/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_init_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 13:58:26,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 13:58:26,521 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 13:58:26,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 13:58:26,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 13:58:26,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 13:58:26,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 13:58:26,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 13:58:26,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 13:58:26,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 13:58:26,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 13:58:26,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 13:58:26,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 13:58:26,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 13:58:26,563 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 13:58:26,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 13:58:26,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 13:58:26,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 13:58:26,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 13:58:26,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 13:58:26,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 13:58:26,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 13:58:26,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 13:58:26,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 13:58:26,570 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 13:58:26,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 13:58:26,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 13:58:26,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 13:58:26,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 13:58:26,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 13:58:26,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 13:58:26,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:26,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 13:58:26,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 13:58:26,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 13:58:26,574 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 13:58:26,574 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 13:58:26,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 13:58:26,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 13:58:26,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 13:58:26,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 13:58:26,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 13:58:26,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 13:58:26,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 13:58:26,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 13:58:26,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 13:58:26,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 13:58:26,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i [2024-11-05 13:58:28,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 13:58:28,670 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 13:58:28,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_init_harness.i [2024-11-05 13:58:28,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58cafc08/4ae6f1b5691f47e1a2137b1aa32a1038/FLAG1d95e37a3 [2024-11-05 13:58:28,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f58cafc08/4ae6f1b5691f47e1a2137b1aa32a1038 [2024-11-05 13:58:28,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 13:58:28,722 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 13:58:28,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:28,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 13:58:28,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 13:58:28,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:28" (1/1) ... [2024-11-05 13:58:28,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76857e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:28, skipping insertion in model container [2024-11-05 13:58:28,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:28" (1/1) ... [2024-11-05 13:58:28,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:29,091 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_init_harness.i[4494,4507] [2024-11-05 13:58:29,101 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_init_harness.i[4554,4567] [2024-11-05 13:58:29,807 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 13:58:29,926 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 13:58:29,928 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 13:58:29,929 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 13:58:29,944 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 13:58:29,950 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,951 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,955 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,956 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 13:58:29,956 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,957 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,964 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:29,964 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:29,966 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:29,967 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 13:58:29,974 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,975 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 13:58:29,975 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,975 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 13:58:29,977 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:29,978 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,978 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 13:58:29,979 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,980 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:29,980 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,981 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 13:58:29,985 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:29,985 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,242 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 13:58:30,243 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 13:58:30,243 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 13:58:30,244 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 13:58:30,342 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 13:58:30,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:30,383 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 13:58:30,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:30,429 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_init_harness.i[4494,4507] [2024-11-05 13:58:30,430 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_init_harness.i[4554,4567] [2024-11-05 13:58:30,460 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 13:58:30,475 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 13:58:30,476 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,476 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,480 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 13:58:30,482 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,482 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,482 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,483 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,483 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,483 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,485 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,485 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,487 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 13:58:30,487 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 13:58:30,499 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,499 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 13:58:30,499 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,500 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 13:58:30,500 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,501 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 13:58:30,501 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,506 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,507 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,507 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 13:58:30,507 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,508 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 13:58:30,508 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,512 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,592 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 13:58:30,592 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 13:58:30,593 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 13:58:30,594 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:30,624 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 13:58:30,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:30,643 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 13:58:30,661 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_init_harness.i[4494,4507] [2024-11-05 13:58:30,661 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_init_harness.i[4554,4567] [2024-11-05 13:58:30,711 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,712 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,713 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,713 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,713 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,722 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,722 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,723 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,726 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,726 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,727 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,727 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,727 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:30,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:30,970 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 13:58:30,982 INFO L204 MainTranslator]: Completed translation [2024-11-05 13:58:30,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30 WrapperNode [2024-11-05 13:58:30,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:30,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:30,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 13:58:30,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 13:58:30,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,123 INFO L138 Inliner]: procedures = 687, calls = 1034, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 93 [2024-11-05 13:58:31,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:31,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 13:58:31,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 13:58:31,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 13:58:31,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,182 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 4 writes are split as follows [0, 4, 0]. [2024-11-05 13:58:31,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 13:58:31,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 13:58:31,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 13:58:31,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 13:58:31,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (1/1) ... [2024-11-05 13:58:31,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:31,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 13:58:31,267 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 13:58:31,273 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 13:58:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2024-11-05 13:58:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2024-11-05 13:58:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 13:58:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 13:58:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 13:58:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 13:58:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 13:58:31,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 13:58:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:31,296 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 13:58:31,297 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 13:58:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 13:58:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 13:58:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 13:58:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 13:58:31,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 13:58:31,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 13:58:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 13:58:31,299 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 13:58:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 13:58:31,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 13:58:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 13:58:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 13:58:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 13:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 13:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 13:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 13:58:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 13:58:31,582 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 13:58:31,584 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 13:58:31,808 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-05 13:58:31,808 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 13:58:31,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 13:58:31,823 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 13:58:31,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:31 BoogieIcfgContainer [2024-11-05 13:58:31,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 13:58:31,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 13:58:31,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 13:58:31,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 13:58:31,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:58:28" (1/3) ... [2024-11-05 13:58:31,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9e83b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:31, skipping insertion in model container [2024-11-05 13:58:31,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:30" (2/3) ... [2024-11-05 13:58:31,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9e83b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:31, skipping insertion in model container [2024-11-05 13:58:31,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:31" (3/3) ... [2024-11-05 13:58:31,832 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2024-11-05 13:58:31,847 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 13:58:31,847 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 13:58:31,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 13:58:31,915 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;@5175fdd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 13:58:31,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 13:58:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-05 13:58:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:31,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:31,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:31,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:31,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1017333715, now seen corresponding path program 1 times [2024-11-05 13:58:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636724686] [2024-11-05 13:58:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:31,939 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:31,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,943 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 13:58:31,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 13:58:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:32,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:32,185 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636724686] [2024-11-05 13:58:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [636724686] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:32,186 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:32,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 13:58:32,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214071167] [2024-11-05 13:58:32,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:32,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 13:58:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 13:58:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:58:32,216 INFO L87 Difference]: Start difference. First operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-05 13:58:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:32,238 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2024-11-05 13:58:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 13:58:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-05 13:58:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:32,247 INFO L225 Difference]: With dead ends: 117 [2024-11-05 13:58:32,247 INFO L226 Difference]: Without dead ends: 56 [2024-11-05 13:58:32,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 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 13:58:32,257 INFO L432 NwaCegarLoop]: 75 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, 75 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 13:58:32,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-05 13:58:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-05 13:58:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-05 13:58:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2024-11-05 13:58:32,305 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 26 [2024-11-05 13:58:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:32,305 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2024-11-05 13:58:32,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-05 13:58:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2024-11-05 13:58:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:32,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:32,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:32,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 13:58:32,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:32,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:32,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1834982165, now seen corresponding path program 1 times [2024-11-05 13:58:32,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594553490] [2024-11-05 13:58:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,514 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 13:58:32,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 13:58:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:32,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:32,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:34,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:34,664 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:34,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594553490] [2024-11-05 13:58:34,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [594553490] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:34,664 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:34,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 14 [2024-11-05 13:58:34,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933153015] [2024-11-05 13:58:34,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:34,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 13:58:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 13:58:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-05 13:58:34,669 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:35,622 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2024-11-05 13:58:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-05 13:58:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-05 13:58:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:35,626 INFO L225 Difference]: With dead ends: 114 [2024-11-05 13:58:35,628 INFO L226 Difference]: Without dead ends: 65 [2024-11-05 13:58:35,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-05 13:58:35,631 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 61 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:35,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 389 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-05 13:58:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-05 13:58:35,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-05 13:58:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 46 states have internal predecessors, (57), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-05 13:58:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-11-05 13:58:35,659 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 26 [2024-11-05 13:58:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:35,660 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-05 13:58:35,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-11-05 13:58:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:35,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:35,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:35,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 13:58:35,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:35,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:35,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1650638505, now seen corresponding path program 1 times [2024-11-05 13:58:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:35,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022579797] [2024-11-05 13:58:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:35,863 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:35,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:35,865 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 13:58:35,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 13:58:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:35,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-05 13:58:35,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:36,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:36,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:37,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:38,598 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022579797] [2024-11-05 13:58:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1022579797] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:38,598 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2024-11-05 13:58:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88696061] [2024-11-05 13:58:38,599 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:38,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-05 13:58:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-05 13:58:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-05 13:58:38,601 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 20 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:41,381 INFO L93 Difference]: Finished difference Result 122 states and 155 transitions. [2024-11-05 13:58:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 13:58:41,383 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-05 13:58:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:41,384 INFO L225 Difference]: With dead ends: 122 [2024-11-05 13:58:41,384 INFO L226 Difference]: Without dead ends: 70 [2024-11-05 13:58:41,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-11-05 13:58:41,386 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:41,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 619 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 13:58:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-05 13:58:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-11-05 13:58:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-05 13:58:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-11-05 13:58:41,403 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 26 [2024-11-05 13:58:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:41,403 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-11-05 13:58:41,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-11-05 13:58:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:41,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:41,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:41,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 13:58:41,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:41,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:41,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1257611495, now seen corresponding path program 1 times [2024-11-05 13:58:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:41,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512008479] [2024-11-05 13:58:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:41,607 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:41,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:41,613 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 13:58:41,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 13:58:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:41,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-05 13:58:41,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:41,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:41,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:42,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:42,995 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512008479] [2024-11-05 13:58:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1512008479] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:42,995 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 7] imperfect sequences [] total 16 [2024-11-05 13:58:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727182185] [2024-11-05 13:58:42,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:42,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 13:58:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 13:58:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-05 13:58:42,997 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:44,478 INFO L93 Difference]: Finished difference Result 142 states and 183 transitions. [2024-11-05 13:58:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 13:58:44,480 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-05 13:58:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:44,481 INFO L225 Difference]: With dead ends: 142 [2024-11-05 13:58:44,481 INFO L226 Difference]: Without dead ends: 87 [2024-11-05 13:58:44,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-05 13:58:44,483 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 104 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:44,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 587 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-05 13:58:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-05 13:58:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-11-05 13:58:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 60 states have internal predecessors, (79), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-05 13:58:44,504 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 26 [2024-11-05 13:58:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:44,504 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-05 13:58:44,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-05 13:58:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:44,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:44,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:44,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 13:58:44,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:44,706 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:44,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1515776933, now seen corresponding path program 1 times [2024-11-05 13:58:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718499108] [2024-11-05 13:58:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:44,707 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:44,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:44,709 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 13:58:44,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 13:58:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:44,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-05 13:58:44,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:44,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:44,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:45,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:45,924 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718499108] [2024-11-05 13:58:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [718499108] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:45,924 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2024-11-05 13:58:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106394764] [2024-11-05 13:58:45,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:45,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 13:58:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 13:58:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-05 13:58:45,926 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:47,090 INFO L93 Difference]: Finished difference Result 173 states and 232 transitions. [2024-11-05 13:58:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 13:58:47,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-11-05 13:58:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:47,092 INFO L225 Difference]: With dead ends: 173 [2024-11-05 13:58:47,092 INFO L226 Difference]: Without dead ends: 106 [2024-11-05 13:58:47,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2024-11-05 13:58:47,094 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 102 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:47,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 763 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-05 13:58:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-05 13:58:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2024-11-05 13:58:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 64 states have (on average 1.375) internal successors, (88), 66 states have internal predecessors, (88), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-11-05 13:58:47,119 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 26 [2024-11-05 13:58:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:47,119 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-11-05 13:58:47,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-05 13:58:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-11-05 13:58:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-05 13:58:47,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:47,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:47,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:47,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:47,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:47,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 504659683, now seen corresponding path program 1 times [2024-11-05 13:58:47,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:47,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269462647] [2024-11-05 13:58:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:47,323 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:47,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:47,324 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 13:58:47,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 13:58:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:47,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-05 13:58:47,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:47,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:47,663 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269462647] [2024-11-05 13:58:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [269462647] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:47,663 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:47,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2024-11-05 13:58:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818533974] [2024-11-05 13:58:47,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:47,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 13:58:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:47,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 13:58:47,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-05 13:58:47,665 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:58:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:47,812 INFO L93 Difference]: Finished difference Result 184 states and 251 transitions. [2024-11-05 13:58:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:58:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-05 13:58:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:47,815 INFO L225 Difference]: With dead ends: 184 [2024-11-05 13:58:47,815 INFO L226 Difference]: Without dead ends: 77 [2024-11-05 13:58:47,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-05 13:58:47,819 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 42 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:47,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 617 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-05 13:58:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-05 13:58:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 59 states have internal predecessors, (76), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2024-11-05 13:58:47,849 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 26 [2024-11-05 13:58:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:47,849 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2024-11-05 13:58:47,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:58:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2024-11-05 13:58:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 13:58:47,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:47,853 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:47,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 13:58:48,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:48,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:48,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1687611897, now seen corresponding path program 1 times [2024-11-05 13:58:48,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451165749] [2024-11-05 13:58:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:48,056 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:48,058 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 13:58:48,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 13:58:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:48,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 13:58:48,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:48,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:48,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451165749] [2024-11-05 13:58:48,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1451165749] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:48,259 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:48,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2024-11-05 13:58:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561915871] [2024-11-05 13:58:48,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:48,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 13:58:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 13:58:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:48,261 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-05 13:58:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:48,417 INFO L93 Difference]: Finished difference Result 155 states and 197 transitions. [2024-11-05 13:58:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:58:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-05 13:58:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:48,419 INFO L225 Difference]: With dead ends: 155 [2024-11-05 13:58:48,419 INFO L226 Difference]: Without dead ends: 83 [2024-11-05 13:58:48,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-05 13:58:48,420 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 25 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:48,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 364 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-05 13:58:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2024-11-05 13:58:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 59 states have internal predecessors, (74), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2024-11-05 13:58:48,444 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 28 [2024-11-05 13:58:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:48,444 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2024-11-05 13:58:48,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-05 13:58:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2024-11-05 13:58:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-05 13:58:48,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:48,447 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:48,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:48,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:48,648 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:48,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:48,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1850407916, now seen corresponding path program 1 times [2024-11-05 13:58:48,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:48,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400340896] [2024-11-05 13:58:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:48,649 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:48,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:48,650 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 13:58:48,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 13:58:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:48,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-05 13:58:48,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:48,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:48,965 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400340896] [2024-11-05 13:58:48,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [400340896] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:48,965 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:48,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2024-11-05 13:58:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071321820] [2024-11-05 13:58:48,965 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:48,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 13:58:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:48,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 13:58:48,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-05 13:58:48,966 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-05 13:58:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:49,162 INFO L93 Difference]: Finished difference Result 167 states and 213 transitions. [2024-11-05 13:58:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 13:58:49,162 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-05 13:58:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:49,163 INFO L225 Difference]: With dead ends: 167 [2024-11-05 13:58:49,163 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 13:58:49,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-05 13:58:49,164 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 45 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:49,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 399 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 13:58:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2024-11-05 13:58:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 61 states have internal predecessors, (76), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2024-11-05 13:58:49,190 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 30 [2024-11-05 13:58:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:49,190 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2024-11-05 13:58:49,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-05 13:58:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2024-11-05 13:58:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-05 13:58:49,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:49,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:49,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 13:58:49,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:49,394 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:49,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1395309347, now seen corresponding path program 1 times [2024-11-05 13:58:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:49,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513002292] [2024-11-05 13:58:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:49,395 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:49,396 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 13:58:49,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 13:58:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:49,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 13:58:49,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:49,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:49,556 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513002292] [2024-11-05 13:58:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [513002292] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:49,557 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 3] imperfect sequences [] total 9 [2024-11-05 13:58:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15432322] [2024-11-05 13:58:49,557 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:49,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-05 13:58:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-05 13:58:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:49,558 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:58:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:49,729 INFO L93 Difference]: Finished difference Result 161 states and 207 transitions. [2024-11-05 13:58:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:58:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-05 13:58:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:49,731 INFO L225 Difference]: With dead ends: 161 [2024-11-05 13:58:49,731 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 13:58:49,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:49,733 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:49,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 341 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 13:58:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2024-11-05 13:58:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-05 13:58:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2024-11-05 13:58:49,760 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 31 [2024-11-05 13:58:49,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:49,761 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2024-11-05 13:58:49,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:58:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2024-11-05 13:58:49,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 13:58:49,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:49,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:49,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 13:58:49,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:49,963 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:49,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1854431003, now seen corresponding path program 1 times [2024-11-05 13:58:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773826529] [2024-11-05 13:58:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:49,964 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:49,965 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 13:58:49,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 13:58:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:50,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-05 13:58:50,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:50,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:50,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:51,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:53,482 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:53,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773826529] [2024-11-05 13:58:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1773826529] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:53,482 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 11] imperfect sequences [] total 24 [2024-11-05 13:58:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187089210] [2024-11-05 13:58:53,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:53,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 13:58:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 13:58:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-11-05 13:58:53,484 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-05 13:58:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:56,088 INFO L93 Difference]: Finished difference Result 174 states and 221 transitions. [2024-11-05 13:58:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-05 13:58:56,090 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 39 [2024-11-05 13:58:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:56,091 INFO L225 Difference]: With dead ends: 174 [2024-11-05 13:58:56,091 INFO L226 Difference]: Without dead ends: 104 [2024-11-05 13:58:56,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-05 13:58:56,092 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 76 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:56,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 646 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-05 13:58:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-05 13:58:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2024-11-05 13:58:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.28125) internal successors, (82), 67 states have internal predecessors, (82), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-05 13:58:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2024-11-05 13:58:56,115 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 39 [2024-11-05 13:58:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:56,115 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2024-11-05 13:58:56,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 8 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-05 13:58:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2024-11-05 13:58:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 13:58:56,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:56,116 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:56,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:56,316 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1596265565, now seen corresponding path program 1 times [2024-11-05 13:58:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652228161] [2024-11-05 13:58:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:56,317 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:56,319 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 13:58:56,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 13:58:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:56,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-05 13:58:56,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:56,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:56,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:58:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:58,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:58:58,998 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652228161] [2024-11-05 13:58:58,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1652228161] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:58,998 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:58,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 11] imperfect sequences [] total 26 [2024-11-05 13:58:58,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272005333] [2024-11-05 13:58:58,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:58,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 13:58:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 13:58:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-05 13:58:59,000 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 26 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-05 13:59:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:01,134 INFO L93 Difference]: Finished difference Result 190 states and 254 transitions. [2024-11-05 13:59:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-05 13:59:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2024-11-05 13:59:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:01,136 INFO L225 Difference]: With dead ends: 190 [2024-11-05 13:59:01,136 INFO L226 Difference]: Without dead ends: 115 [2024-11-05 13:59:01,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 13:59:01,137 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 92 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:01,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 601 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 13:59:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-05 13:59:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2024-11-05 13:59:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 79 states have internal predecessors, (95), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) [2024-11-05 13:59:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-05 13:59:01,178 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 39 [2024-11-05 13:59:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:01,179 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-05 13:59:01,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-05 13:59:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-05 13:59:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 13:59:01,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:01,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:01,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:01,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:01,380 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:01,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1687584481, now seen corresponding path program 1 times [2024-11-05 13:59:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213121821] [2024-11-05 13:59:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:01,381 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:01,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:01,382 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 13:59:01,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 13:59:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:01,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-05 13:59:01,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:01,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:02,091 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213121821] [2024-11-05 13:59:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [213121821] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:02,091 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 18 [2024-11-05 13:59:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917356754] [2024-11-05 13:59:02,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:02,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 13:59:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 13:59:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-05 13:59:02,092 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 18 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-05 13:59:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:02,540 INFO L93 Difference]: Finished difference Result 224 states and 307 transitions. [2024-11-05 13:59:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-05 13:59:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2024-11-05 13:59:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:02,541 INFO L225 Difference]: With dead ends: 224 [2024-11-05 13:59:02,541 INFO L226 Difference]: Without dead ends: 104 [2024-11-05 13:59:02,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-05 13:59:02,543 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 49 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:02,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 781 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 13:59:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-05 13:59:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-05 13:59:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 74 states have internal predecessors, (89), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (15), 11 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 13:59:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2024-11-05 13:59:02,577 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 39 [2024-11-05 13:59:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:02,577 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2024-11-05 13:59:02,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-05 13:59:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2024-11-05 13:59:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-05 13:59:02,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:02,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:02,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 13:59:02,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:02,781 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:02,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1045188466, now seen corresponding path program 1 times [2024-11-05 13:59:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498657865] [2024-11-05 13:59:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:02,782 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:02,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:02,783 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 13:59:02,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 13:59:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:02,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-05 13:59:02,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:02,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:02,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:04,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:04,555 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498657865] [2024-11-05 13:59:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [498657865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:04,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:04,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2024-11-05 13:59:04,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809401884] [2024-11-05 13:59:04,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:04,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-05 13:59:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:04,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-05 13:59:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-05 13:59:04,557 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-05 13:59:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:06,605 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2024-11-05 13:59:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-05 13:59:06,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-05 13:59:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:06,607 INFO L225 Difference]: With dead ends: 203 [2024-11-05 13:59:06,607 INFO L226 Difference]: Without dead ends: 121 [2024-11-05 13:59:06,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-05 13:59:06,608 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 101 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:06,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 609 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 13:59:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-05 13:59:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2024-11-05 13:59:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.273972602739726) internal successors, (93), 76 states have internal predecessors, (93), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 13:59:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2024-11-05 13:59:06,648 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 41 [2024-11-05 13:59:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:06,648 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2024-11-05 13:59:06,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 19 states have internal predecessors, (56), 7 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-05 13:59:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2024-11-05 13:59:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 13:59:06,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:06,649 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 13:59:06,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-05 13:59:06,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:06,850 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:06,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash 964483973, now seen corresponding path program 1 times [2024-11-05 13:59:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:06,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425708546] [2024-11-05 13:59:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:06,850 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:06,852 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 13:59:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 13:59:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:06,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:59:06,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-05 13:59:06,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-05 13:59:07,072 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425708546] [2024-11-05 13:59:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [425708546] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:07,073 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:07,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2024-11-05 13:59:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038491206] [2024-11-05 13:59:07,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:07,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 13:59:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 13:59:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-05 13:59:07,074 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-05 13:59:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:07,188 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2024-11-05 13:59:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:59:07,188 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-05 13:59:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:07,189 INFO L225 Difference]: With dead ends: 112 [2024-11-05 13:59:07,190 INFO L226 Difference]: Without dead ends: 110 [2024-11-05 13:59:07,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-05 13:59:07,190 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:07,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 700 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:59:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-05 13:59:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-11-05 13:59:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 83 states have internal predecessors, (99), 14 states have call successors, (14), 8 states have call predecessors, (14), 11 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-05 13:59:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2024-11-05 13:59:07,232 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 42 [2024-11-05 13:59:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:07,232 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2024-11-05 13:59:07,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-05 13:59:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2024-11-05 13:59:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-05 13:59:07,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:07,233 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:07,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:07,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:07,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:07,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1440497479, now seen corresponding path program 1 times [2024-11-05 13:59:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463483716] [2024-11-05 13:59:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:07,435 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 13:59:07,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 13:59:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:07,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-05 13:59:07,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:07,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:07,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 13:59:09,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 13:59:09,809 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463483716] [2024-11-05 13:59:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1463483716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:09,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-05 13:59:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831371211] [2024-11-05 13:59:09,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:09,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 13:59:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 13:59:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-05 13:59:09,811 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-05 13:59:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:11,087 INFO L93 Difference]: Finished difference Result 224 states and 286 transitions. [2024-11-05 13:59:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-05 13:59:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 50 [2024-11-05 13:59:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:11,089 INFO L225 Difference]: With dead ends: 224 [2024-11-05 13:59:11,089 INFO L226 Difference]: Without dead ends: 130 [2024-11-05 13:59:11,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-05 13:59:11,090 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 81 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:11,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 510 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-05 13:59:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-05 13:59:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2024-11-05 13:59:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 77 states have internal predecessors, (92), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 13:59:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2024-11-05 13:59:11,130 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 50 [2024-11-05 13:59:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:11,131 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2024-11-05 13:59:11,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 17 states have internal predecessors, (61), 10 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-05 13:59:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2024-11-05 13:59:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-05 13:59:11,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:11,132 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 13:59:11,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:11,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:11,334 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:11,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -41969126, now seen corresponding path program 1 times [2024-11-05 13:59:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613540472] [2024-11-05 13:59:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:11,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:11,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-05 13:59:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:11,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-05 13:59:11,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:11,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:11,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-05 13:59:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:13,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-05 13:59:14,626 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613540472] [2024-11-05 13:59:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613540472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:14,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2024-11-05 13:59:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455244407] [2024-11-05 13:59:14,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:14,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 13:59:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 13:59:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:59:14,629 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-05 13:59:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:17,216 INFO L93 Difference]: Finished difference Result 183 states and 232 transitions. [2024-11-05 13:59:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-05 13:59:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 58 [2024-11-05 13:59:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:17,218 INFO L225 Difference]: With dead ends: 183 [2024-11-05 13:59:17,218 INFO L226 Difference]: Without dead ends: 132 [2024-11-05 13:59:17,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2024-11-05 13:59:17,219 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:17,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 753 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 13:59:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-05 13:59:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2024-11-05 13:59:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 92 states have internal predecessors, (108), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 13:59:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-05 13:59:17,291 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 58 [2024-11-05 13:59:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:17,291 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-05 13:59:17,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.2) internal successors, (80), 23 states have internal predecessors, (80), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-05 13:59:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-05 13:59:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 13:59:17,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:17,292 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:17,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:17,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:17,493 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:17,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1239716043, now seen corresponding path program 1 times [2024-11-05 13:59:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331171583] [2024-11-05 13:59:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:17,494 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:17,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:17,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:17,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-05 13:59:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:17,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-05 13:59:17,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2024-11-05 13:59:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 13:59:17,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35