/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 15:07:03,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 15:07:04,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 15:07:04,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 15:07:04,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 15:07:04,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 15:07:04,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 15:07:04,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 15:07:04,106 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 15:07:04,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 15:07:04,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 15:07:04,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 15:07:04,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 15:07:04,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 15:07:04,110 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 15:07:04,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 15:07:04,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 15:07:04,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 15:07:04,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 15:07:04,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 15:07:04,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 15:07:04,116 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 15:07:04,116 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 15:07:04,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 15:07:04,117 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 15:07:04,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 15:07:04,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 15:07:04,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 15:07:04,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 15:07:04,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 15:07:04,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 15:07:04,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:07:04,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 15:07:04,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 15:07:04,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 15:07:04,119 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 15:07:04,120 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 15:07:04,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 15:07:04,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 15:07:04,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 15:07:04,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 15:07:04,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:04,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 15:07:04,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 15:07:04,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 15:07:04,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 15:07:04,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 15:07:04,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i [2024-11-04 15:07:05,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 15:07:05,940 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-04 15:07:06,354 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 15:07:06,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i [2024-11-04 15:07:06,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16e5a50d/56f5e669b9694e29a0602add120e9ace/FLAG3b3622768 [2024-11-04 15:07:06,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16e5a50d/56f5e669b9694e29a0602add120e9ace [2024-11-04 15:07:06,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 15:07:06,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 15:07:06,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 15:07:06,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 15:07:06,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 15:07:06,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:07:06" (1/1) ... [2024-11-04 15:07:06,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558d374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:06, skipping insertion in model container [2024-11-04 15:07:06,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:07:06" (1/1) ... [2024-11-04 15:07:06,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:07:06,860 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-04 15:07:06,870 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-04 15:07:07,839 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,936 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,940 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,941 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,955 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,957 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,958 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,958 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,959 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,959 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,960 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,964 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,964 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,966 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,966 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,973 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,974 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,974 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,974 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,976 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,976 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,977 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,978 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,979 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,979 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,980 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:07,980 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:07,981 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,263 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,263 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,264 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,264 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,369 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:08,410 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 15:07:08,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:07:08,440 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-04 15:07:08,441 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-04 15:07:08,466 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,476 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,477 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,477 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,483 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,484 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,484 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,484 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,485 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,485 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,489 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,491 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,491 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,492 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,495 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,503 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,503 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,503 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,504 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,504 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,505 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,505 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,505 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,506 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,506 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,506 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,507 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,507 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,507 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,562 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,562 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,563 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,563 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,594 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:08,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:08,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 15:07:08,628 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-04 15:07:08,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-04 15:07:08,659 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,659 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,659 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,660 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,660 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,665 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,666 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,666 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,666 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,667 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,667 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,668 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,668 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:08,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:08,930 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-04 15:07:08,944 INFO L204 MainTranslator]: Completed translation [2024-11-04 15:07:08,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08 WrapperNode [2024-11-04 15:07:08,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 15:07:08,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 15:07:08,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 15:07:08,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 15:07:08,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,054 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-04 15:07:09,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 15:07:09,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 15:07:09,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 15:07:09,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 15:07:09,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,105 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-04 15:07:09,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 15:07:09,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 15:07:09,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 15:07:09,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 15:07:09,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (1/1) ... [2024-11-04 15:07:09,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:07:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:09,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-04 15:07:09,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-04 15:07:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 15:07:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 15:07:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-04 15:07:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-04 15:07:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 15:07:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 15:07:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 15:07:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 15:07:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 15:07:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-04 15:07:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-04 15:07:09,537 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 15:07:09,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 15:07:09,861 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-04 15:07:09,861 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 15:07:09,883 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 15:07:09,883 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-04 15:07:09,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:07:09 BoogieIcfgContainer [2024-11-04 15:07:09,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 15:07:09,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 15:07:09,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 15:07:09,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 15:07:09,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:07:06" (1/3) ... [2024-11-04 15:07:09,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797b19cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:07:09, skipping insertion in model container [2024-11-04 15:07:09,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:08" (2/3) ... [2024-11-04 15:07:09,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797b19cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:07:09, skipping insertion in model container [2024-11-04 15:07:09,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:07:09" (3/3) ... [2024-11-04 15:07:09,893 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2024-11-04 15:07:09,908 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 15:07:09,908 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 15:07:09,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 15:07:09,981 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b1b1d06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 15:07:09,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 15:07:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-04 15:07:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-04 15:07:09,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:09,996 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:09,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:10,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-04 15:07:10,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645812889] [2024-11-04 15:07:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:10,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:10,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 15:07:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:10,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 15:07:10,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-04 15:07:10,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-04 15:07:10,354 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645812889] [2024-11-04 15:07:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [645812889] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-04 15:07:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129127309] [2024-11-04 15:07:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 15:07:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 15:07:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:07:10,383 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:10,407 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-04 15:07:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 15:07:10,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-04 15:07:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:10,415 INFO L225 Difference]: With dead ends: 130 [2024-11-04 15:07:10,415 INFO L226 Difference]: Without dead ends: 64 [2024-11-04 15:07:10,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:07:10,421 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:10,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-04 15:07:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-04 15:07:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-04 15:07:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-04 15:07:10,457 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-04 15:07:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:10,457 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-04 15:07:10,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-04 15:07:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-04 15:07:10,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:10,461 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:10,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:10,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:10,662 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:10,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-04 15:07:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:10,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489609201] [2024-11-04 15:07:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:10,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:10,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 15:07:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:10,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:07:10,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-04 15:07:10,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-04 15:07:11,056 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489609201] [2024-11-04 15:07:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [489609201] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:11,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:11,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-04 15:07:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362032434] [2024-11-04 15:07:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:11,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 15:07:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 15:07:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:11,063 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-04 15:07:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:11,130 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2024-11-04 15:07:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 15:07:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-04 15:07:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:11,137 INFO L225 Difference]: With dead ends: 116 [2024-11-04 15:07:11,137 INFO L226 Difference]: Without dead ends: 66 [2024-11-04 15:07:11,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:11,139 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:11,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-04 15:07:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-04 15:07:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-04 15:07:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2024-11-04 15:07:11,153 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 68 [2024-11-04 15:07:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:11,154 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2024-11-04 15:07:11,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-04 15:07:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2024-11-04 15:07:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-04 15:07:11,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:11,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:11,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 15:07:11,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:11,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:11,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2024-11-04 15:07:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799729428] [2024-11-04 15:07:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:11,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:11,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:11,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:11,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 15:07:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:11,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 15:07:11,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-04 15:07:11,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-04 15:07:11,818 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:11,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799729428] [2024-11-04 15:07:11,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1799729428] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:11,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:11,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-04 15:07:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631096068] [2024-11-04 15:07:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:11,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 15:07:11,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 15:07:11,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:11,824 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:11,967 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2024-11-04 15:07:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 15:07:11,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-04 15:07:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:11,969 INFO L225 Difference]: With dead ends: 123 [2024-11-04 15:07:11,969 INFO L226 Difference]: Without dead ends: 71 [2024-11-04 15:07:11,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:11,971 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 21 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:11,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 300 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:07:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-04 15:07:11,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-04 15:07:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 51 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 15:07:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-04 15:07:11,985 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 70 [2024-11-04 15:07:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:11,985 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-04 15:07:11,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-04 15:07:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-04 15:07:11,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:11,991 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:12,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-04 15:07:12,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:12,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:12,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2024-11-04 15:07:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:12,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918457925] [2024-11-04 15:07:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:12,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:12,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:12,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 15:07:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:12,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-04 15:07:12,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-04 15:07:12,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-04 15:07:12,654 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918457925] [2024-11-04 15:07:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [918457925] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:12,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:12,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-11-04 15:07:12,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842004905] [2024-11-04 15:07:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:12,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 15:07:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 15:07:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-04 15:07:12,657 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:12,872 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2024-11-04 15:07:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:07:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-04 15:07:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:12,874 INFO L225 Difference]: With dead ends: 135 [2024-11-04 15:07:12,874 INFO L226 Difference]: Without dead ends: 80 [2024-11-04 15:07:12,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-04 15:07:12,876 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 30 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:12,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 354 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 15:07:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-04 15:07:12,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-04 15:07:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 15:07:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-04 15:07:12,894 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 72 [2024-11-04 15:07:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:12,896 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-04 15:07:12,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-04 15:07:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-04 15:07:12,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:12,899 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:12,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:13,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:13,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2024-11-04 15:07:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512420047] [2024-11-04 15:07:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:13,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:13,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-04 15:07:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:13,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:07:13,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-04 15:07:13,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-04 15:07:13,336 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512420047] [2024-11-04 15:07:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [512420047] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:13,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:13,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-04 15:07:13,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629196503] [2024-11-04 15:07:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:13,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-04 15:07:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:13,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-04 15:07:13,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:13,338 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:13,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:13,373 INFO L93 Difference]: Finished difference Result 132 states and 182 transitions. [2024-11-04 15:07:13,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-04 15:07:13,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-04 15:07:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:13,375 INFO L225 Difference]: With dead ends: 132 [2024-11-04 15:07:13,375 INFO L226 Difference]: Without dead ends: 75 [2024-11-04 15:07:13,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:13,377 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:13,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-04 15:07:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-04 15:07:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 15:07:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-04 15:07:13,394 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 73 [2024-11-04 15:07:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:13,395 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-04 15:07:13,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-04 15:07:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-04 15:07:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-04 15:07:13,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:13,397 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:13,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-04 15:07:13,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,598 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:13,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2024-11-04 15:07:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614728725] [2024-11-04 15:07:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:13,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:13,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-04 15:07:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:13,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:07:13,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-04 15:07:13,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-04 15:07:13,916 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614728725] [2024-11-04 15:07:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [614728725] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-04 15:07:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670390556] [2024-11-04 15:07:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:13,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 15:07:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 15:07:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:13,919 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-04 15:07:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:13,977 INFO L93 Difference]: Finished difference Result 123 states and 163 transitions. [2024-11-04 15:07:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 15:07:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2024-11-04 15:07:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:13,979 INFO L225 Difference]: With dead ends: 123 [2024-11-04 15:07:13,979 INFO L226 Difference]: Without dead ends: 72 [2024-11-04 15:07:13,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:13,981 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:13,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-04 15:07:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-04 15:07:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-04 15:07:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-11-04 15:07:14,000 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 81 [2024-11-04 15:07:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:14,000 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-11-04 15:07:14,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-04 15:07:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-11-04 15:07:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-04 15:07:14,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:14,002 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-04 15:07:14,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-04 15:07:14,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:14,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 416892704, now seen corresponding path program 1 times [2024-11-04 15:07:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:14,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910636374] [2024-11-04 15:07:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:14,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:14,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:14,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-04 15:07:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:14,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-04 15:07:14,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-04 15:07:14,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-04 15:07:14,673 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:14,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910636374] [2024-11-04 15:07:14,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [910636374] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:14,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:14,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-04 15:07:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965483477] [2024-11-04 15:07:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:14,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 15:07:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 15:07:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-04 15:07:14,675 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 15:07:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:14,816 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2024-11-04 15:07:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 15:07:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2024-11-04 15:07:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:14,819 INFO L225 Difference]: With dead ends: 132 [2024-11-04 15:07:14,819 INFO L226 Difference]: Without dead ends: 74 [2024-11-04 15:07:14,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-04 15:07:14,820 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:14,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 363 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:07:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-04 15:07:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-04 15:07:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-04 15:07:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2024-11-04 15:07:14,834 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 83 [2024-11-04 15:07:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:14,835 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2024-11-04 15:07:14,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 15:07:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2024-11-04 15:07:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-04 15:07:14,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:14,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:14,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:15,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:15,043 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:15,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1552562003, now seen corresponding path program 1 times [2024-11-04 15:07:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064027153] [2024-11-04 15:07:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:15,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:15,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-04 15:07:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:15,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:07:15,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-04 15:07:15,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-04 15:07:15,502 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:15,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064027153] [2024-11-04 15:07:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1064027153] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2024-11-04 15:07:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457857126] [2024-11-04 15:07:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:15,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 15:07:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 15:07:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:07:15,504 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 15:07:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:15,703 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2024-11-04 15:07:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:07:15,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2024-11-04 15:07:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:15,705 INFO L225 Difference]: With dead ends: 132 [2024-11-04 15:07:15,705 INFO L226 Difference]: Without dead ends: 73 [2024-11-04 15:07:15,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-04 15:07:15,706 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 31 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:15,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 408 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 15:07:15,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-04 15:07:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-04 15:07:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.25) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-04 15:07:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2024-11-04 15:07:15,717 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 85 [2024-11-04 15:07:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:15,718 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2024-11-04 15:07:15,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-04 15:07:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2024-11-04 15:07:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-04 15:07:15,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:15,722 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:15,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:15,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:15,923 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:15,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 572959972, now seen corresponding path program 2 times [2024-11-04 15:07:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342056811] [2024-11-04 15:07:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:15,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:15,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:15,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:15,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-04 15:07:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:16,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 15:07:16,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-04 15:07:16,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-04 15:07:16,230 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342056811] [2024-11-04 15:07:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1342056811] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:16,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-04 15:07:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048363302] [2024-11-04 15:07:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:16,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 15:07:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 15:07:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:16,232 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-04 15:07:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:16,281 INFO L93 Difference]: Finished difference Result 125 states and 163 transitions. [2024-11-04 15:07:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 15:07:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2024-11-04 15:07:16,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:16,285 INFO L225 Difference]: With dead ends: 125 [2024-11-04 15:07:16,285 INFO L226 Difference]: Without dead ends: 71 [2024-11-04 15:07:16,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:16,286 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:16,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-04 15:07:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-04 15:07:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.24) internal successors, (62), 53 states have internal predecessors, (62), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-04 15:07:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2024-11-04 15:07:16,298 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 94 [2024-11-04 15:07:16,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:16,301 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2024-11-04 15:07:16,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-04 15:07:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2024-11-04 15:07:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-04 15:07:16,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:16,302 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:16,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-04 15:07:16,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:16,503 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:16,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -959329865, now seen corresponding path program 1 times [2024-11-04 15:07:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565005381] [2024-11-04 15:07:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:16,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:16,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:16,505 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:16,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-04 15:07:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:16,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 15:07:16,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-04 15:07:16,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-04 15:07:16,821 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565005381] [2024-11-04 15:07:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [565005381] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:16,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:16,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-04 15:07:16,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966196347] [2024-11-04 15:07:16,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:16,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 15:07:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:16,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 15:07:16,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:16,823 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-04 15:07:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:16,874 INFO L93 Difference]: Finished difference Result 121 states and 158 transitions. [2024-11-04 15:07:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 15:07:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-04 15:07:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:16,878 INFO L225 Difference]: With dead ends: 121 [2024-11-04 15:07:16,878 INFO L226 Difference]: Without dead ends: 71 [2024-11-04 15:07:16,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:16,879 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:16,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-04 15:07:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-04 15:07:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 51 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-04 15:07:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2024-11-04 15:07:16,888 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 96 [2024-11-04 15:07:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:16,888 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2024-11-04 15:07:16,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-04 15:07:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2024-11-04 15:07:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-04 15:07:16,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:16,891 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:16,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-04 15:07:17,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:17,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:17,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1252523644, now seen corresponding path program 1 times [2024-11-04 15:07:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473213135] [2024-11-04 15:07:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:17,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:17,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-04 15:07:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:17,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-04 15:07:17,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:17,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-04 15:07:17,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-04 15:07:21,702 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|))))) is different from true [2024-11-04 15:07:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-04 15:07:22,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-04 15:07:22,375 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473213135] [2024-11-04 15:07:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [473213135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:07:22,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:07:22,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-04 15:07:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870834444] [2024-11-04 15:07:22,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:07:22,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:07:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:07:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-04 15:07:22,378 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-04 15:07:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:23,529 INFO L93 Difference]: Finished difference Result 168 states and 230 transitions. [2024-11-04 15:07:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:07:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 98 [2024-11-04 15:07:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:23,531 INFO L225 Difference]: With dead ends: 168 [2024-11-04 15:07:23,531 INFO L226 Difference]: Without dead ends: 113 [2024-11-04 15:07:23,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-04 15:07:23,533 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 60 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:23,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 626 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 335 Invalid, 1 Unknown, 269 Unchecked, 0.9s Time] [2024-11-04 15:07:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-04 15:07:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 87. [2024-11-04 15:07:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 67 states have internal predecessors, (83), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-04 15:07:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-11-04 15:07:23,545 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 98 [2024-11-04 15:07:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:23,546 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-11-04 15:07:23,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-04 15:07:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-11-04 15:07:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-04 15:07:23,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:23,547 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:23,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:23,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:23,748 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:23,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 479996356, now seen corresponding path program 1 times [2024-11-04 15:07:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586889256] [2024-11-04 15:07:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:23,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:23,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-04 15:07:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:23,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 15:07:23,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:07:23,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:07:24,003 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586889256] [2024-11-04 15:07:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1586889256] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:24,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 15:07:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960035861] [2024-11-04 15:07:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:24,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:07:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:07:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:24,005 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-04 15:07:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:24,036 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2024-11-04 15:07:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:07:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-04 15:07:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:24,037 INFO L225 Difference]: With dead ends: 161 [2024-11-04 15:07:24,038 INFO L226 Difference]: Without dead ends: 88 [2024-11-04 15:07:24,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:24,039 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:24,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-04 15:07:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-04 15:07:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 67 states have internal predecessors, (82), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-04 15:07:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2024-11-04 15:07:24,051 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 98 [2024-11-04 15:07:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:24,051 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2024-11-04 15:07:24,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-04 15:07:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2024-11-04 15:07:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-04 15:07:24,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:24,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:24,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-04 15:07:24,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:24,253 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:24,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1800233476, now seen corresponding path program 1 times [2024-11-04 15:07:24,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:24,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350308383] [2024-11-04 15:07:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:24,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:24,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:24,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:24,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-04 15:07:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:24,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 15:07:24,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 15:07:24,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-04 15:07:24,490 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350308383] [2024-11-04 15:07:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [350308383] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:24,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 15:07:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500351239] [2024-11-04 15:07:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:24,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:07:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:07:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:24,492 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-04 15:07:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:24,519 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-11-04 15:07:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:07:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-04 15:07:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:24,521 INFO L225 Difference]: With dead ends: 160 [2024-11-04 15:07:24,521 INFO L226 Difference]: Without dead ends: 87 [2024-11-04 15:07:24,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:24,522 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:24,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-04 15:07:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2024-11-04 15:07:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 64 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-04 15:07:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-04 15:07:24,532 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 98 [2024-11-04 15:07:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:24,532 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-04 15:07:24,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-04 15:07:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-04 15:07:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:24,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:24,534 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:24,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-04 15:07:24,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:24,734 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:24,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash -596272544, now seen corresponding path program 1 times [2024-11-04 15:07:24,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146057616] [2024-11-04 15:07:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:24,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:24,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:24,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:24,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-04 15:07:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:24,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-04 15:07:24,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:24,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-04 15:07:24,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-04 15:07:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-04 15:07:26,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:07:27,239 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146057616] [2024-11-04 15:07:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [146057616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:07:27,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:07:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-04 15:07:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372484048] [2024-11-04 15:07:27,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:07:27,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-04 15:07:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-04 15:07:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-04 15:07:27,241 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-04 15:07:31,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:35,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:39,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:43,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:48,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:50,119 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2024-11-04 15:07:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:07:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 100 [2024-11-04 15:07:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:50,121 INFO L225 Difference]: With dead ends: 201 [2024-11-04 15:07:50,121 INFO L226 Difference]: Without dead ends: 129 [2024-11-04 15:07:50,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 175 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-04 15:07:50,122 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 90 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 47 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:50,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 569 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 326 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2024-11-04 15:07:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-04 15:07:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-11-04 15:07:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-04 15:07:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2024-11-04 15:07:50,138 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 100 [2024-11-04 15:07:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:50,139 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2024-11-04 15:07:50,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-04 15:07:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2024-11-04 15:07:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:50,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:50,140 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:50,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:50,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:50,341 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:50,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1405619170, now seen corresponding path program 1 times [2024-11-04 15:07:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909282832] [2024-11-04 15:07:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:50,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:50,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:50,343 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:50,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-04 15:07:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:50,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-04 15:07:50,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:50,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-04 15:07:50,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 15:07:50,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-04 15:07:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-04 15:07:52,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:53,044 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-04 15:07:53,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 103 [2024-11-04 15:07:53,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-04 15:07:53,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 97 [2024-11-04 15:07:53,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2024-11-04 15:07:53,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-04 15:07:53,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-04 15:07:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-04 15:07:53,531 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909282832] [2024-11-04 15:07:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [909282832] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:07:53,531 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:07:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2024-11-04 15:07:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267606871] [2024-11-04 15:07:53,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:53,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 15:07:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 15:07:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-04 15:07:53,532 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-04 15:07:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:56,097 INFO L93 Difference]: Finished difference Result 306 states and 381 transitions. [2024-11-04 15:07:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-04 15:07:56,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 100 [2024-11-04 15:07:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:56,100 INFO L225 Difference]: With dead ends: 306 [2024-11-04 15:07:56,100 INFO L226 Difference]: Without dead ends: 240 [2024-11-04 15:07:56,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 174 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-04 15:07:56,101 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 81 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:56,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 487 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-04 15:07:56,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-04 15:07:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 125. [2024-11-04 15:07:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 99 states have internal predecessors, (117), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-04 15:07:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2024-11-04 15:07:56,123 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 100 [2024-11-04 15:07:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:56,124 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2024-11-04 15:07:56,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-04 15:07:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2024-11-04 15:07:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:56,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:56,126 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:56,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:56,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:56,327 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:56,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1798646180, now seen corresponding path program 1 times [2024-11-04 15:07:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346279156] [2024-11-04 15:07:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:56,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:56,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-04 15:07:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:56,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-04 15:07:56,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:56,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-04 15:07:56,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-04 15:07:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-04 15:07:59,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:08:01,064 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:01,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346279156] [2024-11-04 15:08:01,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1346279156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:08:01,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:08:01,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-04 15:08:01,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132261150] [2024-11-04 15:08:01,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:08:01,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-04 15:08:01,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-04 15:08:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-04 15:08:01,067 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-04 15:08:05,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:09,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:13,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:16,848 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-11-04 15:08:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:08:16,849 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 100 [2024-11-04 15:08:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:16,850 INFO L225 Difference]: With dead ends: 187 [2024-11-04 15:08:16,850 INFO L226 Difference]: Without dead ends: 127 [2024-11-04 15:08:16,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 170 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2024-11-04 15:08:16,851 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 66 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:16,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 886 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 631 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2024-11-04 15:08:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-04 15:08:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-04 15:08:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 99 states have internal predecessors, (116), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-04 15:08:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2024-11-04 15:08:16,867 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 100 [2024-11-04 15:08:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:16,867 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2024-11-04 15:08:16,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-04 15:08:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2024-11-04 15:08:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:08:16,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:16,868 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:16,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-04 15:08:17,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:17,069 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:17,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1540480742, now seen corresponding path program 1 times [2024-11-04 15:08:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:17,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002524820] [2024-11-04 15:08:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:17,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:17,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:17,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-04 15:08:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:17,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-04 15:08:17,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-04 15:08:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-04 15:08:19,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:22,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2024-11-04 15:08:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 15:08:22,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:22,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002524820] [2024-11-04 15:08:22,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1002524820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:08:22,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:08:22,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2024-11-04 15:08:22,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262839354] [2024-11-04 15:08:22,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:08:22,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-04 15:08:22,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-04 15:08:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-04 15:08:22,484 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 28 states, 28 states have (on average 4.642857142857143) internal successors, (130), 26 states have internal predecessors, (130), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-04 15:08:26,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:32,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:38,698 INFO L93 Difference]: Finished difference Result 335 states and 421 transitions. [2024-11-04 15:08:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-04 15:08:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.642857142857143) internal successors, (130), 26 states have internal predecessors, (130), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) Word has length 100 [2024-11-04 15:08:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:38,700 INFO L225 Difference]: With dead ends: 335 [2024-11-04 15:08:38,700 INFO L226 Difference]: Without dead ends: 230 [2024-11-04 15:08:38,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 176 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2024-11-04 15:08:38,702 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 179 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:38,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1426 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1138 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2024-11-04 15:08:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-04 15:08:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2024-11-04 15:08:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 151 states have (on average 1.1986754966887416) internal successors, (181), 156 states have internal predecessors, (181), 27 states have call successors, (27), 15 states have call predecessors, (27), 19 states have return successors, (36), 26 states have call predecessors, (36), 25 states have call successors, (36) [2024-11-04 15:08:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 244 transitions. [2024-11-04 15:08:38,752 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 244 transitions. Word has length 100 [2024-11-04 15:08:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:38,752 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 244 transitions. [2024-11-04 15:08:38,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.642857142857143) internal successors, (130), 26 states have internal predecessors, (130), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-04 15:08:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 244 transitions. [2024-11-04 15:08:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-04 15:08:38,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:38,754 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:38,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-04 15:08:38,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:38,956 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:38,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1063573994, now seen corresponding path program 1 times [2024-11-04 15:08:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201049916] [2024-11-04 15:08:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:38,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:38,957 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:38,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-04 15:08:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:39,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-04 15:08:39,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:39,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-04 15:08:39,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7