./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.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 f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 20:53:12,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 20:53:12,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 20:53:12,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 20:53:12,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 20:53:13,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 20:53:13,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 20:53:13,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 20:53:13,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 20:53:13,013 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 20:53:13,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 20:53:13,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 20:53:13,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 20:53:13,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 20:53:13,015 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 20:53:13,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 20:53:13,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 20:53:13,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 20:53:13,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 20:53:13,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 20:53:13,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 20:53:13,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 20:53:13,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 20:53:13,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 20:53:13,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 20:53:13,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 20:53:13,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 20:53:13,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 20:53:13,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 20:53:13,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 20:53:13,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 20:53:13,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:13,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 20:53:13,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 20:53:13,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 20:53:13,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 20:53:13,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 20:53:13,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 20:53:13,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 20:53:13,021 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 20:53:13,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 20:53:13,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 20:53:13,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 20:53:13,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 20:53:13,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 20:53:13,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 20:53:13,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 20:53:13,256 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 20:53:13,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-11-22 20:53:14,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 20:53:14,743 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 20:53:14,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2023-11-22 20:53:14,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266c184a2/c7d4a4e3e05342d998dd30eed3c719eb/FLAGc020ef610 [2023-11-22 20:53:14,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266c184a2/c7d4a4e3e05342d998dd30eed3c719eb [2023-11-22 20:53:14,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 20:53:14,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 20:53:14,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:14,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 20:53:14,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 20:53:14,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:14" (1/1) ... [2023-11-22 20:53:14,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484d7fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:14, skipping insertion in model container [2023-11-22 20:53:14,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:14" (1/1) ... [2023-11-22 20:53:14,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 20:53:14,963 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2023-11-22 20:53:15,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:15,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 20:53:15,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-22 20:53:15,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2023-11-22 20:53:15,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2023-11-22 20:53:15,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2023-11-22 20:53:15,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2023-11-22 20:53:15,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2023-11-22 20:53:15,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2023-11-22 20:53:15,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2023-11-22 20:53:15,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2023-11-22 20:53:15,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2023-11-22 20:53:15,232 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2023-11-22 20:53:15,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:15,310 INFO L206 MainTranslator]: Completed translation [2023-11-22 20:53:15,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15 WrapperNode [2023-11-22 20:53:15,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:15,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:15,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 20:53:15,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 20:53:15,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,384 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 838 [2023-11-22 20:53:15,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:15,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 20:53:15,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 20:53:15,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 20:53:15,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 20:53:15,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 20:53:15,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 20:53:15,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 20:53:15,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (1/1) ... [2023-11-22 20:53:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:15,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 20:53:15,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 20:53:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-22 20:53:15,634 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-22 20:53:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 20:53:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-22 20:53:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-22 20:53:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-22 20:53:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-22 20:53:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-22 20:53:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-22 20:53:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-22 20:53:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-22 20:53:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-22 20:53:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-22 20:53:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-22 20:53:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-22 20:53:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-22 20:53:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-22 20:53:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-22 20:53:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-22 20:53:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-22 20:53:15,638 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-22 20:53:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-22 20:53:15,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-22 20:53:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-22 20:53:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-22 20:53:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-22 20:53:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-22 20:53:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-22 20:53:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-22 20:53:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-22 20:53:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-22 20:53:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-22 20:53:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-22 20:53:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-22 20:53:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-22 20:53:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-22 20:53:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-22 20:53:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-22 20:53:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-22 20:53:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 20:53:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-22 20:53:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-22 20:53:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-22 20:53:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-22 20:53:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-22 20:53:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-22 20:53:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-22 20:53:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-22 20:53:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-22 20:53:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-22 20:53:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 20:53:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-22 20:53:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 20:53:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 20:53:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-22 20:53:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-22 20:53:15,781 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 20:53:15,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 20:53:16,617 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 20:53:16,705 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 20:53:16,705 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 20:53:16,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:16 BoogieIcfgContainer [2023-11-22 20:53:16,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 20:53:16,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 20:53:16,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 20:53:16,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 20:53:16,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:53:14" (1/3) ... [2023-11-22 20:53:16,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588414ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:16, skipping insertion in model container [2023-11-22 20:53:16,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:15" (2/3) ... [2023-11-22 20:53:16,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588414ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:16, skipping insertion in model container [2023-11-22 20:53:16,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:16" (3/3) ... [2023-11-22 20:53:16,714 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2023-11-22 20:53:16,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 20:53:16,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 20:53:16,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 20:53:16,798 INFO L357 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, mHoare=true, 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;@20b73e1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 20:53:16,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 20:53:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-22 20:53:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 20:53:16,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:16,831 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:16,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash 45902878, now seen corresponding path program 1 times [2023-11-22 20:53:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338944311] [2023-11-22 20:53:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:16,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 20:53:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 20:53:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:53:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 20:53:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 20:53:17,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338944311] [2023-11-22 20:53:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338944311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227289775] [2023-11-22 20:53:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:17,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:17,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:17,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 20:53:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 20:53:18,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:53:18,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227289775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:18,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:18,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-11-22 20:53:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056628985] [2023-11-22 20:53:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:18,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 20:53:18,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 20:53:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:53:18,173 INFO L87 Difference]: Start difference. First operand has 577 states, 447 states have (on average 1.7248322147651007) internal successors, (771), 467 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:18,263 INFO L93 Difference]: Finished difference Result 1138 states and 1939 transitions. [2023-11-22 20:53:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 20:53:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-22 20:53:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:18,281 INFO L225 Difference]: With dead ends: 1138 [2023-11-22 20:53:18,281 INFO L226 Difference]: Without dead ends: 571 [2023-11-22 20:53:18,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 20:53:18,289 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:18,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 947 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-22 20:53:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2023-11-22 20:53:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.7004504504504505) internal successors, (755), 462 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 20:53:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 956 transitions. [2023-11-22 20:53:18,345 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 956 transitions. Word has length 84 [2023-11-22 20:53:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:18,346 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 956 transitions. [2023-11-22 20:53:18,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 956 transitions. [2023-11-22 20:53:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 20:53:18,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:18,350 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:18,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 20:53:18,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:18,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1452086658, now seen corresponding path program 1 times [2023-11-22 20:53:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:18,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928533311] [2023-11-22 20:53:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 20:53:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 20:53:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:53:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:53:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 20:53:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 20:53:19,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:19,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928533311] [2023-11-22 20:53:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928533311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462723731] [2023-11-22 20:53:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:19,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:19,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:19,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:19,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 20:53:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:19,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 20:53:19,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:19,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462723731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:19,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:19,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 20:53:19,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593685277] [2023-11-22 20:53:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:19,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:19,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:19,328 INFO L87 Difference]: Start difference. First operand 571 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:19,432 INFO L93 Difference]: Finished difference Result 1148 states and 1925 transitions. [2023-11-22 20:53:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:19,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-22 20:53:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:19,437 INFO L225 Difference]: With dead ends: 1148 [2023-11-22 20:53:19,437 INFO L226 Difference]: Without dead ends: 580 [2023-11-22 20:53:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:19,441 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 26 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2769 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-22 20:53:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-11-22 20:53:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.7013274336283186) internal successors, (769), 470 states have internal predecessors, (769), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 20:53:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 970 transitions. [2023-11-22 20:53:19,463 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 970 transitions. Word has length 84 [2023-11-22 20:53:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:19,464 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 970 transitions. [2023-11-22 20:53:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 970 transitions. [2023-11-22 20:53:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-22 20:53:19,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:19,466 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:19,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:19,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 20:53:19,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:19,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1293983062, now seen corresponding path program 1 times [2023-11-22 20:53:19,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:19,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249058693] [2023-11-22 20:53:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 20:53:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 20:53:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 20:53:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 20:53:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 20:53:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249058693] [2023-11-22 20:53:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249058693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654687472] [2023-11-22 20:53:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:20,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:20,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:20,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 20:53:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:20,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:20,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:20,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:20,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654687472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-22 20:53:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320237634] [2023-11-22 20:53:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:20,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:20,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:20,567 INFO L87 Difference]: Start difference. First operand 580 states and 970 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:20,732 INFO L93 Difference]: Finished difference Result 1199 states and 2019 transitions. [2023-11-22 20:53:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:20,735 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-22 20:53:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:20,739 INFO L225 Difference]: With dead ends: 1199 [2023-11-22 20:53:20,739 INFO L226 Difference]: Without dead ends: 624 [2023-11-22 20:53:20,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:20,741 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 168 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:20,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2615 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2023-11-22 20:53:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2023-11-22 20:53:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 495 states have (on average 1.7212121212121212) internal successors, (852), 513 states have internal predecessors, (852), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 20:53:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1053 transitions. [2023-11-22 20:53:20,757 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1053 transitions. Word has length 86 [2023-11-22 20:53:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:20,757 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1053 transitions. [2023-11-22 20:53:20,757 INFO L496 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1053 transitions. [2023-11-22 20:53:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-22 20:53:20,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:20,759 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:20,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:20,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:20,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:20,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:20,973 INFO L85 PathProgramCache]: Analyzing trace with hash 210519474, now seen corresponding path program 1 times [2023-11-22 20:53:20,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:20,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552646947] [2023-11-22 20:53:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:20,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:53:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 20:53:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:53:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 20:53:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 20:53:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 20:53:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 20:53:21,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:21,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552646947] [2023-11-22 20:53:21,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552646947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:21,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218280759] [2023-11-22 20:53:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:21,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:21,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:21,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 20:53:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:21,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:21,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:21,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218280759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:21,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 20:53:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730201724] [2023-11-22 20:53:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-22 20:53:21,778 INFO L87 Difference]: Start difference. First operand 624 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:21,896 INFO L93 Difference]: Finished difference Result 1266 states and 2136 transitions. [2023-11-22 20:53:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-11-22 20:53:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:21,899 INFO L225 Difference]: With dead ends: 1266 [2023-11-22 20:53:21,899 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 20:53:21,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:21,901 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5463 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:21,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5463 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 20:53:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 636. [2023-11-22 20:53:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-11-22 20:53:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-11-22 20:53:21,916 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 88 [2023-11-22 20:53:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:21,916 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-11-22 20:53:21,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-11-22 20:53:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 20:53:21,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:21,918 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:21,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 20:53:22,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:22,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:22,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1885228893, now seen corresponding path program 1 times [2023-11-22 20:53:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:22,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786935891] [2023-11-22 20:53:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 20:53:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 20:53:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 20:53:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 20:53:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:53:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 20:53:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 20:53:22,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786935891] [2023-11-22 20:53:22,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786935891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708809480] [2023-11-22 20:53:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:22,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:22,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:22,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 20:53:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:22,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:22,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:22,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708809480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-22 20:53:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682164234] [2023-11-22 20:53:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:22,899 INFO L87 Difference]: Start difference. First operand 636 states and 1073 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:23,015 INFO L93 Difference]: Finished difference Result 1284 states and 2165 transitions. [2023-11-22 20:53:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:23,015 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-11-22 20:53:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:23,018 INFO L225 Difference]: With dead ends: 1284 [2023-11-22 20:53:23,019 INFO L226 Difference]: Without dead ends: 655 [2023-11-22 20:53:23,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:23,022 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:23,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5451 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-22 20:53:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2023-11-22 20:53:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 504 states have (on average 1.7182539682539681) internal successors, (866), 524 states have internal predecessors, (866), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2023-11-22 20:53:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1073 transitions. [2023-11-22 20:53:23,067 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1073 transitions. Word has length 89 [2023-11-22 20:53:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:23,067 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1073 transitions. [2023-11-22 20:53:23,067 INFO L496 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1073 transitions. [2023-11-22 20:53:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-22 20:53:23,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:23,069 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:23,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:23,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:23,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:23,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash -300952191, now seen corresponding path program 1 times [2023-11-22 20:53:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907682915] [2023-11-22 20:53:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:53:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 20:53:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 20:53:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 20:53:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 20:53:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:53:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 20:53:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 20:53:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907682915] [2023-11-22 20:53:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907682915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244426456] [2023-11-22 20:53:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:23,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:23,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:23,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:23,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 20:53:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:24,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-22 20:53:24,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:24,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244426456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:24,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 20:53:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853670344] [2023-11-22 20:53:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:24,213 INFO L87 Difference]: Start difference. First operand 636 states and 1073 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:24,287 INFO L93 Difference]: Finished difference Result 1280 states and 2157 transitions. [2023-11-22 20:53:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:24,288 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2023-11-22 20:53:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:24,291 INFO L225 Difference]: With dead ends: 1280 [2023-11-22 20:53:24,291 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 20:53:24,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:24,294 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 20 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:24,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2770 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 20:53:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2023-11-22 20:53:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 20:53:24,308 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 89 [2023-11-22 20:53:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:24,309 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 20:53:24,309 INFO L496 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 20:53:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 20:53:24,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:24,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:24,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:24,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1535905988, now seen corresponding path program 1 times [2023-11-22 20:53:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399591323] [2023-11-22 20:53:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:53:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:53:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 20:53:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 20:53:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:24,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399591323] [2023-11-22 20:53:24,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399591323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624948122] [2023-11-22 20:53:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:24,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:24,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:24,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 20:53:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:25,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:25,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624948122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:25,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:25,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-22 20:53:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257513884] [2023-11-22 20:53:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:25,083 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:25,228 INFO L93 Difference]: Finished difference Result 1293 states and 2168 transitions. [2023-11-22 20:53:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:25,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-22 20:53:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:25,231 INFO L225 Difference]: With dead ends: 1293 [2023-11-22 20:53:25,231 INFO L226 Difference]: Without dead ends: 666 [2023-11-22 20:53:25,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:25,234 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 135 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:25,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5439 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-22 20:53:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2023-11-22 20:53:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 20:53:25,247 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-11-22 20:53:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:25,248 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 20:53:25,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 20:53:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 20:53:25,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:25,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:25,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:25,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:25,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:25,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1950057538, now seen corresponding path program 1 times [2023-11-22 20:53:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771733705] [2023-11-22 20:53:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:53:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:53:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 20:53:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 20:53:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:25,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771733705] [2023-11-22 20:53:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771733705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345390254] [2023-11-22 20:53:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:25,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:25,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 20:53:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:25,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:25,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:25,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345390254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 20:53:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52363380] [2023-11-22 20:53:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:25,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:25,965 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:26,153 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-11-22 20:53:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:26,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-22 20:53:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:26,157 INFO L225 Difference]: With dead ends: 1295 [2023-11-22 20:53:26,157 INFO L226 Difference]: Without dead ends: 668 [2023-11-22 20:53:26,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:26,160 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 131 mSDsluCounter, 5409 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:26,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6326 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-22 20:53:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-11-22 20:53:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 20:53:26,198 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 78 [2023-11-22 20:53:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:26,198 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 20:53:26,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:26,198 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 20:53:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-22 20:53:26,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:26,200 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:26,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 20:53:26,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:26,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 378866343, now seen corresponding path program 1 times [2023-11-22 20:53:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:26,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456852130] [2023-11-22 20:53:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 20:53:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 20:53:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 20:53:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 20:53:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 20:53:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 20:53:26,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:26,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456852130] [2023-11-22 20:53:26,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456852130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166462744] [2023-11-22 20:53:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:26,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:26,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:26,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 20:53:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:27,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:27,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:27,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166462744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:27,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:27,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-22 20:53:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185326463] [2023-11-22 20:53:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:27,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:27,266 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:27,493 INFO L93 Difference]: Finished difference Result 1295 states and 2171 transitions. [2023-11-22 20:53:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-22 20:53:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:27,497 INFO L225 Difference]: With dead ends: 1295 [2023-11-22 20:53:27,497 INFO L226 Difference]: Without dead ends: 668 [2023-11-22 20:53:27,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:27,500 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 141 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:27,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6314 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-22 20:53:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 645. [2023-11-22 20:53:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 20:53:27,515 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 91 [2023-11-22 20:53:27,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 20:53:27,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 20:53:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-22 20:53:27,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:27,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:27,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:27,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:27,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:27,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash -653020125, now seen corresponding path program 1 times [2023-11-22 20:53:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158221339] [2023-11-22 20:53:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 20:53:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 20:53:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 20:53:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:53:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158221339] [2023-11-22 20:53:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158221339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090672769] [2023-11-22 20:53:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:27,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:27,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:27,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:28,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 20:53:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:28,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:28,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090672769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:28,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:28,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 20:53:28,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143332088] [2023-11-22 20:53:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:28,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:28,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:28,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:53:28,264 INFO L87 Difference]: Start difference. First operand 645 states and 1081 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:28,471 INFO L93 Difference]: Finished difference Result 1287 states and 2157 transitions. [2023-11-22 20:53:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:28,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2023-11-22 20:53:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:28,476 INFO L225 Difference]: With dead ends: 1287 [2023-11-22 20:53:28,476 INFO L226 Difference]: Without dead ends: 660 [2023-11-22 20:53:28,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:28,479 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 151 mSDsluCounter, 5385 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:28,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6302 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-22 20:53:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 645. [2023-11-22 20:53:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.708984375) internal successors, (875), 532 states have internal predecessors, (875), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1081 transitions. [2023-11-22 20:53:28,499 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1081 transitions. Word has length 80 [2023-11-22 20:53:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:28,499 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1081 transitions. [2023-11-22 20:53:28,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1081 transitions. [2023-11-22 20:53:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 20:53:28,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:28,501 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:28,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:28,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 20:53:28,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:28,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1177552581, now seen corresponding path program 1 times [2023-11-22 20:53:28,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:28,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409425004] [2023-11-22 20:53:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:28,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 20:53:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:53:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:53:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 20:53:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 20:53:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:53:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:29,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409425004] [2023-11-22 20:53:29,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409425004] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:29,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888448784] [2023-11-22 20:53:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:29,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:29,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:29,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:29,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 20:53:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:29,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 20:53:29,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:29,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888448784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:29,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 20:53:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339701237] [2023-11-22 20:53:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:29,497 INFO L87 Difference]: Start difference. First operand 645 states and 1081 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:29,574 INFO L93 Difference]: Finished difference Result 1261 states and 2119 transitions. [2023-11-22 20:53:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:29,575 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2023-11-22 20:53:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:29,578 INFO L225 Difference]: With dead ends: 1261 [2023-11-22 20:53:29,578 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 20:53:29,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:29,581 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 35 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:29,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2768 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 20:53:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2023-11-22 20:53:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.69921875) internal successors, (870), 532 states have internal predecessors, (870), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2023-11-22 20:53:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1076 transitions. [2023-11-22 20:53:29,594 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1076 transitions. Word has length 92 [2023-11-22 20:53:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:29,594 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1076 transitions. [2023-11-22 20:53:29,594 INFO L496 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 20:53:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1076 transitions. [2023-11-22 20:53:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-22 20:53:29,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:29,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:29,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 20:53:29,809 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:29,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1965468872, now seen corresponding path program 1 times [2023-11-22 20:53:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111647285] [2023-11-22 20:53:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:53:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 20:53:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-22 20:53:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 20:53:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:30,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111647285] [2023-11-22 20:53:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111647285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560437215] [2023-11-22 20:53:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:30,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:30,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:30,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:30,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 20:53:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:30,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:30,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:30,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560437215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:30,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:30,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-22 20:53:30,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696952629] [2023-11-22 20:53:30,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:30,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:30,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:30,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:30,394 INFO L87 Difference]: Start difference. First operand 645 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 20:53:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:30,588 INFO L93 Difference]: Finished difference Result 1257 states and 2110 transitions. [2023-11-22 20:53:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:30,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-11-22 20:53:30,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:30,593 INFO L225 Difference]: With dead ends: 1257 [2023-11-22 20:53:30,593 INFO L226 Difference]: Without dead ends: 697 [2023-11-22 20:53:30,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:30,595 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 239 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:30,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2604 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-22 20:53:30,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2023-11-22 20:53:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 555 states have (on average 1.7171171171171171) internal successors, (953), 575 states have internal predecessors, (953), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2023-11-22 20:53:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1158 transitions. [2023-11-22 20:53:30,611 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1158 transitions. Word has length 81 [2023-11-22 20:53:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:30,612 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1158 transitions. [2023-11-22 20:53:30,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 20:53:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1158 transitions. [2023-11-22 20:53:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 20:53:30,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:30,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:30,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:30,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 20:53:30,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:30,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1005732585, now seen corresponding path program 1 times [2023-11-22 20:53:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:30,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928363636] [2023-11-22 20:53:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:30,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 20:53:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 20:53:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 20:53:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 20:53:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928363636] [2023-11-22 20:53:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928363636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776407342] [2023-11-22 20:53:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:31,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:31,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:31,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:31,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 20:53:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:31,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 20:53:31,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776407342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:31,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:31,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-22 20:53:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452206299] [2023-11-22 20:53:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:31,373 INFO L87 Difference]: Start difference. First operand 689 states and 1158 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:31,496 INFO L93 Difference]: Finished difference Result 1281 states and 2144 transitions. [2023-11-22 20:53:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:31,496 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2023-11-22 20:53:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:31,500 INFO L225 Difference]: With dead ends: 1281 [2023-11-22 20:53:31,500 INFO L226 Difference]: Without dead ends: 721 [2023-11-22 20:53:31,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:53:31,502 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 113 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:31,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5464 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-22 20:53:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 701. [2023-11-22 20:53:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 20:53:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 20:53:31,515 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 82 [2023-11-22 20:53:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 20:53:31,516 INFO L496 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 20:53:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 20:53:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 20:53:31,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:31,517 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:31,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 20:53:31,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:31,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 712217724, now seen corresponding path program 1 times [2023-11-22 20:53:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662124250] [2023-11-22 20:53:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:53:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 20:53:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 20:53:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 20:53:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662124250] [2023-11-22 20:53:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662124250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210816368] [2023-11-22 20:53:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:32,239 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:32,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 20:53:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:53:32,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 20:53:32,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210816368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:32,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-22 20:53:32,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311590073] [2023-11-22 20:53:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:32,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-22 20:53:32,580 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:32,716 INFO L93 Difference]: Finished difference Result 1289 states and 2157 transitions. [2023-11-22 20:53:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-22 20:53:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:32,720 INFO L225 Difference]: With dead ends: 1289 [2023-11-22 20:53:32,721 INFO L226 Difference]: Without dead ends: 729 [2023-11-22 20:53:32,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:32,724 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 124 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:32,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5452 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-22 20:53:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 701. [2023-11-22 20:53:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 20:53:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 20:53:32,746 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-11-22 20:53:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:32,746 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 20:53:32,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 20:53:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 20:53:32,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:32,749 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:32,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:32,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:32,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 440502268, now seen corresponding path program 1 times [2023-11-22 20:53:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806557240] [2023-11-22 20:53:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:53:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 20:53:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 20:53:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 20:53:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 20:53:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:33,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:33,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806557240] [2023-11-22 20:53:33,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806557240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:33,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119149832] [2023-11-22 20:53:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:33,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:33,425 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:33,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 20:53:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:33,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:33,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 20:53:33,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119149832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:33,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:33,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 20:53:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573528984] [2023-11-22 20:53:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:33,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:33,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:33,741 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:33,927 INFO L93 Difference]: Finished difference Result 1291 states and 2159 transitions. [2023-11-22 20:53:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:33,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-22 20:53:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:33,930 INFO L225 Difference]: With dead ends: 1291 [2023-11-22 20:53:33,930 INFO L226 Difference]: Without dead ends: 731 [2023-11-22 20:53:33,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:53:33,933 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 132 mSDsluCounter, 5410 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:33,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6327 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-22 20:53:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 701. [2023-11-22 20:53:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7145390070921986) internal successors, (967), 586 states have internal predecessors, (967), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 20:53:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1176 transitions. [2023-11-22 20:53:33,947 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1176 transitions. Word has length 95 [2023-11-22 20:53:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:33,947 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1176 transitions. [2023-11-22 20:53:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1176 transitions. [2023-11-22 20:53:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-22 20:53:33,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:33,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:33,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 20:53:34,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:34,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 462298868, now seen corresponding path program 1 times [2023-11-22 20:53:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:34,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303518317] [2023-11-22 20:53:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:53:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:53:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 20:53:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 20:53:34,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:34,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303518317] [2023-11-22 20:53:34,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303518317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:34,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481664387] [2023-11-22 20:53:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:34,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:34,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:34,357 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 20:53:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:34,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 20:53:34,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481664387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:34,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:34,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 20:53:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205793213] [2023-11-22 20:53:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:34,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:34,591 INFO L87 Difference]: Start difference. First operand 701 states and 1176 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 20:53:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:34,648 INFO L93 Difference]: Finished difference Result 1333 states and 2238 transitions. [2023-11-22 20:53:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:53:34,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-11-22 20:53:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:34,652 INFO L225 Difference]: With dead ends: 1333 [2023-11-22 20:53:34,652 INFO L226 Difference]: Without dead ends: 701 [2023-11-22 20:53:34,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:53:34,654 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 10 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:34,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2770 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-11-22 20:53:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2023-11-22 20:53:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 20:53:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-11-22 20:53:34,669 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 83 [2023-11-22 20:53:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:34,669 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-11-22 20:53:34,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 20:53:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-11-22 20:53:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-22 20:53:34,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:34,671 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:34,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 20:53:34,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:34,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1042106081, now seen corresponding path program 1 times [2023-11-22 20:53:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399119233] [2023-11-22 20:53:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 20:53:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 20:53:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 20:53:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 20:53:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:53:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:35,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399119233] [2023-11-22 20:53:35,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399119233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636664082] [2023-11-22 20:53:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:35,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:35,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:35,315 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:35,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 20:53:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:35,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:53:35,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 20:53:35,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:35,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636664082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:35,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:35,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-22 20:53:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117365787] [2023-11-22 20:53:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:53:35,627 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:35,792 INFO L93 Difference]: Finished difference Result 1283 states and 2143 transitions. [2023-11-22 20:53:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:53:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2023-11-22 20:53:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:35,796 INFO L225 Difference]: With dead ends: 1283 [2023-11-22 20:53:35,797 INFO L226 Difference]: Without dead ends: 723 [2023-11-22 20:53:35,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:53:35,799 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 142 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6297 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6297 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-22 20:53:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 701. [2023-11-22 20:53:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 564 states have (on average 1.7092198581560283) internal successors, (964), 586 states have internal predecessors, (964), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2023-11-22 20:53:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1173 transitions. [2023-11-22 20:53:35,813 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1173 transitions. Word has length 96 [2023-11-22 20:53:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:35,814 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1173 transitions. [2023-11-22 20:53:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 20:53:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1173 transitions. [2023-11-22 20:53:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-22 20:53:35,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:35,816 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:35,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-22 20:53:36,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 20:53:36,028 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:36,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:36,029 INFO L85 PathProgramCache]: Analyzing trace with hash 407035319, now seen corresponding path program 1 times [2023-11-22 20:53:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:36,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51105399] [2023-11-22 20:53:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 20:53:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 20:53:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 20:53:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 20:53:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:36,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51105399] [2023-11-22 20:53:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51105399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673766228] [2023-11-22 20:53:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:36,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:36,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:36,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:36,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 20:53:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 20:53:36,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 20:53:36,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673766228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:36,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-11-22 20:53:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369902791] [2023-11-22 20:53:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:36,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 20:53:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 20:53:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:53:36,893 INFO L87 Difference]: Start difference. First operand 701 states and 1173 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-22 20:53:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:39,566 INFO L93 Difference]: Finished difference Result 2438 states and 4115 transitions. [2023-11-22 20:53:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2023-11-22 20:53:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:39,577 INFO L225 Difference]: With dead ends: 2438 [2023-11-22 20:53:39,577 INFO L226 Difference]: Without dead ends: 1882 [2023-11-22 20:53:39,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-22 20:53:39,580 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3087 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:39,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 1253 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-22 20:53:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-11-22 20:53:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1715. [2023-11-22 20:53:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1376 states have (on average 1.7005813953488371) internal successors, (2340), 1414 states have internal predecessors, (2340), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2023-11-22 20:53:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2899 transitions. [2023-11-22 20:53:39,641 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2899 transitions. Word has length 97 [2023-11-22 20:53:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:39,641 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2899 transitions. [2023-11-22 20:53:39,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-22 20:53:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2899 transitions. [2023-11-22 20:53:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-22 20:53:39,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:39,645 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:39,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:39,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 20:53:39,858 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:39,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1665695133, now seen corresponding path program 1 times [2023-11-22 20:53:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151633584] [2023-11-22 20:53:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:53:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:53:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 20:53:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 20:53:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-22 20:53:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 20:53:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 20:53:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 20:53:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151633584] [2023-11-22 20:53:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151633584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591827854] [2023-11-22 20:53:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:40,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:40,961 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:41,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 20:53:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:53:41,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 20:53:41,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:41,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591827854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:41,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:41,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 22 [2023-11-22 20:53:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247112159] [2023-11-22 20:53:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-22 20:53:41,344 INFO L87 Difference]: Start difference. First operand 1715 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 20:53:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:41,445 INFO L93 Difference]: Finished difference Result 4838 states and 8274 transitions. [2023-11-22 20:53:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2023-11-22 20:53:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:41,463 INFO L225 Difference]: With dead ends: 4838 [2023-11-22 20:53:41,463 INFO L226 Difference]: Without dead ends: 3269 [2023-11-22 20:53:41,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-22 20:53:41,472 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 952 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1855 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2023-11-22 20:53:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3250. [2023-11-22 20:53:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2605 states have (on average 1.6998080614203455) internal successors, (4428), 2672 states have internal predecessors, (4428), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2023-11-22 20:53:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5534 transitions. [2023-11-22 20:53:41,564 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5534 transitions. Word has length 169 [2023-11-22 20:53:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:41,565 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 5534 transitions. [2023-11-22 20:53:41,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 20:53:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5534 transitions. [2023-11-22 20:53:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 20:53:41,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:41,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:41,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:41,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:41,782 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:41,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:41,782 INFO L85 PathProgramCache]: Analyzing trace with hash -870610860, now seen corresponding path program 1 times [2023-11-22 20:53:41,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:41,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885058992] [2023-11-22 20:53:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:41,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 20:53:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 20:53:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 20:53:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 20:53:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 20:53:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:53:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 20:53:42,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885058992] [2023-11-22 20:53:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885058992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67077932] [2023-11-22 20:53:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:42,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:42,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:42,288 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:42,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 20:53:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:42,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 20:53:42,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 20:53:42,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67077932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 12 [2023-11-22 20:53:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528990986] [2023-11-22 20:53:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:42,549 INFO L87 Difference]: Start difference. First operand 3250 states and 5534 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 20:53:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:42,666 INFO L93 Difference]: Finished difference Result 6482 states and 11053 transitions. [2023-11-22 20:53:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:42,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-11-22 20:53:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:42,684 INFO L225 Difference]: With dead ends: 6482 [2023-11-22 20:53:42,684 INFO L226 Difference]: Without dead ends: 3216 [2023-11-22 20:53:42,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:42,698 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 13 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:42,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2769 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 20:53:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-11-22 20:53:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3216. [2023-11-22 20:53:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 2574 states have (on average 1.693861693861694) internal successors, (4360), 2639 states have internal predecessors, (4360), 514 states have call successors, (514), 123 states have call predecessors, (514), 127 states have return successors, (588), 483 states have call predecessors, (588), 508 states have call successors, (588) [2023-11-22 20:53:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5462 transitions. [2023-11-22 20:53:42,797 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5462 transitions. Word has length 122 [2023-11-22 20:53:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:42,798 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 5462 transitions. [2023-11-22 20:53:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 20:53:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5462 transitions. [2023-11-22 20:53:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-22 20:53:42,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:42,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:42,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:43,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:43,015 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:43,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1121950045, now seen corresponding path program 1 times [2023-11-22 20:53:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279869915] [2023-11-22 20:53:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:43,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:53:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 20:53:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 20:53:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-22 20:53:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:53:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279869915] [2023-11-22 20:53:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279869915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246879412] [2023-11-22 20:53:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:43,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:43,551 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:43,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 20:53:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 20:53:43,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:53:43,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:43,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246879412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:43,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:43,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-11-22 20:53:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200202184] [2023-11-22 20:53:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:53:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:53:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:43,856 INFO L87 Difference]: Start difference. First operand 3216 states and 5462 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 20:53:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:44,030 INFO L93 Difference]: Finished difference Result 8189 states and 13940 transitions. [2023-11-22 20:53:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:53:44,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-11-22 20:53:44,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:44,066 INFO L225 Difference]: With dead ends: 8189 [2023-11-22 20:53:44,066 INFO L226 Difference]: Without dead ends: 5084 [2023-11-22 20:53:44,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:44,083 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 967 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:44,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 3114 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2023-11-22 20:53:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5076. [2023-11-22 20:53:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 4058 states have (on average 1.6688023656973878) internal successors, (6772), 4123 states have internal predecessors, (6772), 806 states have call successors, (806), 195 states have call predecessors, (806), 211 states have return successors, (1002), 785 states have call predecessors, (1002), 796 states have call successors, (1002) [2023-11-22 20:53:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 8580 transitions. [2023-11-22 20:53:44,302 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 8580 transitions. Word has length 122 [2023-11-22 20:53:44,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:44,302 INFO L495 AbstractCegarLoop]: Abstraction has 5076 states and 8580 transitions. [2023-11-22 20:53:44,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 20:53:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 8580 transitions. [2023-11-22 20:53:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-22 20:53:44,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:44,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:44,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:44,518 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -515569723, now seen corresponding path program 1 times [2023-11-22 20:53:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761933389] [2023-11-22 20:53:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:53:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:53:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:53:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 20:53:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-22 20:53:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 20:53:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 20:53:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761933389] [2023-11-22 20:53:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761933389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:53:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040402224] [2023-11-22 20:53:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:44,976 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:53:45,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 20:53:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:45,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 20:53:45,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:53:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-22 20:53:45,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:53:45,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040402224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:45,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:53:45,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2023-11-22 20:53:45,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025471708] [2023-11-22 20:53:45,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:45,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:53:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:53:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:45,255 INFO L87 Difference]: Start difference. First operand 5076 states and 8580 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:53:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:45,523 INFO L93 Difference]: Finished difference Result 10206 states and 17246 transitions. [2023-11-22 20:53:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:53:45,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-11-22 20:53:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:45,553 INFO L225 Difference]: With dead ends: 10206 [2023-11-22 20:53:45,553 INFO L226 Difference]: Without dead ends: 5143 [2023-11-22 20:53:45,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:53:45,570 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 134 mSDsluCounter, 4516 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5450 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:45,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5450 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 20:53:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2023-11-22 20:53:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5069. [2023-11-22 20:53:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4051 states have (on average 1.667736361392249) internal successors, (6756), 4116 states have internal predecessors, (6756), 806 states have call successors, (806), 195 states have call predecessors, (806), 211 states have return successors, (1002), 785 states have call predecessors, (1002), 796 states have call successors, (1002) [2023-11-22 20:53:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8564 transitions. [2023-11-22 20:53:45,707 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8564 transitions. Word has length 123 [2023-11-22 20:53:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:45,707 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 8564 transitions. [2023-11-22 20:53:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:53:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8564 transitions. [2023-11-22 20:53:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-22 20:53:45,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:45,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:45,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 20:53:45,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:53:45,926 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:45,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -791626762, now seen corresponding path program 1 times [2023-11-22 20:53:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47801109] [2023-11-22 20:53:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:53:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:53:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 20:53:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 20:53:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 20:53:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 20:53:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47801109] [2023-11-22 20:53:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47801109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:46,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 20:53:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171801025] [2023-11-22 20:53:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 20:53:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 20:53:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:53:46,484 INFO L87 Difference]: Start difference. First operand 5069 states and 8564 transitions. Second operand has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:53:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:52,641 INFO L93 Difference]: Finished difference Result 12153 states and 20727 transitions. [2023-11-22 20:53:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 20:53:52,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2023-11-22 20:53:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:52,690 INFO L225 Difference]: With dead ends: 12153 [2023-11-22 20:53:52,691 INFO L226 Difference]: Without dead ends: 7180 [2023-11-22 20:53:52,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-22 20:53:52,705 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 2131 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 5551 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 6106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 5551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:52,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 2625 Invalid, 6106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [555 Valid, 5551 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-22 20:53:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2023-11-22 20:53:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 5257. [2023-11-22 20:53:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 4193 states have (on average 1.6620558072978775) internal successors, (6969), 4258 states have internal predecessors, (6969), 842 states have call successors, (842), 195 states have call predecessors, (842), 221 states have return successors, (1062), 825 states have call predecessors, (1062), 832 states have call successors, (1062) [2023-11-22 20:53:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8873 transitions. [2023-11-22 20:53:53,396 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8873 transitions. Word has length 124 [2023-11-22 20:53:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:53,397 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 8873 transitions. [2023-11-22 20:53:53,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:53:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8873 transitions. [2023-11-22 20:53:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-22 20:53:53,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:53,402 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 20:53:53,403 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:53,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:53,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1661596319, now seen corresponding path program 1 times [2023-11-22 20:53:53,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:53,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876835084] [2023-11-22 20:53:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:53:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 20:53:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 20:53:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:53:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:53:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 20:53:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:53:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:53:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:53:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:53:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-22 20:53:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-22 20:53:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 20:53:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-22 20:53:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:54,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876835084] [2023-11-22 20:53:54,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876835084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:54,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:54,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:53:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496996677] [2023-11-22 20:53:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:54,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:53:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:53:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:53:54,135 INFO L87 Difference]: Start difference. First operand 5257 states and 8873 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 20:53:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:59,455 INFO L93 Difference]: Finished difference Result 12310 states and 20968 transitions. [2023-11-22 20:53:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 20:53:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2023-11-22 20:53:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:59,481 INFO L225 Difference]: With dead ends: 12310 [2023-11-22 20:53:59,481 INFO L226 Difference]: Without dead ends: 7058 [2023-11-22 20:53:59,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:53:59,495 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 2060 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 3130 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 3130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:59,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 1445 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 3130 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-22 20:53:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2023-11-22 20:54:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 5230. [2023-11-22 20:54:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 4169 states have (on average 1.6608299352362677) internal successors, (6924), 4232 states have internal predecessors, (6924), 841 states have call successors, (841), 195 states have call predecessors, (841), 219 states have return successors, (1059), 824 states have call predecessors, (1059), 831 states have call successors, (1059) [2023-11-22 20:54:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 8824 transitions. [2023-11-22 20:54:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 8824 transitions. Word has length 173 [2023-11-22 20:54:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:00,213 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 8824 transitions. [2023-11-22 20:54:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 20:54:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 8824 transitions. [2023-11-22 20:54:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-22 20:54:00,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:00,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:54:00,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 20:54:00,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1077071505, now seen corresponding path program 1 times [2023-11-22 20:54:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298316395] [2023-11-22 20:54:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:54:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:54:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:54:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:54:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:54:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 20:54:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 20:54:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 20:54:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-22 20:54:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:54:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298316395] [2023-11-22 20:54:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298316395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:00,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:00,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 20:54:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030604732] [2023-11-22 20:54:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:00,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 20:54:00,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 20:54:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:54:00,766 INFO L87 Difference]: Start difference. First operand 5230 states and 8824 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:54:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:12,819 INFO L93 Difference]: Finished difference Result 16430 states and 29854 transitions. [2023-11-22 20:54:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 20:54:12,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2023-11-22 20:54:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:12,866 INFO L225 Difference]: With dead ends: 16430 [2023-11-22 20:54:12,866 INFO L226 Difference]: Without dead ends: 11281 [2023-11-22 20:54:12,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2023-11-22 20:54:12,889 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 4800 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 8005 mSolverCounterSat, 1342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 9347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1342 IncrementalHoareTripleChecker+Valid, 8005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:12,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4883 Valid, 3615 Invalid, 9347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1342 Valid, 8005 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-22 20:54:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2023-11-22 20:54:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 8493. [2023-11-22 20:54:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8493 states, 6745 states have (on average 1.6400296515937731) internal successors, (11062), 6853 states have internal predecessors, (11062), 1356 states have call successors, (1356), 314 states have call predecessors, (1356), 391 states have return successors, (2154), 1369 states have call predecessors, (2154), 1342 states have call successors, (2154) [2023-11-22 20:54:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8493 states to 8493 states and 14572 transitions. [2023-11-22 20:54:14,030 INFO L78 Accepts]: Start accepts. Automaton has 8493 states and 14572 transitions. Word has length 125 [2023-11-22 20:54:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:14,031 INFO L495 AbstractCegarLoop]: Abstraction has 8493 states and 14572 transitions. [2023-11-22 20:54:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:54:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8493 states and 14572 transitions. [2023-11-22 20:54:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-22 20:54:14,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:14,097 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:54:14,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 20:54:14,098 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:14,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash -927523670, now seen corresponding path program 1 times [2023-11-22 20:54:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95749750] [2023-11-22 20:54:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:54:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 20:54:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 20:54:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:54:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:54:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 20:54:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 20:54:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 20:54:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:54:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:54:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:54:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 20:54:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 20:54:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 20:54:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 20:54:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-22 20:54:14,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:14,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95749750] [2023-11-22 20:54:14,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95749750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:54:14,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207205298] [2023-11-22 20:54:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:14,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:54:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:54:14,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 20:54:14,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 20:54:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:15,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:54:15,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:54:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-22 20:54:15,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:54:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-22 20:54:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207205298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:54:15,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:54:15,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2023-11-22 20:54:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818851502] [2023-11-22 20:54:15,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:54:15,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 20:54:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 20:54:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-22 20:54:15,676 INFO L87 Difference]: Start difference. First operand 8493 states and 14572 transitions. Second operand has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 12 states have internal predecessors, (142), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) [2023-11-22 20:55:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:02,309 INFO L93 Difference]: Finished difference Result 44235 states and 84216 transitions. [2023-11-22 20:55:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-11-22 20:55:02,310 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 12 states have internal predecessors, (142), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) Word has length 178 [2023-11-22 20:55:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:02,497 INFO L225 Difference]: With dead ends: 44235 [2023-11-22 20:55:02,498 INFO L226 Difference]: Without dead ends: 35825 [2023-11-22 20:55:02,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 446 SyntacticMatches, 5 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7247 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=2305, Invalid=15785, Unknown=0, NotChecked=0, Total=18090 [2023-11-22 20:55:02,569 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 16768 mSDsluCounter, 7727 mSDsCounter, 0 mSdLazyCounter, 25809 mSolverCounterSat, 5658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16854 SdHoareTripleChecker+Valid, 8631 SdHoareTripleChecker+Invalid, 31467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5658 IncrementalHoareTripleChecker+Valid, 25809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:02,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16854 Valid, 8631 Invalid, 31467 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5658 Valid, 25809 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2023-11-22 20:55:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35825 states. [2023-11-22 20:55:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35825 to 21926. [2023-11-22 20:55:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21926 states, 17245 states have (on average 1.5990721948390838) internal successors, (27576), 17531 states have internal predecessors, (27576), 3597 states have call successors, (3597), 869 states have call predecessors, (3597), 1083 states have return successors, (6538), 3657 states have call predecessors, (6538), 3567 states have call successors, (6538) [2023-11-22 20:55:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21926 states to 21926 states and 37711 transitions. [2023-11-22 20:55:06,626 INFO L78 Accepts]: Start accepts. Automaton has 21926 states and 37711 transitions. Word has length 178 [2023-11-22 20:55:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:06,627 INFO L495 AbstractCegarLoop]: Abstraction has 21926 states and 37711 transitions. [2023-11-22 20:55:06,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.888888888888889) internal successors, (142), 12 states have internal predecessors, (142), 7 states have call successors, (40), 9 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 7 states have call successors, (38) [2023-11-22 20:55:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21926 states and 37711 transitions. [2023-11-22 20:55:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-22 20:55:06,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:06,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:55:06,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 20:55:06,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:06,844 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:06,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash -495835103, now seen corresponding path program 1 times [2023-11-22 20:55:06,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:06,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767942430] [2023-11-22 20:55:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:55:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:55:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:55:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:55:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:55:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 20:55:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 20:55:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 20:55:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 20:55:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:55:07,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:07,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767942430] [2023-11-22 20:55:07,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767942430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:07,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:55:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700400648] [2023-11-22 20:55:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:55:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:55:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:55:07,328 INFO L87 Difference]: Start difference. First operand 21926 states and 37711 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:55:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:25,954 INFO L93 Difference]: Finished difference Result 73083 states and 146082 transitions. [2023-11-22 20:55:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 20:55:25,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2023-11-22 20:55:25,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:26,381 INFO L225 Difference]: With dead ends: 73083 [2023-11-22 20:55:26,381 INFO L226 Difference]: Without dead ends: 51238 [2023-11-22 20:55:26,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-22 20:55:26,564 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 2684 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 4426 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 4426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2774 Valid, 2222 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 4426 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-22 20:55:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51238 states. [2023-11-22 20:55:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51238 to 38682. [2023-11-22 20:55:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38682 states, 30422 states have (on average 1.5884228518835053) internal successors, (48323), 30939 states have internal predecessors, (48323), 6330 states have call successors, (6330), 1545 states have call predecessors, (6330), 1929 states have return successors, (14653), 6461 states have call predecessors, (14653), 6282 states have call successors, (14653) [2023-11-22 20:55:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38682 states to 38682 states and 69306 transitions. [2023-11-22 20:55:34,056 INFO L78 Accepts]: Start accepts. Automaton has 38682 states and 69306 transitions. Word has length 127 [2023-11-22 20:55:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:34,056 INFO L495 AbstractCegarLoop]: Abstraction has 38682 states and 69306 transitions. [2023-11-22 20:55:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:55:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 38682 states and 69306 transitions. [2023-11-22 20:55:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 20:55:34,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:34,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:55:34,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 20:55:34,061 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:34,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1454563832, now seen corresponding path program 1 times [2023-11-22 20:55:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:34,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920334364] [2023-11-22 20:55:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:55:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:55:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:55:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:55:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 20:55:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 20:55:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 20:55:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 20:55:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:55:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920334364] [2023-11-22 20:55:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920334364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 20:55:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719724965] [2023-11-22 20:55:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 20:55:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 20:55:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:55:34,586 INFO L87 Difference]: Start difference. First operand 38682 states and 69306 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:55:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:55,767 INFO L93 Difference]: Finished difference Result 87325 states and 166069 transitions. [2023-11-22 20:55:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-22 20:55:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2023-11-22 20:55:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:56,106 INFO L225 Difference]: With dead ends: 87325 [2023-11-22 20:55:56,107 INFO L226 Difference]: Without dead ends: 51514 [2023-11-22 20:55:56,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-11-22 20:55:56,309 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2693 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 7747 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 8490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 7747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:56,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 3581 Invalid, 8490 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [743 Valid, 7747 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-22 20:55:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51514 states. [2023-11-22 20:56:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51514 to 38658. [2023-11-22 20:56:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38658 states, 30413 states have (on average 1.5883010554697004) internal successors, (48305), 30906 states have internal predecessors, (48305), 6324 states have call successors, (6324), 1545 states have call predecessors, (6324), 1920 states have return successors, (14578), 6470 states have call predecessors, (14578), 6276 states have call successors, (14578) [2023-11-22 20:56:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38658 states to 38658 states and 69207 transitions. [2023-11-22 20:56:03,511 INFO L78 Accepts]: Start accepts. Automaton has 38658 states and 69207 transitions. Word has length 130 [2023-11-22 20:56:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:03,512 INFO L495 AbstractCegarLoop]: Abstraction has 38658 states and 69207 transitions. [2023-11-22 20:56:03,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-22 20:56:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38658 states and 69207 transitions. [2023-11-22 20:56:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-22 20:56:03,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:03,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:56:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 20:56:03,516 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -856130975, now seen corresponding path program 1 times [2023-11-22 20:56:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:03,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146104046] [2023-11-22 20:56:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:56:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:56:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:56:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:56:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 20:56:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 20:56:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:56:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:56:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:56:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:56:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:56:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:56:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 20:56:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 20:56:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 20:56:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-22 20:56:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:56:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146104046] [2023-11-22 20:56:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146104046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:56:03,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:56:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:56:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728710052] [2023-11-22 20:56:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:56:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:56:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:56:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:56:03,986 INFO L87 Difference]: Start difference. First operand 38658 states and 69207 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)