./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.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/ntdrivers/cdaudio.i.cil-1.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 ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:34:51,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:34:51,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:34:51,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:34:51,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:34:51,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:34:51,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:34:51,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:34:51,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:34:51,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:34:51,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:34:51,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:34:51,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:34:51,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:34:51,557 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:34:51,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:34:51,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:34:51,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:34:51,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:34:51,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:34:51,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:34:51,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:34:51,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:34:51,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:34:51,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:34:51,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:34:51,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:34:51,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:34:51,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:34:51,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:34:51,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:34:51,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:34:51,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:34:51,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:34:51,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:34:51,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:34:51,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:34:51,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:34:51,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:34:51,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:34:51,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:34:51,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:34:51,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:34:51,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:34:51,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:34:51,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:34:51,818 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:34:51,818 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:34:51,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2023-11-22 23:34:52,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:34:53,228 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:34:53,229 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c [2023-11-22 23:34:53,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315a987de/d59b3570f85a4c31ace7bb13521f773b/FLAG00c2ab602 [2023-11-22 23:34:53,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315a987de/d59b3570f85a4c31ace7bb13521f773b [2023-11-22 23:34:53,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:34:53,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:34:53,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:34:53,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:34:53,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:34:53,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:34:53" (1/1) ... [2023-11-22 23:34:53,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276d48c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:53, skipping insertion in model container [2023-11-22 23:34:53,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:34:53" (1/1) ... [2023-11-22 23:34:53,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:34:53,886 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2023-11-22 23:34:54,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:34:54,398 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:34:54,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [13] [2023-11-22 23:34:54,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [14] [2023-11-22 23:34:54,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [187] [2023-11-22 23:34:54,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [193] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [399] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [452] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [471] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [472] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [1153] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1326] [2023-11-22 23:34:54,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [1446] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [1447] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(1) [2284] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack() [2285] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,8) [2626] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [2627] [2023-11-22 23:34:54,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [2630] [2023-11-22 23:34:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [2631] [2023-11-22 23:34:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [2632] [2023-11-22 23:34:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [2633] [2023-11-22 23:34:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,1) [2634] [2023-11-22 23:34:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [2635] [2023-11-22 23:34:54,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(push,4) [2642] [2023-11-22 23:34:54,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma pack(pop) [2643] [2023-11-22 23:34:54,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2644] [2023-11-22 23:34:54,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2645] [2023-11-22 23:34:54,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2646] [2023-11-22 23:34:54,413 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2651] [2023-11-22 23:34:54,413 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2652] [2023-11-22 23:34:54,413 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2681] [2023-11-22 23:34:54,413 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2682] [2023-11-22 23:34:54,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2683] [2023-11-22 23:34:54,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [2690] [2023-11-22 23:34:54,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [2691] [2023-11-22 23:34:54,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [2692] [2023-11-22 23:34:54,414 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [2693] [2023-11-22 23:34:54,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [2694] [2023-11-22 23:34:54,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [2695] [2023-11-22 23:34:54,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2696] [2023-11-22 23:34:54,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2697] [2023-11-22 23:34:54,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2698] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2699] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2753] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [2754] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [2827] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [2828] [2023-11-22 23:34:54,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [2840] [2023-11-22 23:34:54,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [2841] [2023-11-22 23:34:54,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(INIT,DriverEntry) [2910] [2023-11-22 23:34:54,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDNC,CdAudioNECDeviceControl) [2911] [2023-11-22 23:34:54,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioHitachiSendPauseCommand) [2912] [2023-11-22 23:34:54,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioHitachiDeviceControl) [2913] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioDenonDeviceControl) [2914] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDNC,CdAudio435DeviceControl) [2915] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDNC,CdAudio535DeviceControl) [2916] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioPioneerDeviceControl) [2917] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDNC,CdAudioPan533DeviceControl) [2918] [2023-11-22 23:34:54,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioAtapiDeviceControl) [2919] [2023-11-22 23:34:54,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioLionOpticsDeviceControl) [2920] [2023-11-22 23:34:54,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,CdAudioHPCdrDeviceControl) [2921] [2023-11-22 23:34:54,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,HpCdrProcessLastSession) [2922] [2023-11-22 23:34:54,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma alloc_text(PAGECDOT,HPCdrCompletion) [2923] [2023-11-22 23:34:54,420 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [7517] [2023-11-22 23:34:54,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [7518] [2023-11-22 23:34:54,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [7519] [2023-11-22 23:34:54,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7520] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7521] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [7522] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [7523] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [7524] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4035) [7525] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(push) [7526] [2023-11-22 23:34:54,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4164) [7527] [2023-11-22 23:34:54,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_enable) [7528] [2023-11-22 23:34:54,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma function(_disable) [7529] [2023-11-22 23:34:54,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(pop) [7530] [2023-11-22 23:34:54,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7531] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7532] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7533] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7534] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7535] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4103) [7536] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(disable:4200) [7537] [2023-11-22 23:34:54,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma warning(default:4200) [7538] [2023-11-22 23:34:54,487 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2023-11-22 23:34:54,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:34:54,726 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:34:54,732 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:34:54,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54 WrapperNode [2023-11-22 23:34:54,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:34:54,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:34:54,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:34:54,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:34:54,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:54,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:54,880 INFO L138 Inliner]: procedures = 120, calls = 2195, calls flagged for inlining = 23, calls inlined = 19, statements flattened = 2497 [2023-11-22 23:34:54,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:34:54,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:34:54,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:34:54,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:34:54,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:54,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:54,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:54,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:34:55,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:34:55,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:34:55,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:34:55,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (1/1) ... [2023-11-22 23:34:55,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:34:55,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:34:55,145 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 23:34:55,162 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 23:34:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 23:34:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-22 23:34:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-22 23:34:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:34:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-11-22 23:34:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-11-22 23:34:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-22 23:34:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-22 23:34:55,248 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2023-11-22 23:34:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2023-11-22 23:34:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:34:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2023-11-22 23:34:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2023-11-22 23:34:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2023-11-22 23:34:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2023-11-22 23:34:55,249 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-11-22 23:34:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-11-22 23:34:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-22 23:34:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-22 23:34:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2023-11-22 23:34:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2023-11-22 23:34:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-11-22 23:34:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-11-22 23:34:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:34:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2023-11-22 23:34:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2023-11-22 23:34:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2023-11-22 23:34:55,251 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2023-11-22 23:34:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:34:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:34:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:34:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-11-22 23:34:55,252 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-11-22 23:34:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-22 23:34:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:34:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2023-11-22 23:34:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2023-11-22 23:34:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2023-11-22 23:34:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2023-11-22 23:34:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:34:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-11-22 23:34:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-11-22 23:34:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2023-11-22 23:34:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2023-11-22 23:34:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:34:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2023-11-22 23:34:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2023-11-22 23:34:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-22 23:34:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-11-22 23:34:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-11-22 23:34:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:34:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:34:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2023-11-22 23:34:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2023-11-22 23:34:55,659 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:34:55,662 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:34:55,812 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:55,827 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-11-22 23:34:55,827 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-11-22 23:34:56,155 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,178 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2023-11-22 23:34:56,178 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2023-11-22 23:34:56,192 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,193 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,194 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,199 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,207 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:56,212 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:34:59,960 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##202: assume !false; [2023-11-22 23:34:59,961 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##201: assume false; [2023-11-22 23:34:59,961 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##600: assume !false; [2023-11-22 23:34:59,961 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: CdAudioPnp_#res#1 := 0; [2023-11-22 23:34:59,961 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##65: assume !false; [2023-11-22 23:34:59,962 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##64: assume false; [2023-11-22 23:34:59,964 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !false; [2023-11-22 23:34:59,964 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume false; [2023-11-22 23:34:59,965 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2023-11-22 23:34:59,965 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2023-11-22 23:34:59,965 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##349: assume !false; [2023-11-22 23:34:59,965 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##348: assume false; [2023-11-22 23:34:59,965 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##599: assume false; [2023-11-22 23:35:00,067 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-22 23:35:00,071 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-11-22 23:35:00,071 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-11-22 23:35:00,101 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:35:00,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:35:00,196 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-22 23:35:00,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:35:00 BoogieIcfgContainer [2023-11-22 23:35:00,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:35:00,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:35:00,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:35:00,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:35:00,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:34:53" (1/3) ... [2023-11-22 23:35:00,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4736196e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:35:00, skipping insertion in model container [2023-11-22 23:35:00,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:54" (2/3) ... [2023-11-22 23:35:00,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4736196e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:35:00, skipping insertion in model container [2023-11-22 23:35:00,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:35:00" (3/3) ... [2023-11-22 23:35:00,206 INFO L112 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2023-11-22 23:35:00,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:35:00,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:35:00,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:35:00,272 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;@31e397d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:35:00,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:35:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 478 states have (on average 1.600418410041841) internal successors, (765), 497 states have internal predecessors, (765), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-22 23:35:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 23:35:00,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:00,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:00,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:00,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 347232659, now seen corresponding path program 1 times [2023-11-22 23:35:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836479740] [2023-11-22 23:35:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836479740] [2023-11-22 23:35:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836479740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:00,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599042910] [2023-11-22 23:35:00,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:00,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:00,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:00,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:00,613 INFO L87 Difference]: Start difference. First operand has 612 states, 478 states have (on average 1.600418410041841) internal successors, (765), 497 states have internal predecessors, (765), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:01,057 INFO L93 Difference]: Finished difference Result 1229 states and 2039 transitions. [2023-11-22 23:35:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-22 23:35:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:01,070 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 23:35:01,070 INFO L226 Difference]: Without dead ends: 608 [2023-11-22 23:35:01,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:01,079 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 15 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:01,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1748 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:35:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-22 23:35:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2023-11-22 23:35:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 476 states have (on average 1.5525210084033614) internal successors, (739), 493 states have internal predecessors, (739), 113 states have call successors, (113), 19 states have call predecessors, (113), 18 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-22 23:35:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 949 transitions. [2023-11-22 23:35:01,144 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 949 transitions. Word has length 17 [2023-11-22 23:35:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:01,145 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 949 transitions. [2023-11-22 23:35:01,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 949 transitions. [2023-11-22 23:35:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 23:35:01,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:01,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:35:01,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:01,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1574884979, now seen corresponding path program 1 times [2023-11-22 23:35:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:01,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475015825] [2023-11-22 23:35:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475015825] [2023-11-22 23:35:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475015825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:01,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860058517] [2023-11-22 23:35:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:01,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:01,273 INFO L87 Difference]: Start difference. First operand 608 states and 949 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:01,798 INFO L93 Difference]: Finished difference Result 1097 states and 1694 transitions. [2023-11-22 23:35:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:01,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-22 23:35:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:01,805 INFO L225 Difference]: With dead ends: 1097 [2023-11-22 23:35:01,805 INFO L226 Difference]: Without dead ends: 864 [2023-11-22 23:35:01,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:01,807 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 867 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:01,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1545 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:35:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-11-22 23:35:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 845. [2023-11-22 23:35:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 670 states have (on average 1.5298507462686568) internal successors, (1025), 673 states have internal predecessors, (1025), 142 states have call successors, (142), 33 states have call predecessors, (142), 32 states have return successors, (146), 140 states have call predecessors, (146), 130 states have call successors, (146) [2023-11-22 23:35:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1313 transitions. [2023-11-22 23:35:01,843 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1313 transitions. Word has length 17 [2023-11-22 23:35:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:01,844 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1313 transitions. [2023-11-22 23:35:01,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1313 transitions. [2023-11-22 23:35:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 23:35:01,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:01,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:01,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:35:01,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:01,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1018303499, now seen corresponding path program 1 times [2023-11-22 23:35:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802152010] [2023-11-22 23:35:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:01,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:01,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802152010] [2023-11-22 23:35:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802152010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665020224] [2023-11-22 23:35:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:01,907 INFO L87 Difference]: Start difference. First operand 845 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:02,337 INFO L93 Difference]: Finished difference Result 1828 states and 2888 transitions. [2023-11-22 23:35:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-22 23:35:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:02,343 INFO L225 Difference]: With dead ends: 1828 [2023-11-22 23:35:02,344 INFO L226 Difference]: Without dead ends: 1432 [2023-11-22 23:35:02,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:02,345 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 626 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 2229 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:35:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-22 23:35:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1007. [2023-11-22 23:35:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 790 states have (on average 1.5177215189873419) internal successors, (1199), 792 states have internal predecessors, (1199), 170 states have call successors, (170), 46 states have call predecessors, (170), 46 states have return successors, (217), 170 states have call predecessors, (217), 158 states have call successors, (217) [2023-11-22 23:35:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1586 transitions. [2023-11-22 23:35:02,401 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1586 transitions. Word has length 23 [2023-11-22 23:35:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1586 transitions. [2023-11-22 23:35:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1586 transitions. [2023-11-22 23:35:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 23:35:02,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:02,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:35:02,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:02,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1741893713, now seen corresponding path program 1 times [2023-11-22 23:35:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:02,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175020879] [2023-11-22 23:35:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:02,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:02,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175020879] [2023-11-22 23:35:02,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175020879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:02,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:02,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:02,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720872752] [2023-11-22 23:35:02,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:02,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:02,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:02,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:02,577 INFO L87 Difference]: Start difference. First operand 1007 states and 1586 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:03,497 INFO L93 Difference]: Finished difference Result 1791 states and 2840 transitions. [2023-11-22 23:35:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-22 23:35:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:03,502 INFO L225 Difference]: With dead ends: 1791 [2023-11-22 23:35:03,502 INFO L226 Difference]: Without dead ends: 1149 [2023-11-22 23:35:03,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:03,504 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 1546 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:03,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1426 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 23:35:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-11-22 23:35:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1001. [2023-11-22 23:35:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 785 states have (on average 1.515923566878981) internal successors, (1190), 787 states have internal predecessors, (1190), 169 states have call successors, (169), 45 states have call predecessors, (169), 46 states have return successors, (215), 170 states have call predecessors, (215), 157 states have call successors, (215) [2023-11-22 23:35:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1574 transitions. [2023-11-22 23:35:03,552 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1574 transitions. Word has length 24 [2023-11-22 23:35:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:03,553 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1574 transitions. [2023-11-22 23:35:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1574 transitions. [2023-11-22 23:35:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 23:35:03,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:03,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:03,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:35:03,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:03,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -663485186, now seen corresponding path program 1 times [2023-11-22 23:35:03,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115347037] [2023-11-22 23:35:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:03,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115347037] [2023-11-22 23:35:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115347037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:03,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:03,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363243099] [2023-11-22 23:35:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:03,609 INFO L87 Difference]: Start difference. First operand 1001 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:03,982 INFO L93 Difference]: Finished difference Result 1023 states and 1606 transitions. [2023-11-22 23:35:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-22 23:35:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:03,987 INFO L225 Difference]: With dead ends: 1023 [2023-11-22 23:35:03,987 INFO L226 Difference]: Without dead ends: 1019 [2023-11-22 23:35:03,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:03,988 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 74 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:03,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1697 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:35:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2023-11-22 23:35:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 998. [2023-11-22 23:35:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 783 states have (on average 1.5172413793103448) internal successors, (1188), 783 states have internal predecessors, (1188), 168 states have call successors, (168), 45 states have call predecessors, (168), 46 states have return successors, (214), 169 states have call predecessors, (214), 156 states have call successors, (214) [2023-11-22 23:35:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1570 transitions. [2023-11-22 23:35:04,021 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1570 transitions. Word has length 23 [2023-11-22 23:35:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1570 transitions. [2023-11-22 23:35:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1570 transitions. [2023-11-22 23:35:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 23:35:04,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:04,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 23:35:04,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash 421246042, now seen corresponding path program 1 times [2023-11-22 23:35:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966513784] [2023-11-22 23:35:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:04,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966513784] [2023-11-22 23:35:04,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966513784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:04,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547554048] [2023-11-22 23:35:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:04,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:04,149 INFO L87 Difference]: Start difference. First operand 998 states and 1570 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:04,454 INFO L93 Difference]: Finished difference Result 1573 states and 2433 transitions. [2023-11-22 23:35:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-22 23:35:04,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:04,459 INFO L225 Difference]: With dead ends: 1573 [2023-11-22 23:35:04,459 INFO L226 Difference]: Without dead ends: 1449 [2023-11-22 23:35:04,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:04,460 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 850 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:04,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1502 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:35:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-22 23:35:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1417. [2023-11-22 23:35:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1116 states have (on average 1.5134408602150538) internal successors, (1689), 1113 states have internal predecessors, (1689), 224 states have call successors, (224), 70 states have call predecessors, (224), 76 states have return successors, (294), 233 states have call predecessors, (294), 216 states have call successors, (294) [2023-11-22 23:35:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2207 transitions. [2023-11-22 23:35:04,500 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2207 transitions. Word has length 24 [2023-11-22 23:35:04,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:04,500 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 2207 transitions. [2023-11-22 23:35:04,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2207 transitions. [2023-11-22 23:35:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-22 23:35:04,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:04,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:04,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 23:35:04,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:04,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash -798141484, now seen corresponding path program 1 times [2023-11-22 23:35:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:04,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163904227] [2023-11-22 23:35:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:04,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163904227] [2023-11-22 23:35:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163904227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:04,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651651233] [2023-11-22 23:35:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:04,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:04,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:04,588 INFO L87 Difference]: Start difference. First operand 1417 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:05,178 INFO L93 Difference]: Finished difference Result 1473 states and 2282 transitions. [2023-11-22 23:35:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-22 23:35:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:05,183 INFO L225 Difference]: With dead ends: 1473 [2023-11-22 23:35:05,183 INFO L226 Difference]: Without dead ends: 1434 [2023-11-22 23:35:05,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:05,184 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 943 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:05,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1480 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:35:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2023-11-22 23:35:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1417. [2023-11-22 23:35:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1116 states have (on average 1.5116487455197132) internal successors, (1687), 1113 states have internal predecessors, (1687), 224 states have call successors, (224), 70 states have call predecessors, (224), 76 states have return successors, (294), 233 states have call predecessors, (294), 216 states have call successors, (294) [2023-11-22 23:35:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2205 transitions. [2023-11-22 23:35:05,225 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2205 transitions. Word has length 30 [2023-11-22 23:35:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:05,225 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 2205 transitions. [2023-11-22 23:35:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2205 transitions. [2023-11-22 23:35:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 23:35:05,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:05,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:05,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 23:35:05,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:05,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1086162577, now seen corresponding path program 1 times [2023-11-22 23:35:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833290905] [2023-11-22 23:35:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:05,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:05,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833290905] [2023-11-22 23:35:05,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833290905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:05,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:05,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:05,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545345361] [2023-11-22 23:35:05,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:05,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:05,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:05,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:05,326 INFO L87 Difference]: Start difference. First operand 1417 states and 2205 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:05,924 INFO L93 Difference]: Finished difference Result 1462 states and 2264 transitions. [2023-11-22 23:35:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 23:35:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:05,929 INFO L225 Difference]: With dead ends: 1462 [2023-11-22 23:35:05,929 INFO L226 Difference]: Without dead ends: 1400 [2023-11-22 23:35:05,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:05,930 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 922 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:05,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1478 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:35:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-11-22 23:35:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1398. [2023-11-22 23:35:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1099 states have (on average 1.515923566878981) internal successors, (1666), 1103 states have internal predecessors, (1666), 224 states have call successors, (224), 70 states have call predecessors, (224), 74 states have return successors, (285), 224 states have call predecessors, (285), 216 states have call successors, (285) [2023-11-22 23:35:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2175 transitions. [2023-11-22 23:35:05,971 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2175 transitions. Word has length 32 [2023-11-22 23:35:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:05,971 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 2175 transitions. [2023-11-22 23:35:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2175 transitions. [2023-11-22 23:35:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 23:35:05,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:05,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 23:35:05,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1894242415, now seen corresponding path program 1 times [2023-11-22 23:35:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452610021] [2023-11-22 23:35:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:06,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452610021] [2023-11-22 23:35:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452610021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:06,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:06,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916605624] [2023-11-22 23:35:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:06,148 INFO L87 Difference]: Start difference. First operand 1398 states and 2175 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:06,875 INFO L93 Difference]: Finished difference Result 1667 states and 2580 transitions. [2023-11-22 23:35:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 23:35:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:06,880 INFO L225 Difference]: With dead ends: 1667 [2023-11-22 23:35:06,881 INFO L226 Difference]: Without dead ends: 1658 [2023-11-22 23:35:06,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:06,883 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 1170 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1753 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:35:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-22 23:35:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1421. [2023-11-22 23:35:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1120 states have (on average 1.511607142857143) internal successors, (1693), 1125 states have internal predecessors, (1693), 224 states have call successors, (224), 70 states have call predecessors, (224), 76 states have return successors, (287), 225 states have call predecessors, (287), 216 states have call successors, (287) [2023-11-22 23:35:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2204 transitions. [2023-11-22 23:35:06,933 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2204 transitions. Word has length 32 [2023-11-22 23:35:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:06,933 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2204 transitions. [2023-11-22 23:35:06,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2204 transitions. [2023-11-22 23:35:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 23:35:06,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:06,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:06,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 23:35:06,936 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:06,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1893965585, now seen corresponding path program 1 times [2023-11-22 23:35:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:06,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230228614] [2023-11-22 23:35:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230228614] [2023-11-22 23:35:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230228614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:06,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007657983] [2023-11-22 23:35:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:06,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:06,994 INFO L87 Difference]: Start difference. First operand 1421 states and 2204 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:07,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:07,382 INFO L93 Difference]: Finished difference Result 1978 states and 3046 transitions. [2023-11-22 23:35:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 23:35:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:07,390 INFO L225 Difference]: With dead ends: 1978 [2023-11-22 23:35:07,390 INFO L226 Difference]: Without dead ends: 1950 [2023-11-22 23:35:07,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:07,391 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 896 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:07,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1192 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:35:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-11-22 23:35:07,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1933. [2023-11-22 23:35:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1525 states have (on average 1.5114754098360657) internal successors, (2305), 1528 states have internal predecessors, (2305), 294 states have call successors, (294), 100 states have call predecessors, (294), 113 states have return successors, (386), 304 states have call predecessors, (386), 286 states have call successors, (386) [2023-11-22 23:35:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2985 transitions. [2023-11-22 23:35:07,455 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2985 transitions. Word has length 32 [2023-11-22 23:35:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:07,455 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 2985 transitions. [2023-11-22 23:35:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2985 transitions. [2023-11-22 23:35:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-22 23:35:07,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:07,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:07,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 23:35:07,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:07,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1879620676, now seen corresponding path program 1 times [2023-11-22 23:35:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:07,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367599651] [2023-11-22 23:35:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367599651] [2023-11-22 23:35:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367599651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:35:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503116450] [2023-11-22 23:35:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:35:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:35:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:07,540 INFO L87 Difference]: Start difference. First operand 1933 states and 2985 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:07,987 INFO L93 Difference]: Finished difference Result 2413 states and 3720 transitions. [2023-11-22 23:35:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:35:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-22 23:35:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:07,998 INFO L225 Difference]: With dead ends: 2413 [2023-11-22 23:35:07,998 INFO L226 Difference]: Without dead ends: 2400 [2023-11-22 23:35:07,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:35:07,999 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 344 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:08,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1946 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:35:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-11-22 23:35:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1930. [2023-11-22 23:35:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1522 states have (on average 1.5098554533508541) internal successors, (2298), 1525 states have internal predecessors, (2298), 294 states have call successors, (294), 100 states have call predecessors, (294), 113 states have return successors, (386), 304 states have call predecessors, (386), 286 states have call successors, (386) [2023-11-22 23:35:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2978 transitions. [2023-11-22 23:35:08,111 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2978 transitions. Word has length 32 [2023-11-22 23:35:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:08,111 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2978 transitions. [2023-11-22 23:35:08,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2978 transitions. [2023-11-22 23:35:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-22 23:35:08,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:08,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:08,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 23:35:08,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:08,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1408148696, now seen corresponding path program 1 times [2023-11-22 23:35:08,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:08,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883876264] [2023-11-22 23:35:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883876264] [2023-11-22 23:35:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883876264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478213986] [2023-11-22 23:35:08,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:08,207 INFO L87 Difference]: Start difference. First operand 1930 states and 2978 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:08,664 INFO L93 Difference]: Finished difference Result 1942 states and 2990 transitions. [2023-11-22 23:35:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:08,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-22 23:35:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:08,680 INFO L225 Difference]: With dead ends: 1942 [2023-11-22 23:35:08,680 INFO L226 Difference]: Without dead ends: 1920 [2023-11-22 23:35:08,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:08,681 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:08,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2559 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:35:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2023-11-22 23:35:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1920. [2023-11-22 23:35:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1512 states have (on average 1.5112433862433863) internal successors, (2285), 1515 states have internal predecessors, (2285), 294 states have call successors, (294), 100 states have call predecessors, (294), 113 states have return successors, (386), 304 states have call predecessors, (386), 286 states have call successors, (386) [2023-11-22 23:35:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2965 transitions. [2023-11-22 23:35:08,747 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2965 transitions. Word has length 33 [2023-11-22 23:35:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:08,748 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2965 transitions. [2023-11-22 23:35:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:35:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2965 transitions. [2023-11-22 23:35:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-22 23:35:08,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:08,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:08,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 23:35:08,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:08,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1755119225, now seen corresponding path program 1 times [2023-11-22 23:35:08,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:08,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545595206] [2023-11-22 23:35:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:35:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545595206] [2023-11-22 23:35:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545595206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:08,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:08,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:35:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737893117] [2023-11-22 23:35:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:35:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:35:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:08,899 INFO L87 Difference]: Start difference. First operand 1920 states and 2965 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 23:35:14,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:14,809 INFO L93 Difference]: Finished difference Result 2684 states and 4098 transitions. [2023-11-22 23:35:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 23:35:14,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-22 23:35:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:14,814 INFO L225 Difference]: With dead ends: 2684 [2023-11-22 23:35:14,814 INFO L226 Difference]: Without dead ends: 1206 [2023-11-22 23:35:14,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:35:14,817 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 754 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:14,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2314 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-22 23:35:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-22 23:35:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1078. [2023-11-22 23:35:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 850 states have (on average 1.4976470588235293) internal successors, (1273), 856 states have internal predecessors, (1273), 164 states have call successors, (164), 56 states have call predecessors, (164), 63 states have return successors, (209), 165 states have call predecessors, (209), 156 states have call successors, (209) [2023-11-22 23:35:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1646 transitions. [2023-11-22 23:35:14,858 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1646 transitions. Word has length 39 [2023-11-22 23:35:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:14,859 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1646 transitions. [2023-11-22 23:35:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 23:35:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1646 transitions. [2023-11-22 23:35:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 23:35:14,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:14,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:14,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 23:35:14,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:14,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -733137841, now seen corresponding path program 1 times [2023-11-22 23:35:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:14,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153512851] [2023-11-22 23:35:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:35:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153512851] [2023-11-22 23:35:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153512851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:14,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:14,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:35:14,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42134773] [2023-11-22 23:35:14,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:14,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:35:14,976 INFO L87 Difference]: Start difference. First operand 1078 states and 1646 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 23:35:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:20,355 INFO L93 Difference]: Finished difference Result 1656 states and 2537 transitions. [2023-11-22 23:35:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-22 23:35:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:20,364 INFO L225 Difference]: With dead ends: 1656 [2023-11-22 23:35:20,364 INFO L226 Difference]: Without dead ends: 1063 [2023-11-22 23:35:20,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:20,372 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 914 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:20,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1174 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-22 23:35:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-11-22 23:35:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1021. [2023-11-22 23:35:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 800 states have (on average 1.49) internal successors, (1192), 804 states have internal predecessors, (1192), 161 states have call successors, (161), 55 states have call predecessors, (161), 59 states have return successors, (205), 161 states have call predecessors, (205), 155 states have call successors, (205) [2023-11-22 23:35:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1558 transitions. [2023-11-22 23:35:20,432 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1558 transitions. Word has length 40 [2023-11-22 23:35:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:20,433 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1558 transitions. [2023-11-22 23:35:20,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 23:35:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1558 transitions. [2023-11-22 23:35:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-22 23:35:20,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:20,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 23:35:20,435 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:20,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1184564953, now seen corresponding path program 1 times [2023-11-22 23:35:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201776950] [2023-11-22 23:35:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 23:35:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:35:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201776950] [2023-11-22 23:35:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201776950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:20,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:35:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085570250] [2023-11-22 23:35:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:35:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:35:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:20,547 INFO L87 Difference]: Start difference. First operand 1021 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:35:24,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:25,534 INFO L93 Difference]: Finished difference Result 1115 states and 1732 transitions. [2023-11-22 23:35:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:35:25,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-22 23:35:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:25,539 INFO L225 Difference]: With dead ends: 1115 [2023-11-22 23:35:25,539 INFO L226 Difference]: Without dead ends: 1088 [2023-11-22 23:35:25,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:35:25,540 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 270 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:25,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2337 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-22 23:35:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-11-22 23:35:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 996. [2023-11-22 23:35:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 783 states have (on average 1.4904214559386972) internal successors, (1167), 790 states have internal predecessors, (1167), 156 states have call successors, (156), 51 states have call predecessors, (156), 56 states have return successors, (212), 154 states have call predecessors, (212), 150 states have call successors, (212) [2023-11-22 23:35:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1535 transitions. [2023-11-22 23:35:25,587 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1535 transitions. Word has length 41 [2023-11-22 23:35:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:25,588 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1535 transitions. [2023-11-22 23:35:25,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:35:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1535 transitions. [2023-11-22 23:35:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-22 23:35:25,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:25,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 23:35:25,590 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash 366916503, now seen corresponding path program 1 times [2023-11-22 23:35:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:25,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104135446] [2023-11-22 23:35:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:25,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 23:35:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:35:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:25,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:25,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104135446] [2023-11-22 23:35:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104135446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:25,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:35:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505228093] [2023-11-22 23:35:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:25,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:35:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:35:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:25,723 INFO L87 Difference]: Start difference. First operand 996 states and 1535 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:28,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:30,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:34,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:34,752 INFO L93 Difference]: Finished difference Result 1061 states and 1651 transitions. [2023-11-22 23:35:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 23:35:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2023-11-22 23:35:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:34,756 INFO L225 Difference]: With dead ends: 1061 [2023-11-22 23:35:34,756 INFO L226 Difference]: Without dead ends: 1054 [2023-11-22 23:35:34,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:35:34,757 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 243 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:34,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2370 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 827 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-11-22 23:35:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-11-22 23:35:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1007. [2023-11-22 23:35:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 794 states have (on average 1.486146095717884) internal successors, (1180), 801 states have internal predecessors, (1180), 156 states have call successors, (156), 51 states have call predecessors, (156), 56 states have return successors, (212), 154 states have call predecessors, (212), 150 states have call successors, (212) [2023-11-22 23:35:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1548 transitions. [2023-11-22 23:35:34,834 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1548 transitions. Word has length 41 [2023-11-22 23:35:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:34,834 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1548 transitions. [2023-11-22 23:35:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1548 transitions. [2023-11-22 23:35:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 23:35:34,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:34,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:34,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 23:35:34,836 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:34,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1501735978, now seen corresponding path program 1 times [2023-11-22 23:35:34,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:34,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145277068] [2023-11-22 23:35:34,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:34,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 23:35:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:35:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145277068] [2023-11-22 23:35:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145277068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:35:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845431009] [2023-11-22 23:35:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:35:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:35:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:35:35,015 INFO L87 Difference]: Start difference. First operand 1007 states and 1548 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:41,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:42,489 INFO L93 Difference]: Finished difference Result 1061 states and 1647 transitions. [2023-11-22 23:35:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:35:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2023-11-22 23:35:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:42,493 INFO L225 Difference]: With dead ends: 1061 [2023-11-22 23:35:42,493 INFO L226 Difference]: Without dead ends: 1056 [2023-11-22 23:35:42,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:35:42,494 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1123 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 269 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:42,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 2839 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1245 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-11-22 23:35:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-11-22 23:35:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1007. [2023-11-22 23:35:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 794 states have (on average 1.4848866498740554) internal successors, (1179), 801 states have internal predecessors, (1179), 156 states have call successors, (156), 51 states have call predecessors, (156), 56 states have return successors, (212), 154 states have call predecessors, (212), 150 states have call successors, (212) [2023-11-22 23:35:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1547 transitions. [2023-11-22 23:35:42,539 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1547 transitions. Word has length 42 [2023-11-22 23:35:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:42,539 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1547 transitions. [2023-11-22 23:35:42,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1547 transitions. [2023-11-22 23:35:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-22 23:35:42,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:42,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 23:35:42,541 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash 415309689, now seen corresponding path program 1 times [2023-11-22 23:35:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862265541] [2023-11-22 23:35:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 23:35:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:35:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:35:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:42,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862265541] [2023-11-22 23:35:42,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862265541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:42,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:42,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:35:42,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045863400] [2023-11-22 23:35:42,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:35:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:42,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:35:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:42,684 INFO L87 Difference]: Start difference. First operand 1007 states and 1547 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:44,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:47,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:35:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:49,377 INFO L93 Difference]: Finished difference Result 2060 states and 3190 transitions. [2023-11-22 23:35:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:35:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2023-11-22 23:35:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:49,381 INFO L225 Difference]: With dead ends: 2060 [2023-11-22 23:35:49,381 INFO L226 Difference]: Without dead ends: 1055 [2023-11-22 23:35:49,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:35:49,383 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 217 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:49,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2430 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-22 23:35:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-11-22 23:35:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1010. [2023-11-22 23:35:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 797 states have (on average 1.4830614805520703) internal successors, (1182), 804 states have internal predecessors, (1182), 156 states have call successors, (156), 51 states have call predecessors, (156), 56 states have return successors, (212), 154 states have call predecessors, (212), 150 states have call successors, (212) [2023-11-22 23:35:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1550 transitions. [2023-11-22 23:35:49,495 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1550 transitions. Word has length 43 [2023-11-22 23:35:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:49,495 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1550 transitions. [2023-11-22 23:35:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:35:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1550 transitions. [2023-11-22 23:35:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-22 23:35:49,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:49,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:35:49,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 23:35:49,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:49,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash -453586236, now seen corresponding path program 1 times [2023-11-22 23:35:49,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:49,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412302202] [2023-11-22 23:35:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:49,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 23:35:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 23:35:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 23:35:49,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412302202] [2023-11-22 23:35:49,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412302202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:35:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464720268] [2023-11-22 23:35:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:49,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:35:49,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:35:49,645 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 23:35:49,657 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 23:35:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:50,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 23:35:50,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:35:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 23:35:50,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:35:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 23:35:50,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464720268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:35:50,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:35:50,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2023-11-22 23:35:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299131638] [2023-11-22 23:35:50,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:35:50,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:35:50,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:35:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:35:50,107 INFO L87 Difference]: Start difference. First operand 1010 states and 1550 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:35:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:55,584 INFO L93 Difference]: Finished difference Result 2067 states and 3199 transitions. [2023-11-22 23:35:55,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:35:55,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2023-11-22 23:35:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:55,590 INFO L225 Difference]: With dead ends: 2067 [2023-11-22 23:35:55,590 INFO L226 Difference]: Without dead ends: 1060 [2023-11-22 23:35:55,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:35:55,592 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 221 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:55,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 3140 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-22 23:35:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-11-22 23:35:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1015. [2023-11-22 23:35:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 802 states have (on average 1.4800498753117206) internal successors, (1187), 809 states have internal predecessors, (1187), 156 states have call successors, (156), 51 states have call predecessors, (156), 56 states have return successors, (212), 154 states have call predecessors, (212), 150 states have call successors, (212) [2023-11-22 23:35:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1555 transitions. [2023-11-22 23:35:55,681 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1555 transitions. Word has length 46 [2023-11-22 23:35:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:55,681 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1555 transitions. [2023-11-22 23:35:55,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:35:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1555 transitions. [2023-11-22 23:35:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-22 23:35:55,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:55,683 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-22 23:35:55,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 23:35:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:35:55,896 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1645825159, now seen corresponding path program 2 times [2023-11-22 23:35:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540002956] [2023-11-22 23:35:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 23:35:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 23:35:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 23:35:56,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540002956] [2023-11-22 23:35:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540002956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:35:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957542208] [2023-11-22 23:35:56,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:35:56,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:35:56,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:35:56,112 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 23:35:56,138 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 23:35:56,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 23:35:56,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:35:56,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 23:35:56,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:35:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 23:35:56,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:35:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957542208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:35:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-22 23:35:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049962327] [2023-11-22 23:35:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:35:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:35:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:35:56,478 INFO L87 Difference]: Start difference. First operand 1015 states and 1555 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:35:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:35:56,937 INFO L93 Difference]: Finished difference Result 1757 states and 2741 transitions. [2023-11-22 23:35:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:35:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2023-11-22 23:35:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:35:56,945 INFO L225 Difference]: With dead ends: 1757 [2023-11-22 23:35:56,948 INFO L226 Difference]: Without dead ends: 1022 [2023-11-22 23:35:56,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:35:56,951 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:35:56,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2496 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:35:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-11-22 23:35:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2023-11-22 23:35:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 807 states have (on average 1.479553903345725) internal successors, (1194), 816 states have internal predecessors, (1194), 156 states have call successors, (156), 51 states have call predecessors, (156), 58 states have return successors, (214), 154 states have call predecessors, (214), 150 states have call successors, (214) [2023-11-22 23:35:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1564 transitions. [2023-11-22 23:35:57,003 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1564 transitions. Word has length 51 [2023-11-22 23:35:57,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:35:57,003 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1564 transitions. [2023-11-22 23:35:57,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:35:57,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1564 transitions. [2023-11-22 23:35:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-22 23:35:57,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:35:57,006 INFO L195 NwaCegarLoop]: trace histogram [4, 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 23:35:57,036 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 23:35:57,219 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,SelfDestructingSolverStorable19 [2023-11-22 23:35:57,219 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:35:57,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:35:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2079858315, now seen corresponding path program 1 times [2023-11-22 23:35:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:35:57,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022827528] [2023-11-22 23:35:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:35:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:35:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:35:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 23:35:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:35:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 23:35:57,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:35:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022827528] [2023-11-22 23:35:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022827528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:35:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:35:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:35:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296545825] [2023-11-22 23:35:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:35:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:35:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:35:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:35:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:35:57,368 INFO L87 Difference]: Start difference. First operand 1022 states and 1564 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:36:02,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:03,935 INFO L93 Difference]: Finished difference Result 1590 states and 2413 transitions. [2023-11-22 23:36:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:36:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2023-11-22 23:36:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:03,944 INFO L225 Difference]: With dead ends: 1590 [2023-11-22 23:36:03,944 INFO L226 Difference]: Without dead ends: 1118 [2023-11-22 23:36:03,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:36:03,946 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 572 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:03,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 2273 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-22 23:36:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-11-22 23:36:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1022. [2023-11-22 23:36:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 807 states have (on average 1.4783147459727386) internal successors, (1193), 816 states have internal predecessors, (1193), 156 states have call successors, (156), 51 states have call predecessors, (156), 58 states have return successors, (214), 154 states have call predecessors, (214), 150 states have call successors, (214) [2023-11-22 23:36:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1563 transitions. [2023-11-22 23:36:04,007 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1563 transitions. Word has length 54 [2023-11-22 23:36:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:04,007 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1563 transitions. [2023-11-22 23:36:04,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:36:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1563 transitions. [2023-11-22 23:36:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-22 23:36:04,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:04,009 INFO L195 NwaCegarLoop]: trace histogram [4, 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 23:36:04,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 23:36:04,009 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:04,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 647879866, now seen corresponding path program 1 times [2023-11-22 23:36:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258524786] [2023-11-22 23:36:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:36:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:36:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 23:36:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258524786] [2023-11-22 23:36:04,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258524786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:36:04,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:36:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 23:36:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757175337] [2023-11-22 23:36:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:36:04,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:36:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:36:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:36:04,294 INFO L87 Difference]: Start difference. First operand 1022 states and 1563 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:11,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:13,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:13,234 INFO L93 Difference]: Finished difference Result 1053 states and 1607 transitions. [2023-11-22 23:36:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:36:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2023-11-22 23:36:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:13,240 INFO L225 Difference]: With dead ends: 1053 [2023-11-22 23:36:13,240 INFO L226 Difference]: Without dead ends: 1038 [2023-11-22 23:36:13,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:36:13,241 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 79 mSDsluCounter, 5456 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6246 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-22 23:36:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-11-22 23:36:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1020. [2023-11-22 23:36:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 806 states have (on average 1.477667493796526) internal successors, (1191), 815 states have internal predecessors, (1191), 155 states have call successors, (155), 51 states have call predecessors, (155), 58 states have return successors, (213), 153 states have call predecessors, (213), 149 states have call successors, (213) [2023-11-22 23:36:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1559 transitions. [2023-11-22 23:36:13,298 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1559 transitions. Word has length 53 [2023-11-22 23:36:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:13,298 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1559 transitions. [2023-11-22 23:36:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1559 transitions. [2023-11-22 23:36:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-22 23:36:13,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:13,300 INFO L195 NwaCegarLoop]: trace histogram [4, 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 23:36:13,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 23:36:13,300 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:13,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1616183513, now seen corresponding path program 1 times [2023-11-22 23:36:13,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:13,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3539787] [2023-11-22 23:36:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:13,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:36:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:36:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 23:36:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3539787] [2023-11-22 23:36:13,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3539787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:36:13,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:36:13,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 23:36:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663030677] [2023-11-22 23:36:13,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:36:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:36:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:36:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:36:13,552 INFO L87 Difference]: Start difference. First operand 1020 states and 1559 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:21,634 INFO L93 Difference]: Finished difference Result 1051 states and 1603 transitions. [2023-11-22 23:36:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:36:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2023-11-22 23:36:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:21,637 INFO L225 Difference]: With dead ends: 1051 [2023-11-22 23:36:21,637 INFO L226 Difference]: Without dead ends: 1036 [2023-11-22 23:36:21,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:36:21,638 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 69 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6228 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:21,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 6228 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-11-22 23:36:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2023-11-22 23:36:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1018. [2023-11-22 23:36:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 805 states have (on average 1.4770186335403728) internal successors, (1189), 814 states have internal predecessors, (1189), 154 states have call successors, (154), 51 states have call predecessors, (154), 58 states have return successors, (212), 152 states have call predecessors, (212), 148 states have call successors, (212) [2023-11-22 23:36:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1555 transitions. [2023-11-22 23:36:21,692 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1555 transitions. Word has length 53 [2023-11-22 23:36:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:21,692 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1555 transitions. [2023-11-22 23:36:21,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1555 transitions. [2023-11-22 23:36:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:36:21,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:21,699 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-22 23:36:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 23:36:21,699 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1881147494, now seen corresponding path program 1 times [2023-11-22 23:36:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615514032] [2023-11-22 23:36:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 23:36:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:36:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 23:36:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615514032] [2023-11-22 23:36:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615514032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:36:21,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:36:21,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 23:36:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363380371] [2023-11-22 23:36:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:36:21,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:36:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:36:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:36:21,920 INFO L87 Difference]: Start difference. First operand 1018 states and 1555 transitions. Second operand has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:29,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:31,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:31,442 INFO L93 Difference]: Finished difference Result 1048 states and 1598 transitions. [2023-11-22 23:36:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:36:31,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-11-22 23:36:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:31,444 INFO L225 Difference]: With dead ends: 1048 [2023-11-22 23:36:31,444 INFO L226 Difference]: Without dead ends: 1033 [2023-11-22 23:36:31,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:36:31,445 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 79 mSDsluCounter, 5399 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6178 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:31,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6178 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-22 23:36:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2023-11-22 23:36:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1015. [2023-11-22 23:36:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 803 states have (on average 1.4769613947696139) internal successors, (1186), 812 states have internal predecessors, (1186), 153 states have call successors, (153), 51 states have call predecessors, (153), 58 states have return successors, (211), 151 states have call predecessors, (211), 147 states have call successors, (211) [2023-11-22 23:36:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1550 transitions. [2023-11-22 23:36:31,502 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1550 transitions. Word has length 52 [2023-11-22 23:36:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:31,502 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1550 transitions. [2023-11-22 23:36:31,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:36:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1550 transitions. [2023-11-22 23:36:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:36:31,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:31,504 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-22 23:36:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 23:36:31,504 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:31,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash 61418596, now seen corresponding path program 1 times [2023-11-22 23:36:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105635862] [2023-11-22 23:36:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 23:36:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 23:36:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:36:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105635862] [2023-11-22 23:36:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105635862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:36:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69272613] [2023-11-22 23:36:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:36:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:36:31,664 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 23:36:31,665 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 23:36:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:32,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 23:36:32,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:36:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:36:32,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:36:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 23:36:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69272613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:36:32,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:36:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 11 [2023-11-22 23:36:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574867396] [2023-11-22 23:36:32,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:36:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:36:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:36:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:36:32,125 INFO L87 Difference]: Start difference. First operand 1015 states and 1550 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:36:37,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:40,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:40,732 INFO L93 Difference]: Finished difference Result 2068 states and 3169 transitions. [2023-11-22 23:36:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 23:36:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2023-11-22 23:36:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:40,735 INFO L225 Difference]: With dead ends: 2068 [2023-11-22 23:36:40,735 INFO L226 Difference]: Without dead ends: 1057 [2023-11-22 23:36:40,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:36:40,737 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 220 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:40,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 4504 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-22 23:36:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-11-22 23:36:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1022. [2023-11-22 23:36:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 810 states have (on average 1.4728395061728394) internal successors, (1193), 819 states have internal predecessors, (1193), 153 states have call successors, (153), 51 states have call predecessors, (153), 58 states have return successors, (211), 151 states have call predecessors, (211), 147 states have call successors, (211) [2023-11-22 23:36:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1557 transitions. [2023-11-22 23:36:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1557 transitions. Word has length 52 [2023-11-22 23:36:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:40,793 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1557 transitions. [2023-11-22 23:36:40,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:36:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1557 transitions. [2023-11-22 23:36:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-22 23:36:40,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:40,796 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:40,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 23:36:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:36:41,010 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:41,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash 367856952, now seen corresponding path program 2 times [2023-11-22 23:36:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:41,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897521119] [2023-11-22 23:36:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:41,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:36:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 23:36:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 23:36:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:41,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897521119] [2023-11-22 23:36:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897521119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:36:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689103659] [2023-11-22 23:36:41,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:36:41,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:36:41,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:36:41,286 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 23:36:41,308 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 23:36:41,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:36:41,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:36:41,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-22 23:36:41,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:36:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-22 23:36:42,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:36:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-22 23:36:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689103659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:36:42,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:36:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2023-11-22 23:36:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373460981] [2023-11-22 23:36:42,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:36:42,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 23:36:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 23:36:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-22 23:36:42,132 INFO L87 Difference]: Start difference. First operand 1022 states and 1557 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:36:52,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:36:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:36:52,511 INFO L93 Difference]: Finished difference Result 2084 states and 3191 transitions. [2023-11-22 23:36:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 23:36:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2023-11-22 23:36:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:36:52,514 INFO L225 Difference]: With dead ends: 2084 [2023-11-22 23:36:52,514 INFO L226 Difference]: Without dead ends: 1070 [2023-11-22 23:36:52,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2023-11-22 23:36:52,517 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 231 mSDsluCounter, 6559 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 7321 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:36:52,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 7321 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-11-22 23:36:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2023-11-22 23:36:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1035. [2023-11-22 23:36:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 823 states have (on average 1.465370595382746) internal successors, (1206), 832 states have internal predecessors, (1206), 153 states have call successors, (153), 51 states have call predecessors, (153), 58 states have return successors, (211), 151 states have call predecessors, (211), 147 states have call successors, (211) [2023-11-22 23:36:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1570 transitions. [2023-11-22 23:36:52,567 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1570 transitions. Word has length 59 [2023-11-22 23:36:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:36:52,568 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1570 transitions. [2023-11-22 23:36:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:36:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1570 transitions. [2023-11-22 23:36:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-22 23:36:52,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:36:52,570 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:52,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 23:36:52,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 23:36:52,785 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:36:52,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:36:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1464810514, now seen corresponding path program 3 times [2023-11-22 23:36:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:36:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519609841] [2023-11-22 23:36:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:36:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:36:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:36:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-22 23:36:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:36:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-22 23:36:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:36:53,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519609841] [2023-11-22 23:36:53,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519609841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:36:53,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393286217] [2023-11-22 23:36:53,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:36:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:36:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:36:53,178 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 23:36:53,179 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 23:36:53,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 23:36:53,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:36:53,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 23:36:53,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:36:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-22 23:36:53,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:36:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-22 23:36:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393286217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:36:53,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:36:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 18 [2023-11-22 23:36:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998653188] [2023-11-22 23:36:53,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:36:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 23:36:53,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:36:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 23:36:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-22 23:36:53,872 INFO L87 Difference]: Start difference. First operand 1035 states and 1570 transitions. Second operand has 18 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:37:01,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 23:37:03,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:37:03,473 INFO L93 Difference]: Finished difference Result 2122 states and 3255 transitions. [2023-11-22 23:37:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-22 23:37:03,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-11-22 23:37:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:37:03,477 INFO L225 Difference]: With dead ends: 2122 [2023-11-22 23:37:03,477 INFO L226 Difference]: Without dead ends: 1093 [2023-11-22 23:37:03,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2023-11-22 23:37:03,479 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 229 mSDsluCounter, 5146 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 5900 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:37:03,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 5900 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-22 23:37:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-22 23:37:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1056. [2023-11-22 23:37:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 842 states have (on average 1.4691211401425177) internal successors, (1237), 851 states have internal predecessors, (1237), 153 states have call successors, (153), 53 states have call predecessors, (153), 60 states have return successors, (213), 151 states have call predecessors, (213), 147 states have call successors, (213) [2023-11-22 23:37:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1603 transitions. [2023-11-22 23:37:03,549 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1603 transitions. Word has length 72 [2023-11-22 23:37:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:37:03,549 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1603 transitions. [2023-11-22 23:37:03,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 23:37:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1603 transitions. [2023-11-22 23:37:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 23:37:03,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:37:03,551 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:03,580 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 23:37:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 23:37:03,766 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:37:03,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:37:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash -643036565, now seen corresponding path program 1 times [2023-11-22 23:37:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:37:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986839253] [2023-11-22 23:37:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:37:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:37:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:37:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-22 23:37:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:37:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986839253] [2023-11-22 23:37:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986839253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:37:04,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718615965] [2023-11-22 23:37:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:04,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:37:04,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:37:04,092 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 23:37:04,112 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 23:37:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:04,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-22 23:37:04,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:37:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-22 23:37:04,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:37:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718615965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:37:04,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:37:04,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2023-11-22 23:37:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382290584] [2023-11-22 23:37:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:37:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:37:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:37:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:37:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-22 23:37:04,736 INFO L87 Difference]: Start difference. First operand 1056 states and 1603 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:37:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:37:05,873 INFO L93 Difference]: Finished difference Result 1069 states and 1616 transitions. [2023-11-22 23:37:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 23:37:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2023-11-22 23:37:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:37:05,876 INFO L225 Difference]: With dead ends: 1069 [2023-11-22 23:37:05,876 INFO L226 Difference]: Without dead ends: 1053 [2023-11-22 23:37:05,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-11-22 23:37:05,876 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 13 mSDsluCounter, 6517 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:37:05,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7348 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 23:37:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-11-22 23:37:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1053. [2023-11-22 23:37:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 840 states have (on average 1.4690476190476192) internal successors, (1234), 849 states have internal predecessors, (1234), 152 states have call successors, (152), 53 states have call predecessors, (152), 60 states have return successors, (212), 150 states have call predecessors, (212), 146 states have call successors, (212) [2023-11-22 23:37:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1598 transitions. [2023-11-22 23:37:05,928 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1598 transitions. Word has length 76 [2023-11-22 23:37:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:37:05,929 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1598 transitions. [2023-11-22 23:37:05,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:37:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1598 transitions. [2023-11-22 23:37:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-22 23:37:05,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:37:05,932 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:05,968 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 23:37:06,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 23:37:06,146 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:37:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:37:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -714225885, now seen corresponding path program 1 times [2023-11-22 23:37:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:37:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937582016] [2023-11-22 23:37:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:37:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:37:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 23:37:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-22 23:37:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:37:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937582016] [2023-11-22 23:37:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937582016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:37:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:37:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:37:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563411547] [2023-11-22 23:37:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:37:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:37:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:37:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:37:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:37:06,271 INFO L87 Difference]: Start difference. First operand 1053 states and 1598 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:37:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:37:10,520 INFO L93 Difference]: Finished difference Result 1157 states and 1741 transitions. [2023-11-22 23:37:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:37:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2023-11-22 23:37:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:37:10,523 INFO L225 Difference]: With dead ends: 1157 [2023-11-22 23:37:10,523 INFO L226 Difference]: Without dead ends: 1095 [2023-11-22 23:37:10,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:37:10,524 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 857 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:37:10,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1956 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-22 23:37:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2023-11-22 23:37:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1044. [2023-11-22 23:37:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 835 states have (on average 1.4694610778443113) internal successors, (1227), 844 states have internal predecessors, (1227), 150 states have call successors, (150), 51 states have call predecessors, (150), 58 states have return successors, (210), 148 states have call predecessors, (210), 144 states have call successors, (210) [2023-11-22 23:37:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1587 transitions. [2023-11-22 23:37:10,577 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1587 transitions. Word has length 77 [2023-11-22 23:37:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:37:10,578 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1587 transitions. [2023-11-22 23:37:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 23:37:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1587 transitions. [2023-11-22 23:37:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-22 23:37:10,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:37:10,579 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-22 23:37:10,580 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:37:10,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:37:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 223002762, now seen corresponding path program 1 times [2023-11-22 23:37:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:37:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493519483] [2023-11-22 23:37:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:37:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 23:37:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:37:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-11-22 23:37:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:37:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493519483] [2023-11-22 23:37:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493519483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:37:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:37:10,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 23:37:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40834204] [2023-11-22 23:37:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:37:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:37:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:37:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:37:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:37:10,933 INFO L87 Difference]: Start difference. First operand 1044 states and 1587 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:37:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:37:20,543 INFO L93 Difference]: Finished difference Result 1078 states and 1634 transitions. [2023-11-22 23:37:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 23:37:20,544 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-11-22 23:37:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:37:20,546 INFO L225 Difference]: With dead ends: 1078 [2023-11-22 23:37:20,546 INFO L226 Difference]: Without dead ends: 1062 [2023-11-22 23:37:20,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:37:20,547 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 79 mSDsluCounter, 6057 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:37:20,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6827 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-22 23:37:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-11-22 23:37:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1042. [2023-11-22 23:37:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 834 states have (on average 1.4688249400479616) internal successors, (1225), 843 states have internal predecessors, (1225), 149 states have call successors, (149), 51 states have call predecessors, (149), 58 states have return successors, (209), 147 states have call predecessors, (209), 143 states have call successors, (209) [2023-11-22 23:37:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1583 transitions. [2023-11-22 23:37:20,605 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1583 transitions. Word has length 77 [2023-11-22 23:37:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:37:20,605 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1583 transitions. [2023-11-22 23:37:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 23:37:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1583 transitions. [2023-11-22 23:37:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-22 23:37:20,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:37:20,607 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-22 23:37:20,607 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:37:20,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:37:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 99252889, now seen corresponding path program 4 times [2023-11-22 23:37:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:37:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667033675] [2023-11-22 23:37:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:37:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 23:37:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:37:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-22 23:37:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:37:21,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667033675] [2023-11-22 23:37:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667033675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:37:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557698102] [2023-11-22 23:37:21,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 23:37:21,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:37:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:37:21,005 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 23:37:21,006 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 23:37:21,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 23:37:21,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:37:21,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-22 23:37:21,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:37:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-22 23:37:21,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:37:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-22 23:37:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557698102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:37:21,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:37:21,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 23 [2023-11-22 23:37:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170773394] [2023-11-22 23:37:21,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:37:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-22 23:37:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:37:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-22 23:37:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-22 23:37:21,818 INFO L87 Difference]: Start difference. First operand 1042 states and 1583 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 21 states have internal predecessors, (69), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:37:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:37:31,194 INFO L93 Difference]: Finished difference Result 2126 states and 3247 transitions. [2023-11-22 23:37:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-22 23:37:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 21 states have internal predecessors, (69), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2023-11-22 23:37:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:37:31,197 INFO L225 Difference]: With dead ends: 2126 [2023-11-22 23:37:31,197 INFO L226 Difference]: Without dead ends: 1094 [2023-11-22 23:37:31,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2023-11-22 23:37:31,199 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 224 mSDsluCounter, 7869 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-22 23:37:31,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 8623 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-22 23:37:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-11-22 23:37:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1057. [2023-11-22 23:37:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 849 states have (on average 1.4605418138987043) internal successors, (1240), 858 states have internal predecessors, (1240), 149 states have call successors, (149), 51 states have call predecessors, (149), 58 states have return successors, (209), 147 states have call predecessors, (209), 143 states have call successors, (209) [2023-11-22 23:37:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1598 transitions. [2023-11-22 23:37:31,255 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1598 transitions. Word has length 77 [2023-11-22 23:37:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:37:31,255 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1598 transitions. [2023-11-22 23:37:31,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 21 states have internal predecessors, (69), 1 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 23:37:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1598 transitions. [2023-11-22 23:37:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 23:37:31,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:37:31,257 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:31,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-22 23:37:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:37:31,472 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:37:31,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:37:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash -833335131, now seen corresponding path program 5 times [2023-11-22 23:37:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:37:31,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812632640] [2023-11-22 23:37:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:37:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:37:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 23:37:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 23:37:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:37:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-22 23:37:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:37:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812632640] [2023-11-22 23:37:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812632640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:37:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132924331] [2023-11-22 23:37:32,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 23:37:32,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:37:32,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:37:32,272 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 23:37:32,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15