/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:00:36,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:00:36,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:00:36,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:00:36,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:00:36,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:00:36,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:00:36,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:00:36,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:00:36,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:00:36,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:00:36,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:00:36,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:00:36,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:00:36,757 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:00:36,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:00:36,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:00:36,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:00:36,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:00:36,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:00:36,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:00:36,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:00:36,761 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:00:36,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:00:36,762 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:00:36,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:00:36,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:00:36,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:00:36,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:00:36,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:00:36,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:00:36,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:36,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:00:36,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:00:36,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:00:36,764 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:00:36,764 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:00:36,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:00:36,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:00:36,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:00:36,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:00:36,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:00:36,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:00:37,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:00:37,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:00:37,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:00:37,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:00:37,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness_negated.i [2024-11-05 14:00:38,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:00:38,812 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:00:38,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness_negated.i [2024-11-05 14:00:38,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3edab3cc/2682a310cc5848aea6537418bbe430cd/FLAG2a155a613 [2024-11-05 14:00:38,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3edab3cc/2682a310cc5848aea6537418bbe430cd [2024-11-05 14:00:38,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:00:38,865 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:00:38,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:38,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:00:38,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:00:38,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:38" (1/1) ... [2024-11-05 14:00:38,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f928446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:38, skipping insertion in model container [2024-11-05 14:00:38,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:38" (1/1) ... [2024-11-05 14:00:38,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:39,194 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_remove_harness_negated.i[4496,4509] [2024-11-05 14:00:39,200 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_remove_harness_negated.i[4556,4569] [2024-11-05 14:00:39,695 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,794 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,795 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,795 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,804 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,806 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,807 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,807 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,808 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,808 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,809 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,812 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,812 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,815 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,816 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,827 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,828 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,828 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,828 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,830 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,832 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,832 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,833 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,835 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,836 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,836 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,836 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:39,837 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:39,837 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,173 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,174 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,175 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,175 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,319 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:40,362 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 14:00:40,409 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:40,416 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_remove_harness_negated.i[4496,4509] [2024-11-05 14:00:40,417 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_remove_harness_negated.i[4556,4569] [2024-11-05 14:00:40,445 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,458 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,458 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,458 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,462 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,463 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,463 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,463 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,464 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,464 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,464 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,466 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,466 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,467 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,467 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,470 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,470 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,471 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,471 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,472 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,472 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,472 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,472 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,473 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,473 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,474 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,474 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,474 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,474 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,529 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,529 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,530 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,530 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:40,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:40,578 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:00:40,594 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_remove_harness_negated.i[4496,4509] [2024-11-05 14:00:40,595 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_remove_harness_negated.i[4556,4569] [2024-11-05 14:00:40,636 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,637 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,637 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,637 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,637 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,646 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,647 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,647 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,648 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,648 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,649 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,649 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,649 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:40,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:40,896 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 14:00:40,906 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:00:40,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40 WrapperNode [2024-11-05 14:00:40,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:40,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:40,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:00:40,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:00:40,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:40,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,045 INFO L138 Inliner]: procedures = 687, calls = 1048, calls flagged for inlining = 49, calls inlined = 4, statements flattened = 88 [2024-11-05 14:00:41,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:41,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:00:41,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:00:41,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:00:41,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,089 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 5, 23]. 77 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 7 writes are split as follows [0, 0, 7]. [2024-11-05 14:00:41,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:00:41,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:00:41,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:00:41,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:00:41,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (1/1) ... [2024-11-05 14:00:41,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:41,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:00:41,158 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) [2024-11-05 14:00:41,160 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 [2024-11-05 14:00:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-05 14:00:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-05 14:00:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-05 14:00:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-05 14:00:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:00:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:00:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:00:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:00:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 14:00:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:00:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:00:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-05 14:00:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-05 14:00:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-05 14:00:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-05 14:00:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:00:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:00:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:00:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 14:00:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 14:00:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 14:00:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 14:00:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 14:00:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 14:00:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 14:00:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 14:00:41,451 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:00:41,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:00:41,912 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-05 14:00:41,912 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:00:41,930 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:00:41,931 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-05 14:00:41,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:41 BoogieIcfgContainer [2024-11-05 14:00:41,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:00:41,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:00:41,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:00:41,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:00:41,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:00:38" (1/3) ... [2024-11-05 14:00:41,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0109ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:41, skipping insertion in model container [2024-11-05 14:00:41,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:40" (2/3) ... [2024-11-05 14:00:41,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0109ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:41, skipping insertion in model container [2024-11-05 14:00:41,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:41" (3/3) ... [2024-11-05 14:00:41,939 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness_negated.i [2024-11-05 14:00:41,955 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:00:41,955 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:00:42,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:00:42,019 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;@c3faab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:00:42,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:00:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-05 14:00:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-05 14:00:42,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:42,032 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:42,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:42,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash -262517723, now seen corresponding path program 1 times [2024-11-05 14:00:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252894373] [2024-11-05 14:00:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:42,047 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:42,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:42,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:42,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:00:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:42,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:00:42,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:42,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:42,325 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252894373] [2024-11-05 14:00:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1252894373] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:42,325 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:42,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:00:42,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368100970] [2024-11-05 14:00:42,332 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:42,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:00:42,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:00:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:42,364 INFO L87 Difference]: Start difference. First operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:00:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:42,386 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2024-11-05 14:00:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:00:42,387 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-05 14:00:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:42,394 INFO L225 Difference]: With dead ends: 142 [2024-11-05 14:00:42,394 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 14:00:42,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:42,400 INFO L432 NwaCegarLoop]: 91 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, 91 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 [2024-11-05 14:00:42,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 14:00:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-05 14:00:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 45 states have internal predecessors, (53), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-11-05 14:00:42,433 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 48 [2024-11-05 14:00:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:42,434 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-11-05 14:00:42,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:00:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-11-05 14:00:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-05 14:00:42,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:42,436 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:42,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 14:00:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:42,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1978069188, now seen corresponding path program 1 times [2024-11-05 14:00:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474445087] [2024-11-05 14:00:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:42,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:00:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:42,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 14:00:42,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:42,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:42,923 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:42,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474445087] [2024-11-05 14:00:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [474445087] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:42,924 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:42,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-05 14:00:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498468460] [2024-11-05 14:00:42,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:42,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:00:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:00:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:42,927 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:42,977 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-11-05 14:00:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2024-11-05 14:00:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:42,980 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:00:42,980 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:00:42,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:42,981 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:42,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:00:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-05 14:00:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2024-11-05 14:00:42,994 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 54 [2024-11-05 14:00:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:42,995 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2024-11-05 14:00:42,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2024-11-05 14:00:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-05 14:00:42,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:42,997 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-05 14:00:43,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-05 14:00:43,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:43,199 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:43,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1424861892, now seen corresponding path program 1 times [2024-11-05 14:00:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720216701] [2024-11-05 14:00:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:43,200 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:43,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:43,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:43,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:00:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:43,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:00:43,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:43,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:43,568 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:43,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720216701] [2024-11-05 14:00:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [720216701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:43,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:43,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-05 14:00:43,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18946533] [2024-11-05 14:00:43,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:43,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 14:00:43,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:43,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 14:00:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:00:43,574 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:43,756 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2024-11-05 14:00:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:00:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2024-11-05 14:00:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:43,759 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:00:43,759 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:00:43,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:00:43,760 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:43,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:00:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:00:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-05 14:00:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.18) internal successors, (59), 51 states have internal predecessors, (59), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-11-05 14:00:43,777 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 56 [2024-11-05 14:00:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:43,778 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-11-05 14:00:43,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-11-05 14:00:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-05 14:00:43,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:43,783 INFO L215 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:43,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-05 14:00:43,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:43,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:43,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1236820284, now seen corresponding path program 2 times [2024-11-05 14:00:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:43,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909313837] [2024-11-05 14:00:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:43,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:43,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:00:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:44,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 14:00:44,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:44,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:44,576 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909313837] [2024-11-05 14:00:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [909313837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:44,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-05 14:00:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721848743] [2024-11-05 14:00:44,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:44,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 14:00:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 14:00:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-05 14:00:44,581 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:45,157 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2024-11-05 14:00:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 14:00:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2024-11-05 14:00:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:45,159 INFO L225 Difference]: With dead ends: 136 [2024-11-05 14:00:45,160 INFO L226 Difference]: Without dead ends: 83 [2024-11-05 14:00:45,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=347, Unknown=0, NotChecked=0, Total=552 [2024-11-05 14:00:45,161 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:45,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 667 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:00:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-05 14:00:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-05 14:00:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-11-05 14:00:45,177 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 60 [2024-11-05 14:00:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:45,177 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-11-05 14:00:45,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-11-05 14:00:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:00:45,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:45,179 INFO L215 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:45,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 14:00:45,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:45,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:45,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1672316612, now seen corresponding path program 3 times [2024-11-05 14:00:45,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:45,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934414558] [2024-11-05 14:00:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:45,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:45,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:00:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:45,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-05 14:00:45,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:45,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:46,684 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934414558] [2024-11-05 14:00:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1934414558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-05 14:00:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769900214] [2024-11-05 14:00:46,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-05 14:00:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-05 14:00:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 14:00:46,687 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:47,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:47,291 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2024-11-05 14:00:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:00:47,297 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2024-11-05 14:00:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:47,298 INFO L225 Difference]: With dead ends: 138 [2024-11-05 14:00:47,298 INFO L226 Difference]: Without dead ends: 85 [2024-11-05 14:00:47,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 14:00:47,300 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:47,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1414 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 14:00:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-05 14:00:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-05 14:00:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.15) internal successors, (69), 61 states have internal predecessors, (69), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2024-11-05 14:00:47,311 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 68 [2024-11-05 14:00:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:47,311 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2024-11-05 14:00:47,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2024-11-05 14:00:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:00:47,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:47,315 INFO L215 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:47,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:00:47,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:47,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:47,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -345587516, now seen corresponding path program 4 times [2024-11-05 14:00:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601679927] [2024-11-05 14:00:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:47,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:47,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:00:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:47,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:00:47,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:47,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:47,784 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601679927] [2024-11-05 14:00:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1601679927] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:47,785 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:47,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-05 14:00:47,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119891910] [2024-11-05 14:00:47,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:47,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:00:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:00:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:00:47,786 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-05 14:00:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:47,886 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2024-11-05 14:00:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2024-11-05 14:00:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:47,888 INFO L225 Difference]: With dead ends: 95 [2024-11-05 14:00:47,888 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 14:00:47,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:00:47,889 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:47,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 563 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:00:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 14:00:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-05 14:00:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.140625) internal successors, (73), 66 states have internal predecessors, (73), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-05 14:00:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2024-11-05 14:00:47,899 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 70 [2024-11-05 14:00:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:47,899 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2024-11-05 14:00:47,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-05 14:00:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2024-11-05 14:00:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:00:47,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:47,901 INFO L215 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:47,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:00:48,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:48,102 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:48,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1913649715, now seen corresponding path program 1 times [2024-11-05 14:00:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:48,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855040256] [2024-11-05 14:00:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:48,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:48,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:00:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:48,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:00:48,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:48,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:48,373 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855040256] [2024-11-05 14:00:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1855040256] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:48,373 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-05 14:00:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731235436] [2024-11-05 14:00:48,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:48,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:00:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:00:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:48,375 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:00:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:48,417 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2024-11-05 14:00:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2024-11-05 14:00:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:48,420 INFO L225 Difference]: With dead ends: 143 [2024-11-05 14:00:48,420 INFO L226 Difference]: Without dead ends: 98 [2024-11-05 14:00:48,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:48,421 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:48,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 173 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-05 14:00:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-05 14:00:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 70 states have internal predecessors, (78), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-05 14:00:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2024-11-05 14:00:48,438 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 70 [2024-11-05 14:00:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:48,442 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2024-11-05 14:00:48,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:00:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2024-11-05 14:00:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-05 14:00:48,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:48,444 INFO L215 NwaCegarLoop]: trace histogram [16, 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, 1, 1] [2024-11-05 14:00:48,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:00:48,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:48,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:48,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -166364019, now seen corresponding path program 1 times [2024-11-05 14:00:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916680983] [2024-11-05 14:00:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:48,645 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:48,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:48,646 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:48,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:00:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:48,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:00:48,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:48,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:49,112 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916680983] [2024-11-05 14:00:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [916680983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:49,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-05 14:00:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327094648] [2024-11-05 14:00:49,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:49,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 14:00:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 14:00:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:00:49,114 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:00:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:49,333 INFO L93 Difference]: Finished difference Result 163 states and 199 transitions. [2024-11-05 14:00:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:00:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2024-11-05 14:00:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:49,339 INFO L225 Difference]: With dead ends: 163 [2024-11-05 14:00:49,339 INFO L226 Difference]: Without dead ends: 118 [2024-11-05 14:00:49,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:00:49,340 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 40 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:49,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 371 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:00:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-05 14:00:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2024-11-05 14:00:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 80 states have (on average 1.175) internal successors, (94), 82 states have internal predecessors, (94), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-05 14:00:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2024-11-05 14:00:49,362 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 76 [2024-11-05 14:00:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:49,363 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2024-11-05 14:00:49,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:00:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2024-11-05 14:00:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 14:00:49,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:49,364 INFO L215 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:49,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 14:00:49,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:49,569 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:49,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash -820831667, now seen corresponding path program 1 times [2024-11-05 14:00:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544669172] [2024-11-05 14:00:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:49,570 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:49,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:49,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:49,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:00:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:49,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 14:00:49,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-05 14:00:49,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:50,098 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544669172] [2024-11-05 14:00:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544669172] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:50,098 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2024-11-05 14:00:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684575912] [2024-11-05 14:00:50,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:50,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 14:00:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 14:00:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-05 14:00:50,099 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-05 14:00:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:50,379 INFO L93 Difference]: Finished difference Result 217 states and 261 transitions. [2024-11-05 14:00:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:00:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 78 [2024-11-05 14:00:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:50,381 INFO L225 Difference]: With dead ends: 217 [2024-11-05 14:00:50,382 INFO L226 Difference]: Without dead ends: 117 [2024-11-05 14:00:50,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-05 14:00:50,383 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 46 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:50,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 499 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:00:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-05 14:00:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-05 14:00:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 87 states have internal predecessors, (99), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-05 14:00:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2024-11-05 14:00:50,408 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 78 [2024-11-05 14:00:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:50,408 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2024-11-05 14:00:50,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-05 14:00:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2024-11-05 14:00:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 14:00:50,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:50,410 INFO L215 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:50,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 14:00:50,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:50,610 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:50,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1254560753, now seen corresponding path program 1 times [2024-11-05 14:00:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:50,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426439544] [2024-11-05 14:00:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:50,611 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:50,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:50,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:50,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:00:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:50,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-05 14:00:50,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:52,318 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 14:00:52,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 111 [2024-11-05 14:00:52,669 INFO L224 Elim1Store]: Index analysis took 310 ms [2024-11-05 14:00:55,640 INFO L349 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2024-11-05 14:00:55,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 82 [2024-11-05 14:00:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 14:00:55,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 14:00:58,233 INFO L349 Elim1Store]: treesize reduction 65, result has 28.6 percent of original size [2024-11-05 14:00:58,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 135 treesize of output 240 [2024-11-05 14:01:02,136 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 14:01:02,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 115 [2024-11-05 14:01:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 14:01:02,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 14:01:03,437 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-05 14:01:03,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 136 [2024-11-05 14:01:03,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 365 treesize of output 307 [2024-11-05 14:01:03,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 111 [2024-11-05 14:01:03,723 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-05 14:01:03,741 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 [2024-11-05 14:01:05,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-05 14:01:06,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:06,313 INFO L224 Elim1Store]: Index analysis took 112 ms [2024-11-05 14:01:06,667 INFO L349 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2024-11-05 14:01:06,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 72 [2024-11-05 14:01:06,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2024-11-05 14:01:07,303 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:07,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 18 treesize of output 3 [2024-11-05 14:01:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 14:01:07,442 INFO L349 Elim1Store]: treesize reduction 104, result has 12.6 percent of original size [2024-11-05 14:01:07,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 357 treesize of output 305 [2024-11-05 14:01:07,452 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 5 treesize of output 3 [2024-11-05 14:01:07,456 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 5 treesize of output 3 [2024-11-05 14:01:07,491 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2024-11-05 14:01:07,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 148 [2024-11-05 14:01:07,507 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 5 treesize of output 3 [2024-11-05 14:01:07,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-05 14:01:08,564 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 5 treesize of output 3 [2024-11-05 14:01:09,170 INFO L349 Elim1Store]: treesize reduction 41, result has 43.1 percent of original size [2024-11-05 14:01:09,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 75 treesize of output 127 [2024-11-05 14:01:09,219 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 14:01:09,224 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 [2024-11-05 14:01:09,681 INFO L349 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2024-11-05 14:01:09,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 134 treesize of output 134 [2024-11-05 14:01:09,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 215 treesize of output 196 [2024-11-05 14:01:10,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-05 14:01:11,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 46 [2024-11-05 14:01:11,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2024-11-05 14:01:11,676 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2024-11-05 14:01:11,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 412 treesize of output 310 [2024-11-05 14:01:11,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2024-11-05 14:01:11,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 14:01:13,319 INFO L349 Elim1Store]: treesize reduction 41, result has 43.1 percent of original size [2024-11-05 14:01:13,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 94 treesize of output 146 [2024-11-05 14:01:13,360 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 14:01:13,366 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 [2024-11-05 14:01:13,774 INFO L349 Elim1Store]: treesize reduction 28, result has 26.3 percent of original size [2024-11-05 14:01:13,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2024-11-05 14:01:13,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2024-11-05 14:01:13,855 INFO L349 Elim1Store]: treesize reduction 45, result has 28.6 percent of original size [2024-11-05 14:01:13,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 81 treesize of output 86 [2024-11-05 14:01:13,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 41 [2024-11-05 14:01:13,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 80 treesize of output 88 [2024-11-05 14:01:13,937 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426439544] [2024-11-05 14:01:13,938 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-05 14:01:13,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 14:01:14,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:14,139 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:542) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:521) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:514) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:325) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-05 14:01:14,148 INFO L158 Benchmark]: Toolchain (without parser) took 35282.69ms. Allocated memory was 201.3MB in the beginning and 260.0MB in the end (delta: 58.7MB). Free memory was 153.7MB in the beginning and 192.5MB in the end (delta: -38.8MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,148 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-05 14:01:14,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2040.71ms. Allocated memory was 201.3MB in the beginning and 260.0MB in the end (delta: 58.7MB). Free memory was 153.3MB in the beginning and 198.1MB in the end (delta: -44.8MB). Peak memory consumption was 102.7MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.19ms. Allocated memory is still 260.0MB. Free memory was 197.6MB in the beginning and 191.8MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,149 INFO L158 Benchmark]: Boogie Preprocessor took 73.10ms. Allocated memory is still 260.0MB. Free memory was 191.8MB in the beginning and 186.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,149 INFO L158 Benchmark]: RCFGBuilder took 809.76ms. Allocated memory is still 260.0MB. Free memory was 186.0MB in the beginning and 151.9MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,149 INFO L158 Benchmark]: TraceAbstraction took 32214.69ms. Allocated memory is still 260.0MB. Free memory was 151.4MB in the beginning and 192.5MB in the end (delta: -41.0MB). Peak memory consumption was 78.0MB. Max. memory is 8.0GB. [2024-11-05 14:01:14,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2040.71ms. Allocated memory was 201.3MB in the beginning and 260.0MB in the end (delta: 58.7MB). Free memory was 153.3MB in the beginning and 198.1MB in the end (delta: -44.8MB). Peak memory consumption was 102.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 138.19ms. Allocated memory is still 260.0MB. Free memory was 197.6MB in the beginning and 191.8MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.10ms. Allocated memory is still 260.0MB. Free memory was 191.8MB in the beginning and 186.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 809.76ms. Allocated memory is still 260.0MB. Free memory was 186.0MB in the beginning and 151.9MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 32214.69ms. Allocated memory is still 260.0MB. Free memory was 151.4MB in the beginning and 192.5MB in the end (delta: -41.0MB). Peak memory consumption was 78.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-05 14:01:14,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...