 423 states have (on average 1.6855791962174942) internal successors, (713), 444 states have internal predecessors, (713), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 890 transitions. [2024-11-18 14:01:40,133 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 890 transitions. Word has length 63 [2024-11-18 14:01:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,134 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 890 transitions. [2024-11-18 14:01:40,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 890 transitions. [2024-11-18 14:01:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:01:40,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,139 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:40,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:01:40,139 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash 184275301, now seen corresponding path program 1 times [2024-11-18 14:01:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244270749] [2024-11-18 14:01:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:40,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244270749] [2024-11-18 14:01:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244270749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:40,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672614776] [2024-11-18 14:01:40,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:40,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:40,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:40,282 INFO L87 Difference]: Start difference. First operand 536 states and 890 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,498 INFO L93 Difference]: Finished difference Result 1029 states and 1714 transitions. [2024-11-18 14:01:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2024-11-18 14:01:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,506 INFO L225 Difference]: With dead ends: 1029 [2024-11-18 14:01:40,506 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 14:01:40,508 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 14:01:40,509 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 55 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4206 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 14:01:40,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4206 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:01:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 14:01:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 536. [2024-11-18 14:01:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 423 states have (on average 1.6761229314420805) internal successors, (709), 444 states have internal predecessors, (709), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 886 transitions. [2024-11-18 14:01:40,530 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 886 transitions. Word has length 64 [2024-11-18 14:01:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,530 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 886 transitions. [2024-11-18 14:01:40,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 886 transitions. [2024-11-18 14:01:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:01:40,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:40,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:01:40,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash -266022570, now seen corresponding path program 1 times [2024-11-18 14:01:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654983638] [2024-11-18 14:01:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:40,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654983638] [2024-11-18 14:01:40,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654983638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:40,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:40,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438197805] [2024-11-18 14:01:40,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:40,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:40,685 INFO L87 Difference]: Start difference. First operand 536 states and 886 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:40,868 INFO L93 Difference]: Finished difference Result 1029 states and 1710 transitions. [2024-11-18 14:01:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-11-18 14:01:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:40,873 INFO L225 Difference]: With dead ends: 1029 [2024-11-18 14:01:40,873 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 14:01:40,875 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 14:01:40,877 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 54 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4206 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 14:01:40,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4206 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 14:01:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 536. [2024-11-18 14:01:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 423 states have (on average 1.6666666666666667) internal successors, (705), 444 states have internal predecessors, (705), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 882 transitions. [2024-11-18 14:01:40,914 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 882 transitions. Word has length 65 [2024-11-18 14:01:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:40,914 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 882 transitions. [2024-11-18 14:01:40,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 882 transitions. [2024-11-18 14:01:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:01:40,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:40,921 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:40,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:01:40,921 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:40,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1658805302, now seen corresponding path program 1 times [2024-11-18 14:01:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279407023] [2024-11-18 14:01:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279407023] [2024-11-18 14:01:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279407023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821136652] [2024-11-18 14:01:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:41,066 INFO L87 Difference]: Start difference. First operand 536 states and 882 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,228 INFO L93 Difference]: Finished difference Result 1029 states and 1706 transitions. [2024-11-18 14:01:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2024-11-18 14:01:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,234 INFO L225 Difference]: With dead ends: 1029 [2024-11-18 14:01:41,235 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 14:01:41,237 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 14:01:41,238 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 53 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4188 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 14:01:41,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4188 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:01:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 14:01:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 536. [2024-11-18 14:01:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 423 states have (on average 1.657210401891253) internal successors, (701), 444 states have internal predecessors, (701), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 878 transitions. [2024-11-18 14:01:41,264 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 878 transitions. Word has length 66 [2024-11-18 14:01:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,268 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 878 transitions. [2024-11-18 14:01:41,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 878 transitions. [2024-11-18 14:01:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:01:41,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:41,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:01:41,272 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1915797430, now seen corresponding path program 1 times [2024-11-18 14:01:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892809263] [2024-11-18 14:01:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892809263] [2024-11-18 14:01:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892809263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:41,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049996885] [2024-11-18 14:01:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:41,461 INFO L87 Difference]: Start difference. First operand 536 states and 878 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:01:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,535 INFO L93 Difference]: Finished difference Result 1020 states and 1688 transitions. [2024-11-18 14:01:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:01:41,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2024-11-18 14:01:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,542 INFO L225 Difference]: With dead ends: 1020 [2024-11-18 14:01:41,542 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 14:01:41,545 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 14:01:41,546 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 84 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5129 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 14:01:41,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5129 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 14:01:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 14:01:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 402 states have (on average 1.6592039800995024) internal successors, (667), 423 states have internal predecessors, (667), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 844 transitions. [2024-11-18 14:01:41,565 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 844 transitions. Word has length 66 [2024-11-18 14:01:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,565 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 844 transitions. [2024-11-18 14:01:41,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:01:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 844 transitions. [2024-11-18 14:01:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:01:41,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:41,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:01:41,568 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2091119643, now seen corresponding path program 1 times [2024-11-18 14:01:41,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17153507] [2024-11-18 14:01:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17153507] [2024-11-18 14:01:41,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17153507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,703 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 [15439957] [2024-11-18 14:01:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:41,705 INFO L87 Difference]: Start difference. First operand 515 states and 844 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:41,790 INFO L93 Difference]: Finished difference Result 999 states and 1654 transitions. [2024-11-18 14:01:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2024-11-18 14:01:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:41,795 INFO L225 Difference]: With dead ends: 999 [2024-11-18 14:01:41,795 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 14:01:41,798 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 14:01:41,799 INFO L432 NwaCegarLoop]: 827 mSDtfsCounter, 17 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4126 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 14:01:41,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4126 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 14:01:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 14:01:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 402 states have (on average 1.6567164179104477) internal successors, (666), 423 states have internal predecessors, (666), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 843 transitions. [2024-11-18 14:01:41,818 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 843 transitions. Word has length 67 [2024-11-18 14:01:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:41,818 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 843 transitions. [2024-11-18 14:01:41,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 843 transitions. [2024-11-18 14:01:41,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:01:41,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:41,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:41,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:01:41,820 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:41,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2056225327, now seen corresponding path program 1 times [2024-11-18 14:01:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196861688] [2024-11-18 14:01:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:41,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:41,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:41,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196861688] [2024-11-18 14:01:41,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196861688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:41,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:41,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405518282] [2024-11-18 14:01:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:41,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:41,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:41,957 INFO L87 Difference]: Start difference. First operand 515 states and 843 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,030 INFO L93 Difference]: Finished difference Result 999 states and 1653 transitions. [2024-11-18 14:01:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2024-11-18 14:01:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,035 INFO L225 Difference]: With dead ends: 999 [2024-11-18 14:01:42,035 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 14:01:42,038 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 14:01:42,039 INFO L432 NwaCegarLoop]: 827 mSDtfsCounter, 16 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4126 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 14:01:42,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4126 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 14:01:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 14:01:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 402 states have (on average 1.654228855721393) internal successors, (665), 423 states have internal predecessors, (665), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 842 transitions. [2024-11-18 14:01:42,058 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 842 transitions. Word has length 68 [2024-11-18 14:01:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,059 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 842 transitions. [2024-11-18 14:01:42,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 842 transitions. [2024-11-18 14:01:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:01:42,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:42,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:01:42,061 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1189316254, now seen corresponding path program 1 times [2024-11-18 14:01:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206749747] [2024-11-18 14:01:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:42,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206749747] [2024-11-18 14:01:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206749747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997916388] [2024-11-18 14:01:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:42,150 INFO L87 Difference]: Start difference. First operand 515 states and 842 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,182 INFO L93 Difference]: Finished difference Result 999 states and 1652 transitions. [2024-11-18 14:01:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2024-11-18 14:01:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,188 INFO L225 Difference]: With dead ends: 999 [2024-11-18 14:01:42,188 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 14:01:42,191 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 14:01:42,191 INFO L432 NwaCegarLoop]: 835 mSDtfsCounter, 9 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2499 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 14:01:42,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 14:01:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 14:01:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 402 states have (on average 1.6517412935323383) internal successors, (664), 423 states have internal predecessors, (664), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 841 transitions. [2024-11-18 14:01:42,212 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 841 transitions. Word has length 69 [2024-11-18 14:01:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,213 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 841 transitions. [2024-11-18 14:01:42,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 841 transitions. [2024-11-18 14:01:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:01:42,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,215 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:42,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:01:42,215 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash 656050912, now seen corresponding path program 1 times [2024-11-18 14:01:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517792371] [2024-11-18 14:01:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:42,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517792371] [2024-11-18 14:01:42,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517792371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:01:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616747601] [2024-11-18 14:01:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:01:42,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:01:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:01:42,337 INFO L87 Difference]: Start difference. First operand 515 states and 841 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:42,383 INFO L93 Difference]: Finished difference Result 993 states and 1640 transitions. [2024-11-18 14:01:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:01:42,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2024-11-18 14:01:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:42,390 INFO L225 Difference]: With dead ends: 993 [2024-11-18 14:01:42,390 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 14:01:42,393 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 14:01:42,394 INFO L432 NwaCegarLoop]: 829 mSDtfsCounter, 4 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:42,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2478 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:01:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 14:01:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 14:01:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 402 states have (on average 1.6492537313432836) internal successors, (663), 423 states have internal predecessors, (663), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 14:01:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 840 transitions. [2024-11-18 14:01:42,419 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 840 transitions. Word has length 69 [2024-11-18 14:01:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:42,420 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 840 transitions. [2024-11-18 14:01:42,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 14:01:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 840 transitions. [2024-11-18 14:01:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:01:42,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:42,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:42,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:01:42,422 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:42,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash -234358428, now seen corresponding path program 1 times [2024-11-18 14:01:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:42,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263879961] [2024-11-18 14:01:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263879961] [2024-11-18 14:01:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263879961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:42,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:42,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:01:42,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306809402] [2024-11-18 14:01:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:42,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:01:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:01:42,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:01:42,680 INFO L87 Difference]: Start difference. First operand 515 states and 840 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-18 14:01:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:44,918 INFO L93 Difference]: Finished difference Result 1589 states and 2657 transitions. [2024-11-18 14:01:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:01:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 70 [2024-11-18 14:01:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:44,932 INFO L225 Difference]: With dead ends: 1589 [2024-11-18 14:01:44,932 INFO L226 Difference]: Without dead ends: 1119 [2024-11-18 14:01:44,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:01:44,937 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 2488 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2548 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:44,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2548 Valid, 1241 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 14:01:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-18 14:01:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 997. [2024-11-18 14:01:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 785 states have (on average 1.672611464968153) internal successors, (1313), 815 states have internal predecessors, (1313), 174 states have call successors, (174), 36 states have call predecessors, (174), 37 states have return successors, (176), 158 states have call predecessors, (176), 169 states have call successors, (176) [2024-11-18 14:01:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1663 transitions. [2024-11-18 14:01:45,007 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1663 transitions. Word has length 70 [2024-11-18 14:01:45,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:45,007 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1663 transitions. [2024-11-18 14:01:45,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-18 14:01:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1663 transitions. [2024-11-18 14:01:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 14:01:45,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:45,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:45,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:01:45,013 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:45,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1058684563, 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 [271603238] [2024-11-18 14:01:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271603238] [2024-11-18 14:01:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271603238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 14:01:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494812417] [2024-11-18 14:01:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:45,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:01:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:01:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:01:45,451 INFO L87 Difference]: Start difference. First operand 997 states and 1663 transitions. Second operand has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-18 14:01:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:52,839 INFO L93 Difference]: Finished difference Result 3602 states and 6042 transitions. [2024-11-18 14:01:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:01:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 98 [2024-11-18 14:01:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:52,866 INFO L225 Difference]: With dead ends: 3602 [2024-11-18 14:01:52,866 INFO L226 Difference]: Without dead ends: 2650 [2024-11-18 14:01:52,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:01:52,876 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 2195 mSDsluCounter, 6649 mSDsCounter, 0 mSdLazyCounter, 12049 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 7409 SdHoareTripleChecker+Invalid, 12635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 12049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:52,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 7409 Invalid, 12635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [586 Valid, 12049 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-18 14:01:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2024-11-18 14:01:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2554. [2024-11-18 14:01:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 1946 states have (on average 1.6428571428571428) internal successors, (3197), 2022 states have internal predecessors, (3197), 513 states have call successors, (513), 77 states have call predecessors, (513), 94 states have return successors, (546), 487 states have call predecessors, (546), 508 states have call successors, (546) [2024-11-18 14:01:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4256 transitions. [2024-11-18 14:01:53,095 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4256 transitions. Word has length 98 [2024-11-18 14:01:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:53,095 INFO L471 AbstractCegarLoop]: Abstraction has 2554 states and 4256 transitions. [2024-11-18 14:01:53,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 11 states have internal predecessors, (77), 7 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-18 14:01:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4256 transitions. [2024-11-18 14:01:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 14:01:53,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:53,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:53,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:01:53,100 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:53,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1907481295, now seen corresponding path program 1 times [2024-11-18 14:01:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904430932] [2024-11-18 14:01:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:53,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904430932] [2024-11-18 14:01:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904430932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:01:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932970447] [2024-11-18 14:01:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:53,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:01:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:01:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:01:53,425 INFO L87 Difference]: Start difference. First operand 2554 states and 4256 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:01:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:55,275 INFO L93 Difference]: Finished difference Result 5091 states and 8633 transitions. [2024-11-18 14:01:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:01:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-11-18 14:01:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:55,299 INFO L225 Difference]: With dead ends: 5091 [2024-11-18 14:01:55,299 INFO L226 Difference]: Without dead ends: 2582 [2024-11-18 14:01:55,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:01:55,318 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 1288 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:55,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 1627 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 14:01:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2024-11-18 14:01:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2578. [2024-11-18 14:01:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 1964 states have (on average 1.6369653767820773) internal successors, (3215), 2040 states have internal predecessors, (3215), 513 states have call successors, (513), 77 states have call predecessors, (513), 100 states have return successors, (612), 493 states have call predecessors, (612), 508 states have call successors, (612) [2024-11-18 14:01:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 4340 transitions. [2024-11-18 14:01:55,561 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 4340 transitions. Word has length 99 [2024-11-18 14:01:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:55,562 INFO L471 AbstractCegarLoop]: Abstraction has 2578 states and 4340 transitions. [2024-11-18 14:01:55,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:01:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 4340 transitions. [2024-11-18 14:01:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 14:01:55,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:55,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:55,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:01:55,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:55,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1495352814, now seen corresponding path program 1 times [2024-11-18 14:01:55,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:55,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067182878] [2024-11-18 14:01:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:55,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067182878] [2024-11-18 14:01:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067182878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:55,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677190748] [2024-11-18 14:01:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:55,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:55,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:55,803 INFO L87 Difference]: Start difference. First operand 2578 states and 4340 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:01:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:01:58,608 INFO L93 Difference]: Finished difference Result 8241 states and 14159 transitions. [2024-11-18 14:01:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:01:58,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 100 [2024-11-18 14:01:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:01:58,643 INFO L225 Difference]: With dead ends: 8241 [2024-11-18 14:01:58,643 INFO L226 Difference]: Without dead ends: 5708 [2024-11-18 14:01:58,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:01:58,661 INFO L432 NwaCegarLoop]: 619 mSDtfsCounter, 2702 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 4972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:01:58,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2771 Valid, 2563 Invalid, 4972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 14:01:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2024-11-18 14:01:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5477. [2024-11-18 14:01:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 4166 states have (on average 1.6272203552568412) internal successors, (6779), 4347 states have internal predecessors, (6779), 1088 states have call successors, (1088), 190 states have call predecessors, (1088), 222 states have return successors, (1237), 1016 states have call predecessors, (1237), 1083 states have call successors, (1237) [2024-11-18 14:01:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 9104 transitions. [2024-11-18 14:01:58,992 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 9104 transitions. Word has length 100 [2024-11-18 14:01:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:01:58,993 INFO L471 AbstractCegarLoop]: Abstraction has 5477 states and 9104 transitions. [2024-11-18 14:01:58,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:01:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 9104 transitions. [2024-11-18 14:01:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 14:01:58,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:01:58,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:58,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:01:58,997 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:01:58,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:01:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1782125928, now seen corresponding path program 1 times [2024-11-18 14:01:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:01:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159822651] [2024-11-18 14:01:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:01:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:01:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:01:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:01:59,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:01:59,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159822651] [2024-11-18 14:01:59,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159822651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:01:59,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:01:59,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:01:59,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820933627] [2024-11-18 14:01:59,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:01:59,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:01:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:01:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:01:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:01:59,217 INFO L87 Difference]: Start difference. First operand 5477 states and 9104 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:02:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:02,608 INFO L93 Difference]: Finished difference Result 16574 states and 28017 transitions. [2024-11-18 14:02:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:02:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 102 [2024-11-18 14:02:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:02,683 INFO L225 Difference]: With dead ends: 16574 [2024-11-18 14:02:02,683 INFO L226 Difference]: Without dead ends: 11853 [2024-11-18 14:02:02,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:02:02,713 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 2361 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 4069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:02,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 1760 Invalid, 4069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 3567 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 14:02:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2024-11-18 14:02:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 11213. [2024-11-18 14:02:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 8517 states have (on average 1.6283902782669955) internal successors, (13869), 8917 states have internal predecessors, (13869), 2182 states have call successors, (2182), 372 states have call predecessors, (2182), 513 states have return successors, (2752), 2066 states have call predecessors, (2752), 2177 states have call successors, (2752) [2024-11-18 14:02:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 18803 transitions. [2024-11-18 14:02:03,615 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 18803 transitions. Word has length 102 [2024-11-18 14:02:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:03,622 INFO L471 AbstractCegarLoop]: Abstraction has 11213 states and 18803 transitions. [2024-11-18 14:02:03,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-18 14:02:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 18803 transitions. [2024-11-18 14:02:03,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 14:02:03,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:03,634 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:03,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:02:03,635 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:03,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1068349879, now seen corresponding path program 1 times [2024-11-18 14:02:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:03,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835561617] [2024-11-18 14:02:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:03,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:02:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:03,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835561617] [2024-11-18 14:02:03,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835561617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:03,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:02:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542094882] [2024-11-18 14:02:03,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:03,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:02:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:02:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:03,866 INFO L87 Difference]: Start difference. First operand 11213 states and 18803 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:02:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:04,550 INFO L93 Difference]: Finished difference Result 21718 states and 36581 transitions. [2024-11-18 14:02:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2024-11-18 14:02:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:04,641 INFO L225 Difference]: With dead ends: 21718 [2024-11-18 14:02:04,641 INFO L226 Difference]: Without dead ends: 11371 [2024-11-18 14:02:04,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:04,838 INFO L432 NwaCegarLoop]: 838 mSDtfsCounter, 0 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:04,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3322 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:02:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2024-11-18 14:02:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11335. [2024-11-18 14:02:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11335 states, 8613 states have (on average 1.6206896551724137) internal successors, (13959), 9007 states have internal predecessors, (13959), 2176 states have call successors, (2176), 372 states have call predecessors, (2176), 545 states have return successors, (2840), 2098 states have call predecessors, (2840), 2171 states have call successors, (2840) [2024-11-18 14:02:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11335 states to 11335 states and 18975 transitions. [2024-11-18 14:02:05,847 INFO L78 Accepts]: Start accepts. Automaton has 11335 states and 18975 transitions. Word has length 107 [2024-11-18 14:02:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:05,847 INFO L471 AbstractCegarLoop]: Abstraction has 11335 states and 18975 transitions. [2024-11-18 14:02:05,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:02:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 11335 states and 18975 transitions. [2024-11-18 14:02:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:02:05,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:05,852 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:05,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:02:05,852 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:05,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2066356244, now seen corresponding path program 1 times [2024-11-18 14:02:05,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:05,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105358031] [2024-11-18 14:02:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:02:06,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:06,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105358031] [2024-11-18 14:02:06,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105358031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:06,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:06,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 14:02:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084491875] [2024-11-18 14:02:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:06,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:02:06,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:06,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:02:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:02:06,133 INFO L87 Difference]: Start difference. First operand 11335 states and 18975 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 14:02:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:07,634 INFO L93 Difference]: Finished difference Result 23782 states and 40691 transitions. [2024-11-18 14:02:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:02:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 114 [2024-11-18 14:02:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:07,862 INFO L225 Difference]: With dead ends: 23782 [2024-11-18 14:02:07,866 INFO L226 Difference]: Without dead ends: 11607 [2024-11-18 14:02:07,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:02:07,992 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 235 mSDsluCounter, 5886 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:07,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 6769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:02:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2024-11-18 14:02:08,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 11335. [2024-11-18 14:02:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11335 states, 8613 states have (on average 1.590502728433763) internal successors, (13699), 9007 states have internal predecessors, (13699), 2176 states have call successors, (2176), 372 states have call predecessors, (2176), 545 states have return successors, (2840), 2098 states have call predecessors, (2840), 2171 states have call successors, (2840) [2024-11-18 14:02:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11335 states to 11335 states and 18715 transitions. [2024-11-18 14:02:08,873 INFO L78 Accepts]: Start accepts. Automaton has 11335 states and 18715 transitions. Word has length 114 [2024-11-18 14:02:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:08,873 INFO L471 AbstractCegarLoop]: Abstraction has 11335 states and 18715 transitions. [2024-11-18 14:02:08,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 14:02:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 11335 states and 18715 transitions. [2024-11-18 14:02:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 14:02:08,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:08,877 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:08,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:02:08,877 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:08,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1684031932, now seen corresponding path program 1 times [2024-11-18 14:02:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:08,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382431217] [2024-11-18 14:02:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:08,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:02:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382431217] [2024-11-18 14:02:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382431217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:09,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:02:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282135091] [2024-11-18 14:02:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:09,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:02:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:02:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:09,218 INFO L87 Difference]: Start difference. First operand 11335 states and 18715 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:02:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:12,233 INFO L93 Difference]: Finished difference Result 23279 states and 38634 transitions. [2024-11-18 14:02:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:02:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2024-11-18 14:02:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:12,335 INFO L225 Difference]: With dead ends: 23279 [2024-11-18 14:02:12,336 INFO L226 Difference]: Without dead ends: 12821 [2024-11-18 14:02:12,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:02:12,386 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 2087 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 3071 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:12,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 1698 Invalid, 3555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3071 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 14:02:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12821 states. [2024-11-18 14:02:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12821 to 11901. [2024-11-18 14:02:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11901 states, 9035 states have (on average 1.577310459324848) internal successors, (14251), 9465 states have internal predecessors, (14251), 2231 states have call successors, (2231), 425 states have call predecessors, (2231), 634 states have return successors, (3043), 2154 states have call predecessors, (3043), 2226 states have call successors, (3043) [2024-11-18 14:02:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11901 states to 11901 states and 19525 transitions. [2024-11-18 14:02:13,276 INFO L78 Accepts]: Start accepts. Automaton has 11901 states and 19525 transitions. Word has length 119 [2024-11-18 14:02:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:13,276 INFO L471 AbstractCegarLoop]: Abstraction has 11901 states and 19525 transitions. [2024-11-18 14:02:13,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:02:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11901 states and 19525 transitions. [2024-11-18 14:02:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 14:02:13,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:13,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:13,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:02:13,281 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:13,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1241307169, now seen corresponding path program 1 times [2024-11-18 14:02:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:13,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245721125] [2024-11-18 14:02:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:13,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:02:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245721125] [2024-11-18 14:02:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245721125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 14:02:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463992850] [2024-11-18 14:02:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:13,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:02:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:02:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:02:13,855 INFO L87 Difference]: Start difference. First operand 11901 states and 19525 transitions. Second operand has 13 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 14:02:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:18,448 INFO L93 Difference]: Finished difference Result 27521 states and 45034 transitions. [2024-11-18 14:02:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:02:18,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 126 [2024-11-18 14:02:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:18,584 INFO L225 Difference]: With dead ends: 27521 [2024-11-18 14:02:18,584 INFO L226 Difference]: Without dead ends: 16352 [2024-11-18 14:02:18,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:02:18,659 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 2232 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 8103 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 8585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 8103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:18,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 4249 Invalid, 8585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 8103 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 14:02:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16352 states. [2024-11-18 14:02:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16352 to 14817. [2024-11-18 14:02:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14817 states, 11339 states have (on average 1.556839227445101) internal successors, (17653), 11883 states have internal predecessors, (17653), 2597 states have call successors, (2597), 599 states have call predecessors, (2597), 880 states have return successors, (3571), 2478 states have call predecessors, (3571), 2592 states have call successors, (3571) [2024-11-18 14:02:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 23821 transitions. [2024-11-18 14:02:19,868 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 23821 transitions. Word has length 126 [2024-11-18 14:02:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:19,870 INFO L471 AbstractCegarLoop]: Abstraction has 14817 states and 23821 transitions. [2024-11-18 14:02:19,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 14:02:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 23821 transitions. [2024-11-18 14:02:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:02:19,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:19,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:19,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 14:02:19,877 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:19,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1766235047, now seen corresponding path program 1 times [2024-11-18 14:02:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:19,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671536802] [2024-11-18 14:02:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:02:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671536802] [2024-11-18 14:02:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671536802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:02:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824766710] [2024-11-18 14:02:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:20,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:02:20,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:02:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:02:20,080 INFO L87 Difference]: Start difference. First operand 14817 states and 23821 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:02:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:21,212 INFO L93 Difference]: Finished difference Result 14970 states and 24087 transitions. [2024-11-18 14:02:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-18 14:02:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:21,330 INFO L225 Difference]: With dead ends: 14970 [2024-11-18 14:02:21,330 INFO L226 Difference]: Without dead ends: 14955 [2024-11-18 14:02:21,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:02:21,348 INFO L432 NwaCegarLoop]: 820 mSDtfsCounter, 902 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:21,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2939 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:02:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14955 states. [2024-11-18 14:02:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14955 to 14829. [2024-11-18 14:02:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14829 states, 11351 states have (on average 1.5562505506122808) internal successors, (17665), 11895 states have internal predecessors, (17665), 2597 states have call successors, (2597), 599 states have call predecessors, (2597), 880 states have return successors, (3571), 2478 states have call predecessors, (3571), 2592 states have call successors, (3571) [2024-11-18 14:02:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14829 states to 14829 states and 23833 transitions. [2024-11-18 14:02:22,787 INFO L78 Accepts]: Start accepts. Automaton has 14829 states and 23833 transitions. Word has length 124 [2024-11-18 14:02:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:22,788 INFO L471 AbstractCegarLoop]: Abstraction has 14829 states and 23833 transitions. [2024-11-18 14:02:22,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 14:02:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14829 states and 23833 transitions. [2024-11-18 14:02:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:02:22,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:22,793 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:22,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 14:02:22,793 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:22,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1587785972, now seen corresponding path program 1 times [2024-11-18 14:02:22,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75542461] [2024-11-18 14:02:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:02:23,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:23,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75542461] [2024-11-18 14:02:23,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75542461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:23,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:23,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 14:02:23,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472160170] [2024-11-18 14:02:23,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:23,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:02:23,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:02:23,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:02:23,084 INFO L87 Difference]: Start difference. First operand 14829 states and 23833 transitions. Second operand has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:24,221 INFO L93 Difference]: Finished difference Result 15195 states and 24390 transitions. [2024-11-18 14:02:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:02:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2024-11-18 14:02:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:24,352 INFO L225 Difference]: With dead ends: 15195 [2024-11-18 14:02:24,353 INFO L226 Difference]: Without dead ends: 15180 [2024-11-18 14:02:24,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:02:24,372 INFO L432 NwaCegarLoop]: 821 mSDtfsCounter, 823 mSDsluCounter, 6492 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 7313 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:24,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 7313 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:02:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15180 states. [2024-11-18 14:02:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15180 to 15142. [2024-11-18 14:02:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15142 states, 11593 states have (on average 1.552833606486673) internal successors, (18002), 12137 states have internal predecessors, (18002), 2642 states have call successors, (2642), 625 states have call predecessors, (2642), 906 states have return successors, (3656), 2522 states have call predecessors, (3656), 2637 states have call successors, (3656) [2024-11-18 14:02:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15142 states to 15142 states and 24300 transitions. [2024-11-18 14:02:25,449 INFO L78 Accepts]: Start accepts. Automaton has 15142 states and 24300 transitions. Word has length 130 [2024-11-18 14:02:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:25,450 INFO L471 AbstractCegarLoop]: Abstraction has 15142 states and 24300 transitions. [2024-11-18 14:02:25,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:02:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15142 states and 24300 transitions. [2024-11-18 14:02:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:02:25,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:25,455 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:02:25,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 14:02:25,456 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:25,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -852359905, now seen corresponding path program 1 times [2024-11-18 14:02:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106260961] [2024-11-18 14:02:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:02:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106260961] [2024-11-18 14:02:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106260961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:02:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352991941] [2024-11-18 14:02:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:26,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:02:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:02:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:02:26,019 INFO L87 Difference]: Start difference. First operand 15142 states and 24300 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:28,758 INFO L93 Difference]: Finished difference Result 30345 states and 48972 transitions. [2024-11-18 14:02:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:02:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2024-11-18 14:02:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:28,920 INFO L225 Difference]: With dead ends: 30345 [2024-11-18 14:02:28,920 INFO L226 Difference]: Without dead ends: 15264 [2024-11-18 14:02:28,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:02:28,992 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1232 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:28,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1623 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 14:02:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15264 states. [2024-11-18 14:02:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15264 to 15142. [2024-11-18 14:02:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15142 states, 11593 states have (on average 1.5511946864487192) internal successors, (17983), 12137 states have internal predecessors, (17983), 2642 states have call successors, (2642), 625 states have call predecessors, (2642), 906 states have return successors, (3656), 2522 states have call predecessors, (3656), 2637 states have call successors, (3656) [2024-11-18 14:02:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15142 states to 15142 states and 24281 transitions. [2024-11-18 14:02:30,288 INFO L78 Accepts]: Start accepts. Automaton has 15142 states and 24281 transitions. Word has length 143 [2024-11-18 14:02:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:30,289 INFO L471 AbstractCegarLoop]: Abstraction has 15142 states and 24281 transitions. [2024-11-18 14:02:30,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 15142 states and 24281 transitions. [2024-11-18 14:02:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:02:30,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:30,293 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:02:30,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 14:02:30,293 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:30,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 232773711, now seen corresponding path program 1 times [2024-11-18 14:02:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28732277] [2024-11-18 14:02:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:02:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28732277] [2024-11-18 14:02:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28732277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:02:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633156200] [2024-11-18 14:02:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:30,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:02:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:02:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:30,502 INFO L87 Difference]: Start difference. First operand 15142 states and 24281 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:34,336 INFO L93 Difference]: Finished difference Result 44491 states and 72763 transitions. [2024-11-18 14:02:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:02:34,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 144 [2024-11-18 14:02:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:34,650 INFO L225 Difference]: With dead ends: 44491 [2024-11-18 14:02:34,651 INFO L226 Difference]: Without dead ends: 29374 [2024-11-18 14:02:34,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:02:34,759 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 2168 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:34,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 1430 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 14:02:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29374 states. [2024-11-18 14:02:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29374 to 27781. [2024-11-18 14:02:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27781 states, 20782 states have (on average 1.544846501780387) internal successors, (32105), 21927 states have internal predecessors, (32105), 5416 states have call successors, (5416), 1049 states have call predecessors, (5416), 1582 states have return successors, (7774), 5298 states have call predecessors, (7774), 5411 states have call successors, (7774) [2024-11-18 14:02:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27781 states to 27781 states and 45295 transitions. [2024-11-18 14:02:36,898 INFO L78 Accepts]: Start accepts. Automaton has 27781 states and 45295 transitions. Word has length 144 [2024-11-18 14:02:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:02:36,899 INFO L471 AbstractCegarLoop]: Abstraction has 27781 states and 45295 transitions. [2024-11-18 14:02:36,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:02:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27781 states and 45295 transitions. [2024-11-18 14:02:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:02:36,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:02:36,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-18 14:02:36,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 14:02:36,905 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:02:36,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:02:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1376505797, now seen corresponding path program 1 times [2024-11-18 14:02:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:02:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972216341] [2024-11-18 14:02:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:02:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:02:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:02:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:02:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:02:37,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972216341] [2024-11-18 14:02:37,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972216341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:02:37,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:02:37,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:02:37,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271505105] [2024-11-18 14:02:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:02:37,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:02:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:02:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:02:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:02:37,096 INFO L87 Difference]: Start difference. First operand 27781 states and 45295 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:02:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:02:41,886 INFO L93 Difference]: Finished difference Result 82236 states and 138499 transitions. [2024-11-18 14:02:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:02:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2024-11-18 14:02:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:02:42,340 INFO L225 Difference]: With dead ends: 82236 [2024-11-18 14:02:42,340 INFO L226 Difference]: Without dead ends: 54500 [2024-11-18 14:02:42,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:02:42,486 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1841 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:02:42,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 946 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 14:02:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54500 states.