/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_swap_contents_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:01:17,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:01:17,634 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 14:01:17,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:01:17,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:01:17,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:01:17,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:01:17,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:01:17,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:01:17,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:01:17,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:01:17,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:01:17,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:01:17,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:01:17,666 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:01:17,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:01:17,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:01:17,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:01:17,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:01:17,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:01:17,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:01:17,669 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:01:17,669 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:01:17,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:01:17,669 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:01:17,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:01:17,670 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:01:17,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:01:17,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:01:17,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:01:17,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:01:17,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:01:17,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:01:17,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:01:17,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:01:17,672 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:01:17,673 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:01:17,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:01:17,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:01:17,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:01:17,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:01:17,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:01:17,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:01:17,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:01:17,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:01:17,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:01:17,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:01:17,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_swap_contents_harness.i [2024-11-05 14:01:19,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:01:19,729 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:01:19,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_swap_contents_harness.i [2024-11-05 14:01:19,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7350689f/d43188af09714ee29a995ae0fee64cb6/FLAGfe8090188 [2024-11-05 14:01:19,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7350689f/d43188af09714ee29a995ae0fee64cb6 [2024-11-05 14:01:19,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:01:19,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:01:19,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:01:19,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:01:19,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:01:19,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:01:19" (1/1) ... [2024-11-05 14:01:19,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f24349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:19, skipping insertion in model container [2024-11-05 14:01:19,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:01:19" (1/1) ... [2024-11-05 14:01:19,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:01:20,163 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_swap_contents_harness.i[4503,4516] [2024-11-05 14:01:20,172 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_swap_contents_harness.i[4563,4576] [2024-11-05 14:01:20,720 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 14:01:20,814 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 14:01:20,814 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 14:01:20,815 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 14:01:20,823 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 14:01:20,825 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,826 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,826 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,827 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 14:01:20,827 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,828 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,830 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 14:01:20,831 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 14:01:20,834 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 14:01:20,835 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 14:01:20,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,846 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 14:01:20,846 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,847 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 14:01:20,848 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,849 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 14:01:20,849 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,849 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 14:01:20,851 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,852 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 14:01:20,853 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,853 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 14:01:20,853 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:20,854 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,204 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 14:01:21,205 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 14:01:21,210 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 14:01:21,210 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 14:01:21,371 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 14:01:21,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:21,410 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 14:01:21,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:01:21,450 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_swap_contents_harness.i[4503,4516] [2024-11-05 14:01:21,451 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_swap_contents_harness.i[4563,4576] [2024-11-05 14:01:21,479 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 14:01:21,496 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 14:01:21,498 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 14:01:21,499 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 14:01:21,507 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:21,508 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,508 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,509 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,513 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 14:01:21,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,516 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 14:01:21,516 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 14:01:21,517 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 14:01:21,517 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 14:01:21,525 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,525 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 14:01:21,526 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,527 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 14:01:21,528 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,528 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 14:01:21,529 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,529 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 14:01:21,530 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,530 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 14:01:21,530 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,531 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 14:01:21,531 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,533 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,591 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 14:01:21,592 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 14:01:21,592 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 14:01:21,592 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 14:01:21,628 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 14:01:21,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:21,647 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:01:21,664 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_swap_contents_harness.i[4503,4516] [2024-11-05 14:01:21,665 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_swap_contents_harness.i[4563,4576] [2024-11-05 14:01:21,744 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,745 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,745 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,745 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,746 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,751 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,752 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,753 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,753 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,754 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,756 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,757 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,757 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:21,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:22,001 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 14:01:22,012 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:01:22,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22 WrapperNode [2024-11-05 14:01:22,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:01:22,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:01:22,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:01:22,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:01:22,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,142 INFO L138 Inliner]: procedures = 687, calls = 1078, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 214 [2024-11-05 14:01:22,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:01:22,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:01:22,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:01:22,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:01:22,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,211 INFO L175 MemorySlicer]: Split 68 memory accesses to 5 slices as follows [47, 2, 5, 7, 7]. 69 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [0, 2, 5, 4, 4]. The 18 writes are split as follows [18, 0, 0, 0, 0]. [2024-11-05 14:01:22,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:01:22,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:01:22,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:01:22,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:01:22,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (1/1) ... [2024-11-05 14:01:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:01:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:01:22,309 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 14:01:22,315 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 14:01:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2024-11-05 14:01:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2024-11-05 14:01:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:01:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 14:01:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:01:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:01:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2024-11-05 14:01:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 14:01:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:01:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:01:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 14:01:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:01:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-05 14:01:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-05 14:01:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 14:01:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 14:01:22,660 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:01:22,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:01:23,485 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-05 14:01:23,485 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:01:23,504 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:01:23,504 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 14:01:23,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:01:23 BoogieIcfgContainer [2024-11-05 14:01:23,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:01:23,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:01:23,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:01:23,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:01:23,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:01:19" (1/3) ... [2024-11-05 14:01:23,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41480ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:01:23, skipping insertion in model container [2024-11-05 14:01:23,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:22" (2/3) ... [2024-11-05 14:01:23,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41480ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:01:23, skipping insertion in model container [2024-11-05 14:01:23,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:01:23" (3/3) ... [2024-11-05 14:01:23,514 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2024-11-05 14:01:23,530 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:01:23,530 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:01:23,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:01:23,637 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;@6819180d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:01:23,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:01:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 70 states have (on average 1.3) internal successors, (91), 73 states have internal predecessors, (91), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-05 14:01:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-05 14:01:23,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:23,657 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:23,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:23,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 408503669, now seen corresponding path program 1 times [2024-11-05 14:01:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738457992] [2024-11-05 14:01:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:23,675 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:23,677 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 14:01:23,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:01:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:23,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:01:23,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-05 14:01:24,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-05 14:01:24,170 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738457992] [2024-11-05 14:01:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1738457992] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:01:24,171 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:01:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:01:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436434197] [2024-11-05 14:01:24,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:24,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:01:24,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:01:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:01:24,199 INFO L87 Difference]: Start difference. First operand has 114 states, 70 states have (on average 1.3) internal successors, (91), 73 states have internal predecessors, (91), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:24,249 INFO L93 Difference]: Finished difference Result 225 states and 346 transitions. [2024-11-05 14:01:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:01:24,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2024-11-05 14:01:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:24,258 INFO L225 Difference]: With dead ends: 225 [2024-11-05 14:01:24,258 INFO L226 Difference]: Without dead ends: 107 [2024-11-05 14:01:24,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 200 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 14:01:24,265 INFO L432 NwaCegarLoop]: 155 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, 155 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 14:01:24,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-05 14:01:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-05 14:01:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.265625) internal successors, (81), 68 states have internal predecessors, (81), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-05 14:01:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2024-11-05 14:01:24,312 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 101 [2024-11-05 14:01:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:24,313 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2024-11-05 14:01:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2024-11-05 14:01:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-05 14:01:24,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:24,319 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:24,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:24,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:24,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:24,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 34190191, now seen corresponding path program 1 times [2024-11-05 14:01:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509959478] [2024-11-05 14:01:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:24,522 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:24,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:24,523 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 14:01:24,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:01:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:24,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 14:01:24,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-05 14:01:24,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:24,936 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509959478] [2024-11-05 14:01:24,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1509959478] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:24,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:24,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 14:01:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075743292] [2024-11-05 14:01:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:24,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:01:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:01:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:01:24,941 INFO L87 Difference]: Start difference. First operand 107 states and 147 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:24,995 INFO L93 Difference]: Finished difference Result 198 states and 284 transitions. [2024-11-05 14:01:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:01:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2024-11-05 14:01:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:24,998 INFO L225 Difference]: With dead ends: 198 [2024-11-05 14:01:24,998 INFO L226 Difference]: Without dead ends: 110 [2024-11-05 14:01:25,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:01:25,001 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:25,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 424 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-05 14:01:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2024-11-05 14:01:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-05 14:01:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 149 transitions. [2024-11-05 14:01:25,017 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 149 transitions. Word has length 101 [2024-11-05 14:01:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:25,019 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 149 transitions. [2024-11-05 14:01:25,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 149 transitions. [2024-11-05 14:01:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-05 14:01:25,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:25,022 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:25,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:01:25,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:25,223 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:25,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash 742326057, now seen corresponding path program 1 times [2024-11-05 14:01:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:25,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958048325] [2024-11-05 14:01:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:25,225 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 14:01:25,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:01:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:25,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:01:25,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-05 14:01:25,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:25,574 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:25,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958048325] [2024-11-05 14:01:25,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958048325] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:25,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:25,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-05 14:01:25,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030046429] [2024-11-05 14:01:25,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:25,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 14:01:25,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 14:01:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-05 14:01:25,577 INFO L87 Difference]: Start difference. First operand 109 states and 149 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:25,632 INFO L93 Difference]: Finished difference Result 202 states and 288 transitions. [2024-11-05 14:01:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 14:01:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2024-11-05 14:01:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:25,634 INFO L225 Difference]: With dead ends: 202 [2024-11-05 14:01:25,634 INFO L226 Difference]: Without dead ends: 112 [2024-11-05 14:01:25,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-05 14:01:25,638 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 1 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:25,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 557 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-05 14:01:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-11-05 14:01:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.25) internal successors, (85), 72 states have internal predecessors, (85), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-05 14:01:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 151 transitions. [2024-11-05 14:01:25,685 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 151 transitions. Word has length 101 [2024-11-05 14:01:25,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:25,687 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 151 transitions. [2024-11-05 14:01:25,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 151 transitions. [2024-11-05 14:01:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-05 14:01:25,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:25,691 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:25,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 14:01:25,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:25,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:25,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -588779165, now seen corresponding path program 1 times [2024-11-05 14:01:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:25,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880560054] [2024-11-05 14:01:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:25,896 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 14:01:25,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:01:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:26,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:26,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-05 14:01:26,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:26,272 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880560054] [2024-11-05 14:01:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [880560054] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:26,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-11-05 14:01:26,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725613647] [2024-11-05 14:01:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:26,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:26,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:01:26,275 INFO L87 Difference]: Start difference. First operand 111 states and 151 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:26,341 INFO L93 Difference]: Finished difference Result 206 states and 293 transitions. [2024-11-05 14:01:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2024-11-05 14:01:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:26,346 INFO L225 Difference]: With dead ends: 206 [2024-11-05 14:01:26,346 INFO L226 Difference]: Without dead ends: 114 [2024-11-05 14:01:26,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:01:26,348 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:26,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 690 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-05 14:01:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-05 14:01:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 75 states have internal predecessors, (88), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-05 14:01:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2024-11-05 14:01:26,360 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 101 [2024-11-05 14:01:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:26,360 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2024-11-05 14:01:26,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 14:01:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2024-11-05 14:01:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-05 14:01:26,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:26,363 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:26,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 14:01:26,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:26,566 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:26,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1908156957, now seen corresponding path program 1 times [2024-11-05 14:01:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563885779] [2024-11-05 14:01:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:26,567 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:26,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:26,568 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 14:01:26,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:01:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:26,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:26,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-05 14:01:26,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-05 14:01:26,977 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563885779] [2024-11-05 14:01:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1563885779] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084035136] [2024-11-05 14:01:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:26,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:26,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:26,979 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:27,058 INFO L93 Difference]: Finished difference Result 211 states and 293 transitions. [2024-11-05 14:01:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2024-11-05 14:01:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:27,062 INFO L225 Difference]: With dead ends: 211 [2024-11-05 14:01:27,062 INFO L226 Difference]: Without dead ends: 116 [2024-11-05 14:01:27,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:27,063 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:27,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-05 14:01:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-05 14:01:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 77 states have internal predecessors, (89), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 161 transitions. [2024-11-05 14:01:27,075 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 161 transitions. Word has length 101 [2024-11-05 14:01:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:27,075 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 161 transitions. [2024-11-05 14:01:27,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 161 transitions. [2024-11-05 14:01:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-05 14:01:27,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:27,077 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:27,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:27,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:27,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:27,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1287961567, now seen corresponding path program 1 times [2024-11-05 14:01:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:27,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894004507] [2024-11-05 14:01:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:27,279 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:27,280 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 14:01:27,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:01:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:27,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:27,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-05 14:01:27,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-05 14:01:27,655 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894004507] [2024-11-05 14:01:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [894004507] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457505391] [2024-11-05 14:01:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:27,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:27,657 INFO L87 Difference]: Start difference. First operand 116 states and 161 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:27,750 INFO L93 Difference]: Finished difference Result 216 states and 308 transitions. [2024-11-05 14:01:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2024-11-05 14:01:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:27,752 INFO L225 Difference]: With dead ends: 216 [2024-11-05 14:01:27,753 INFO L226 Difference]: Without dead ends: 119 [2024-11-05 14:01:27,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:27,754 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:27,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 819 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-05 14:01:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2024-11-05 14:01:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 78 states have internal predecessors, (90), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2024-11-05 14:01:27,765 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 103 [2024-11-05 14:01:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:27,765 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2024-11-05 14:01:27,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2024-11-05 14:01:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-05 14:01:27,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:27,771 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:27,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:27,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:27,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:27,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash -27285746, now seen corresponding path program 1 times [2024-11-05 14:01:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8315270] [2024-11-05 14:01:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:27,977 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:27,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:27,979 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 14:01:27,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:01:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:28,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:28,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-05 14:01:28,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-05 14:01:28,410 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8315270] [2024-11-05 14:01:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [8315270] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:28,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:28,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633733033] [2024-11-05 14:01:28,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:28,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:28,412 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:28,520 INFO L93 Difference]: Finished difference Result 220 states and 312 transitions. [2024-11-05 14:01:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2024-11-05 14:01:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:28,523 INFO L225 Difference]: With dead ends: 220 [2024-11-05 14:01:28,523 INFO L226 Difference]: Without dead ends: 122 [2024-11-05 14:01:28,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:28,525 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 4 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:28,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 944 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-05 14:01:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2024-11-05 14:01:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 79 states have internal predecessors, (91), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 163 transitions. [2024-11-05 14:01:28,548 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 163 transitions. Word has length 105 [2024-11-05 14:01:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:28,548 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 163 transitions. [2024-11-05 14:01:28,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 163 transitions. [2024-11-05 14:01:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-05 14:01:28,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:28,551 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:28,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:01:28,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:28,752 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:28,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 151910260, now seen corresponding path program 1 times [2024-11-05 14:01:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:28,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175387911] [2024-11-05 14:01:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:28,753 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:28,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:28,754 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 14:01:28,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:01:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:28,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 14:01:28,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-05 14:01:29,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-05 14:01:29,146 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175387911] [2024-11-05 14:01:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [175387911] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 8 [2024-11-05 14:01:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342118542] [2024-11-05 14:01:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:29,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:29,149 INFO L87 Difference]: Start difference. First operand 118 states and 163 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-05 14:01:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:32,252 INFO L93 Difference]: Finished difference Result 231 states and 338 transitions. [2024-11-05 14:01:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 106 [2024-11-05 14:01:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:32,255 INFO L225 Difference]: With dead ends: 231 [2024-11-05 14:01:32,255 INFO L226 Difference]: Without dead ends: 132 [2024-11-05 14:01:32,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:32,256 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 44 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:32,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 554 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-05 14:01:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-05 14:01:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2024-11-05 14:01:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.236842105263158) internal successors, (94), 81 states have internal predecessors, (94), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2024-11-05 14:01:32,266 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 106 [2024-11-05 14:01:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:32,267 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2024-11-05 14:01:32,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-05 14:01:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2024-11-05 14:01:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-05 14:01:32,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:32,268 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:32,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 14:01:32,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:32,469 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:32,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1748388575, now seen corresponding path program 1 times [2024-11-05 14:01:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:32,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337215795] [2024-11-05 14:01:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:32,470 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:32,472 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 14:01:32,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:01:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:32,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 14:01:32,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-05 14:01:32,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-05 14:01:32,804 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:32,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337215795] [2024-11-05 14:01:32,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [337215795] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:32,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:32,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 14:01:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744391310] [2024-11-05 14:01:32,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:32,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:01:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:01:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:01:32,806 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:32,830 INFO L93 Difference]: Finished difference Result 224 states and 329 transitions. [2024-11-05 14:01:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:01:32,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2024-11-05 14:01:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:32,833 INFO L225 Difference]: With dead ends: 224 [2024-11-05 14:01:32,833 INFO L226 Difference]: Without dead ends: 123 [2024-11-05 14:01:32,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:01:32,834 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 1 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 428 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 14:01:32,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 428 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-05 14:01:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2024-11-05 14:01:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 83 states have internal predecessors, (96), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2024-11-05 14:01:32,847 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 117 [2024-11-05 14:01:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:32,847 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2024-11-05 14:01:32,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2024-11-05 14:01:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-05 14:01:32,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:32,849 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:32,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:33,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:33,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:33,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2129182115, now seen corresponding path program 1 times [2024-11-05 14:01:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201530872] [2024-11-05 14:01:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:33,051 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:33,052 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 14:01:33,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:01:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:33,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:33,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-05 14:01:33,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-05 14:01:33,489 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:33,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201530872] [2024-11-05 14:01:33,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1201530872] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:33,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:33,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-11-05 14:01:33,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434876744] [2024-11-05 14:01:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:33,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:01:33,491 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:33,532 INFO L93 Difference]: Finished difference Result 229 states and 333 transitions. [2024-11-05 14:01:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2024-11-05 14:01:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:33,536 INFO L225 Difference]: With dead ends: 229 [2024-11-05 14:01:33,536 INFO L226 Difference]: Without dead ends: 126 [2024-11-05 14:01:33,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:01:33,537 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:33,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 708 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-05 14:01:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-05 14:01:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 86 states have internal predecessors, (99), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (39), 33 states have call predecessors, (39), 32 states have call successors, (39) [2024-11-05 14:01:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2024-11-05 14:01:33,549 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 117 [2024-11-05 14:01:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:33,549 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2024-11-05 14:01:33,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 14:01:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2024-11-05 14:01:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-05 14:01:33,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:33,552 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:33,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 14:01:33,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:33,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:33,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash -62208737, now seen corresponding path program 1 times [2024-11-05 14:01:33,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:33,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500569763] [2024-11-05 14:01:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:33,757 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:33,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:33,758 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:33,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:01:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:33,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:33,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-05 14:01:34,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-05 14:01:34,165 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:34,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500569763] [2024-11-05 14:01:34,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1500569763] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:34,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:34,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:34,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424998882] [2024-11-05 14:01:34,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:34,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:34,167 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:34,250 INFO L93 Difference]: Finished difference Result 232 states and 322 transitions. [2024-11-05 14:01:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2024-11-05 14:01:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:34,252 INFO L225 Difference]: With dead ends: 232 [2024-11-05 14:01:34,253 INFO L226 Difference]: Without dead ends: 128 [2024-11-05 14:01:34,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:34,254 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:34,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-05 14:01:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-05 14:01:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 88 states have internal predecessors, (100), 34 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (44), 33 states have call predecessors, (44), 32 states have call successors, (44) [2024-11-05 14:01:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 178 transitions. [2024-11-05 14:01:34,262 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 178 transitions. Word has length 117 [2024-11-05 14:01:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:34,263 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 178 transitions. [2024-11-05 14:01:34,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 178 transitions. [2024-11-05 14:01:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-05 14:01:34,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:34,264 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:34,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 14:01:34,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:34,465 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:34,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1548267805, now seen corresponding path program 1 times [2024-11-05 14:01:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682019836] [2024-11-05 14:01:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:34,466 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:34,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:34,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 14:01:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:34,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:34,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-05 14:01:34,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-05 14:01:34,900 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:34,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682019836] [2024-11-05 14:01:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [682019836] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:34,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291038733] [2024-11-05 14:01:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:34,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:34,902 INFO L87 Difference]: Start difference. First operand 128 states and 178 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:34,984 INFO L93 Difference]: Finished difference Result 237 states and 335 transitions. [2024-11-05 14:01:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:34,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 119 [2024-11-05 14:01:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:34,987 INFO L225 Difference]: With dead ends: 237 [2024-11-05 14:01:34,987 INFO L226 Difference]: Without dead ends: 131 [2024-11-05 14:01:34,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:34,988 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:34,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 819 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-05 14:01:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-11-05 14:01:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.216867469879518) internal successors, (101), 89 states have internal predecessors, (101), 34 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (44), 33 states have call predecessors, (44), 32 states have call successors, (44) [2024-11-05 14:01:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2024-11-05 14:01:35,003 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 119 [2024-11-05 14:01:35,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:35,004 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2024-11-05 14:01:35,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:35,004 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2024-11-05 14:01:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-05 14:01:35,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:35,005 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:35,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:35,209 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:35,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1650259504, now seen corresponding path program 1 times [2024-11-05 14:01:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690522029] [2024-11-05 14:01:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:35,210 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:35,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:35,211 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:35,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 14:01:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:35,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:35,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-05 14:01:35,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-05 14:01:35,658 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690522029] [2024-11-05 14:01:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1690522029] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795432537] [2024-11-05 14:01:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:35,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:35,660 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:35,787 INFO L93 Difference]: Finished difference Result 237 states and 330 transitions. [2024-11-05 14:01:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:35,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2024-11-05 14:01:35,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:35,790 INFO L225 Difference]: With dead ends: 237 [2024-11-05 14:01:35,790 INFO L226 Difference]: Without dead ends: 130 [2024-11-05 14:01:35,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:35,792 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 4 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:35,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 944 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-05 14:01:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2024-11-05 14:01:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 86 states have internal predecessors, (99), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-05 14:01:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2024-11-05 14:01:35,802 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 121 [2024-11-05 14:01:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:35,802 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2024-11-05 14:01:35,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2024-11-05 14:01:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-05 14:01:35,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:35,804 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:35,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:36,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:36,007 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:36,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1456075425, now seen corresponding path program 2 times [2024-11-05 14:01:36,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:36,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553479722] [2024-11-05 14:01:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:36,008 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:36,010 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:36,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 14:01:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:36,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-05 14:01:36,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-05 14:01:36,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-05 14:01:36,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553479722] [2024-11-05 14:01:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1553479722] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2024-11-05 14:01:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676057414] [2024-11-05 14:01:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:36,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-05 14:01:36,860 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:38,013 INFO L93 Difference]: Finished difference Result 224 states and 302 transitions. [2024-11-05 14:01:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:38,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2024-11-05 14:01:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:38,015 INFO L225 Difference]: With dead ends: 224 [2024-11-05 14:01:38,015 INFO L226 Difference]: Without dead ends: 139 [2024-11-05 14:01:38,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:01:38,016 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 22 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:38,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 486 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-05 14:01:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-05 14:01:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2024-11-05 14:01:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.206896551724138) internal successors, (105), 93 states have internal predecessors, (105), 34 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (41), 33 states have call predecessors, (41), 32 states have call successors, (41) [2024-11-05 14:01:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2024-11-05 14:01:38,026 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 133 [2024-11-05 14:01:38,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:38,027 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2024-11-05 14:01:38,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-05 14:01:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2024-11-05 14:01:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-05 14:01:38,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:38,030 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:38,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 14:01:38,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:38,234 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:38,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash -883566423, now seen corresponding path program 1 times [2024-11-05 14:01:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529838508] [2024-11-05 14:01:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:38,235 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:38,236 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:38,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 14:01:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:38,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-05 14:01:38,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:38,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-05 14:01:38,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-05 14:01:38,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:01:38,795 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 41 [2024-11-05 14:01:38,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2024-11-05 14:01:40,078 INFO L349 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2024-11-05 14:01:40,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 69 [2024-11-05 14:01:40,141 INFO L349 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2024-11-05 14:01:40,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 69 [2024-11-05 14:01:48,166 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-05 14:01:48,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 64 treesize of output 28 [2024-11-05 14:01:48,179 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-05 14:01:48,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 57 treesize of output 25 [2024-11-05 14:01:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 41 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-05 14:01:48,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-05 14:01:52,614 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529838508] [2024-11-05 14:01:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1529838508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:52,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 27 [2024-11-05 14:01:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294400155] [2024-11-05 14:01:52,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:52,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 14:01:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 14:01:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-05 14:01:52,616 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand has 27 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 13 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-05 14:01:58,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:00,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-05 14:02:08,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:10,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:16,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:17,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:22,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:28,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:34,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:39,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:50,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:53,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]