/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:00:32,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:00:32,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:00:32,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:00:32,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:00:32,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:00:32,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:00:32,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:00:32,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:00:32,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:00:32,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:00:32,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:00:32,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:00:32,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:00:32,637 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:00:32,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:00:32,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:00:32,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:00:32,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:00:32,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:00:32,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:00:32,642 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:00:32,643 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:00:32,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:00:32,643 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:00:32,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:00:32,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:00:32,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:00:32,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:00:32,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:00:32,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:00:32,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:32,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:00:32,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:00:32,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:00:32,646 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:00:32,646 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:00:32,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:00:32,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:00:32,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:00:32,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:00:32,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:00:32,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:00:32,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:00:32,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:00:32,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:00:32,911 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:00:32,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i [2024-11-05 14:00:34,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:00:34,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:00:34,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i [2024-11-05 14:00:34,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a98a8a5/a03da2b35729408caa2d1fd051ab2051/FLAGa5c60cbc5 [2024-11-05 14:00:34,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a98a8a5/a03da2b35729408caa2d1fd051ab2051 [2024-11-05 14:00:34,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:00:34,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:00:34,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:34,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:00:34,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:00:34,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:34" (1/1) ... [2024-11-05 14:00:34,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5565907d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:34, skipping insertion in model container [2024-11-05 14:00:34,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:34" (1/1) ... [2024-11-05 14:00:34,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:35,231 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2024-11-05 14:00:35,240 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2024-11-05 14:00:35,932 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,036 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,037 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,038 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,046 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,049 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,049 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,050 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,050 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,050 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,051 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,054 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,055 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,057 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,057 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,065 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,066 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,066 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,066 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,068 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,068 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,069 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,069 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,071 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,071 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,072 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,072 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,072 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,073 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,398 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,400 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,562 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:36,612 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 14:00:36,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:36,658 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2024-11-05 14:00:36,658 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2024-11-05 14:00:36,690 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,706 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,707 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,707 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,712 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,713 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,714 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,714 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,715 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,715 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,716 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,718 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,718 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,720 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,720 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,725 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,726 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,728 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,729 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,730 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,730 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,732 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,732 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,734 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,736 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,737 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,737 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,738 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,738 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,809 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,810 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,811 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,811 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,848 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:36,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:36,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:00:36,883 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2024-11-05 14:00:36,884 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2024-11-05 14:00:36,919 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,919 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,920 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,921 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,922 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,928 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,931 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,932 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,932 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,933 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,934 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,934 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:36,934 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:37,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:37,177 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 14:00:37,187 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:00:37,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37 WrapperNode [2024-11-05 14:00:37,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:37,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:37,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:00:37,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:00:37,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,301 INFO L138 Inliner]: procedures = 687, calls = 1048, calls flagged for inlining = 49, calls inlined = 4, statements flattened = 88 [2024-11-05 14:00:37,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:37,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:00:37,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:00:37,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:00:37,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,340 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 5, 23]. 77 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 7 writes are split as follows [0, 0, 7]. [2024-11-05 14:00:37,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:00:37,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:00:37,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:00:37,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:00:37,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (1/1) ... [2024-11-05 14:00:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:00:37,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 14:00:37,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 14:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-05 14:00:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-05 14:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-05 14:00:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-05 14:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 14:00:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 14:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:00:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-05 14:00:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-05 14:00:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-05 14:00:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:00:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 14:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 14:00:37,466 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 14:00:37,761 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:00:37,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:00:38,259 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-05 14:00:38,259 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:00:38,275 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:00:38,275 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-05 14:00:38,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:38 BoogieIcfgContainer [2024-11-05 14:00:38,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:00:38,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:00:38,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:00:38,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:00:38,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:00:34" (1/3) ... [2024-11-05 14:00:38,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b95bb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:38, skipping insertion in model container [2024-11-05 14:00:38,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:37" (2/3) ... [2024-11-05 14:00:38,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b95bb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:38, skipping insertion in model container [2024-11-05 14:00:38,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:38" (3/3) ... [2024-11-05 14:00:38,286 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness.i [2024-11-05 14:00:38,302 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:00:38,303 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:00:38,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:00:38,373 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;@bd40026, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:00:38,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:00:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-05 14:00:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-05 14:00:38,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:38,384 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:38,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:38,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -262517723, now seen corresponding path program 1 times [2024-11-05 14:00:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42361729] [2024-11-05 14:00:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:38,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:38,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:00:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:38,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:00:38,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:38,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:38,740 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42361729] [2024-11-05 14:00:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [42361729] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:38,741 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:38,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:00:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200309209] [2024-11-05 14:00:38,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:38,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:00:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:00:38,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:38,783 INFO L87 Difference]: Start difference. First operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:00:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:38,806 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2024-11-05 14:00:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:00:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-05 14:00:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:38,814 INFO L225 Difference]: With dead ends: 142 [2024-11-05 14:00:38,814 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 14:00:38,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:38,820 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:38,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 14:00:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-05 14:00:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 45 states have internal predecessors, (53), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-11-05 14:00:38,862 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 48 [2024-11-05 14:00:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:38,866 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-11-05 14:00:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:00:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-11-05 14:00:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-05 14:00:38,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:38,869 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:38,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 14:00:39,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:39,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:39,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:39,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1978069188, now seen corresponding path program 1 times [2024-11-05 14:00:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148928308] [2024-11-05 14:00:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:39,071 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:39,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:39,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:39,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:00:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:39,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 14:00:39,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:39,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:39,365 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148928308] [2024-11-05 14:00:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [148928308] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:39,365 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:39,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-05 14:00:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954774386] [2024-11-05 14:00:39,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:39,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:00:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:00:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:39,368 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:39,423 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-11-05 14:00:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:39,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2024-11-05 14:00:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:39,425 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:00:39,425 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:00:39,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 14:00:39,427 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:39,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:00:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-05 14:00:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2024-11-05 14:00:39,438 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 54 [2024-11-05 14:00:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:39,438 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2024-11-05 14:00:39,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2024-11-05 14:00:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-05 14:00:39,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:39,440 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:39,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:00:39,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:39,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:39,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1424861892, now seen corresponding path program 1 times [2024-11-05 14:00:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342573897] [2024-11-05 14:00:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:39,643 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:39,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:39,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:00:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:39,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:00:39,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:39,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:39,989 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342573897] [2024-11-05 14:00:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [342573897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:39,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:39,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-05 14:00:39,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875321237] [2024-11-05 14:00:39,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:39,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 14:00:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 14:00:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:00:39,995 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:40,183 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2024-11-05 14:00:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:00:40,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2024-11-05 14:00:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:40,185 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:00:40,186 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:00:40,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:00:40,187 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:40,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:00:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:00:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-05 14:00:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.18) internal successors, (59), 51 states have internal predecessors, (59), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-11-05 14:00:40,206 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 56 [2024-11-05 14:00:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:40,207 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-11-05 14:00:40,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-11-05 14:00:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-05 14:00:40,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:40,213 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:40,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-05 14:00:40,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:40,414 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:40,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1236820284, now seen corresponding path program 2 times [2024-11-05 14:00:40,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:40,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521756851] [2024-11-05 14:00:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:40,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:40,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:00:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:40,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 14:00:40,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:40,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:41,138 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521756851] [2024-11-05 14:00:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [521756851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:41,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:41,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-05 14:00:41,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138440163] [2024-11-05 14:00:41,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:41,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 14:00:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 14:00:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-05 14:00:41,140 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:41,693 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2024-11-05 14:00:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 14:00:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2024-11-05 14:00:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:41,700 INFO L225 Difference]: With dead ends: 136 [2024-11-05 14:00:41,700 INFO L226 Difference]: Without dead ends: 83 [2024-11-05 14:00:41,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=347, Unknown=0, NotChecked=0, Total=552 [2024-11-05 14:00:41,703 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:41,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 667 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:00:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-05 14:00:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-05 14:00:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-11-05 14:00:41,714 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 60 [2024-11-05 14:00:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:41,715 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-11-05 14:00:41,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-11-05 14:00:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:00:41,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:41,717 INFO L215 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:41,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 14:00:41,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:41,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:41,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:41,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1672316612, now seen corresponding path program 3 times [2024-11-05 14:00:41,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:41,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015607347] [2024-11-05 14:00:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:41,921 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:41,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:41,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:41,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:00:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:42,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-05 14:00:42,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:42,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:43,254 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:43,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015607347] [2024-11-05 14:00:43,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1015607347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:43,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-05 14:00:43,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038414043] [2024-11-05 14:00:43,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:43,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-05 14:00:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-05 14:00:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 14:00:43,257 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:43,964 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2024-11-05 14:00:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:00:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2024-11-05 14:00:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:43,967 INFO L225 Difference]: With dead ends: 138 [2024-11-05 14:00:43,967 INFO L226 Difference]: Without dead ends: 85 [2024-11-05 14:00:43,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 14:00:43,972 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:43,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1414 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-05 14:00:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-05 14:00:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-05 14:00:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.15) internal successors, (69), 61 states have internal predecessors, (69), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-05 14:00:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2024-11-05 14:00:43,991 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 68 [2024-11-05 14:00:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:43,991 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2024-11-05 14:00:43,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:00:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2024-11-05 14:00:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:00:43,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:43,994 INFO L215 NwaCegarLoop]: trace histogram [16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:44,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:00:44,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:44,195 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -345587516, now seen corresponding path program 4 times [2024-11-05 14:00:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653165843] [2024-11-05 14:00:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:44,196 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:44,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:44,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:00:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:44,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 14:00:44,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-05 14:00:44,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-05 14:00:44,786 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653165843] [2024-11-05 14:00:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [653165843] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:44,787 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2024-11-05 14:00:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742623500] [2024-11-05 14:00:44,787 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:44,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 14:00:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 14:00:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-05 14:00:44,788 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-05 14:00:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:45,120 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2024-11-05 14:00:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:00:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 70 [2024-11-05 14:00:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:45,124 INFO L225 Difference]: With dead ends: 171 [2024-11-05 14:00:45,124 INFO L226 Difference]: Without dead ends: 94 [2024-11-05 14:00:45,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-05 14:00:45,128 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 44 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:45,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 421 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 14:00:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-05 14:00:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2024-11-05 14:00:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.15625) internal successors, (74), 66 states have internal predecessors, (74), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-05 14:00:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-11-05 14:00:45,150 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 70 [2024-11-05 14:00:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:45,150 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-11-05 14:00:45,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-05 14:00:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-11-05 14:00:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:00:45,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:45,151 INFO L215 NwaCegarLoop]: trace histogram [16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:45,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:00:45,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:45,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:45,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 135492742, now seen corresponding path program 1 times [2024-11-05 14:00:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66332671] [2024-11-05 14:00:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:45,353 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:45,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:45,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:00:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:45,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-05 14:00:45,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:50,221 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 14:00:50,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 115 [2024-11-05 14:00:50,557 INFO L224 Elim1Store]: Index analysis took 150 ms [2024-11-05 14:01:32,708 WARN L286 SmtUtils]: Spent 42.14s on a formula simplification. DAG size of input: 125 DAG size of output: 50 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-05 14:01:32,708 INFO L349 Elim1Store]: treesize reduction 503, result has 17.9 percent of original size [2024-11-05 14:01:32,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 635 treesize of output 1321 [2024-11-05 14:01:32,828 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:32,834 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:32,841 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:32,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:34,362 INFO L349 Elim1Store]: treesize reduction 331, result has 2.4 percent of original size [2024-11-05 14:01:34,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 19 case distinctions, treesize of input 1760 treesize of output 1837 [2024-11-05 14:01:39,801 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-05 14:01:39,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 161 [2024-11-05 14:01:40,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-05 14:01:41,467 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,468 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 130 [2024-11-05 14:01:41,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2024-11-05 14:01:41,666 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,667 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,694 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,695 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:41,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2024-11-05 14:01:44,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 886 treesize of output 752 [2024-11-05 14:01:45,743 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:45,745 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:45,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 148 [2024-11-05 14:01:45,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2024-11-05 14:01:51,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 3943 treesize of output 3649 [2024-11-05 14:01:54,023 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 14:01:58,837 INFO L349 Elim1Store]: treesize reduction 113, result has 35.8 percent of original size [2024-11-05 14:01:58,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 252 treesize of output 540 [2024-11-05 14:02:08,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 37