/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_rend_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:01:12,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:01:12,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:01:12,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:01:12,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:01:12,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:01:12,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:01:12,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:01:12,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:01:12,338 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:01:12,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:01:12,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:01:12,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:01:12,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:01:12,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:01:12,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:01:12,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:01:12,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:01:12,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:01:12,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:01:12,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:01:12,344 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:01:12,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:01:12,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:01:12,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:01:12,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:01:12,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:01:12,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:01:12,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:01:12,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:01:12,346 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:01:12,347 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:01:12,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:01:12,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:01:12,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:01:12,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:01:12,348 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:01:12,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:01:12,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:01:12,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:01:12,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:01:12,555 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:01:12,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness_negated.i [2024-11-05 14:01:13,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:01:14,102 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:01:14,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness_negated.i [2024-11-05 14:01:14,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b8e82d5/4a7d7afe2a044734bb6e367c49448a20/FLAGe1e153f1f [2024-11-05 14:01:14,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9b8e82d5/4a7d7afe2a044734bb6e367c49448a20 [2024-11-05 14:01:14,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:01:14,383 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:01:14,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:01:14,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:01:14,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:01:14,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:01:14" (1/1) ... [2024-11-05 14:01:14,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ae8065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:14, skipping insertion in model container [2024-11-05 14:01:14,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:01:14" (1/1) ... [2024-11-05 14:01:14,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:01:14,677 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_rend_harness_negated.i[4494,4507] [2024-11-05 14:01:14,684 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_rend_harness_negated.i[4554,4567] [2024-11-05 14:01:15,152 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,217 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,217 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,218 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,231 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,235 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,235 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,236 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,236 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,236 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,237 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,239 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,239 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,244 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,244 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,252 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,253 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,253 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,254 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,255 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,255 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,255 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,256 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,257 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,257 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,258 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,258 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,258 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,258 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,455 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,456 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,460 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,461 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,607 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:15,651 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 14:01:15,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:01:15,676 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_rend_harness_negated.i[4494,4507] [2024-11-05 14:01:15,677 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_rend_harness_negated.i[4554,4567] [2024-11-05 14:01:15,698 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,711 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,712 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 14:01:15,712 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 14:01:15,717 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,718 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,718 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,719 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,719 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,719 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,723 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,725 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,725 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,725 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,726 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 14:01:15,732 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,732 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 14:01:15,732 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,733 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,733 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,733 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,733 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,734 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,734 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,735 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,735 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,782 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,782 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,782 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,783 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,800 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:01:15,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:15,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:01:15,817 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_rend_harness_negated.i[4494,4507] [2024-11-05 14:01:15,817 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_rend_harness_negated.i[4554,4567] [2024-11-05 14:01:15,838 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,839 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,839 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,839 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,839 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,843 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,843 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,844 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,844 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:01:15,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:01:16,046 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 14:01:16,056 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:01:16,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16 WrapperNode [2024-11-05 14:01:16,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:01:16,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:01:16,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:01:16,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:01:16,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,168 INFO L138 Inliner]: procedures = 687, calls = 1038, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 138 [2024-11-05 14:01:16,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:01:16,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:01:16,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:01:16,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:01:16,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,200 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 5, 14]. 67 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 14:01:16,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:01:16,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:01:16,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:01:16,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:01:16,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (1/1) ... [2024-11-05 14:01:16,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:01:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:01:16,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 14:01:16,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 14:01:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 14:01:16,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:01:16,294 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:01:16,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 14:01:16,295 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:01:16,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:01:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:01:16,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 14:01:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 14:01:16,296 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 14:01:16,468 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:01:16,469 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:01:16,726 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-05 14:01:16,726 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:01:16,742 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:01:16,742 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 14:01:16,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:01:16 BoogieIcfgContainer [2024-11-05 14:01:16,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:01:16,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:01:16,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:01:16,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:01:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:01:14" (1/3) ... [2024-11-05 14:01:16,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeccfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:01:16, skipping insertion in model container [2024-11-05 14:01:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:01:16" (2/3) ... [2024-11-05 14:01:16,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeccfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:01:16, skipping insertion in model container [2024-11-05 14:01:16,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:01:16" (3/3) ... [2024-11-05 14:01:16,750 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness_negated.i [2024-11-05 14:01:16,762 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:01:16,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:01:16,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:01:16,825 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;@a0f9ea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:01:16,826 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:01:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-05 14:01:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:01:16,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:16,836 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:16,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:16,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2107862704, now seen corresponding path program 1 times [2024-11-05 14:01:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043972986] [2024-11-05 14:01:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:16,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:16,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:01:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:17,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:01:17,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 14:01:17,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 14:01:17,088 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:17,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043972986] [2024-11-05 14:01:17,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2043972986] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:01:17,089 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:01:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:01:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891452236] [2024-11-05 14:01:17,091 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:17,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:01:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:01:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:01:17,125 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 14:01:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:17,150 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2024-11-05 14:01:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:01:17,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-05 14:01:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:17,159 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:01:17,159 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 14:01:17,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:01:17,164 INFO L432 NwaCegarLoop]: 87 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, 87 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:17,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 14:01:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-05 14:01:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 14:01:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-11-05 14:01:17,201 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2024-11-05 14:01:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:17,201 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-11-05 14:01:17,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 14:01:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-11-05 14:01:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:01:17,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:17,206 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:17,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:17,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:17,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:17,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash 900796622, now seen corresponding path program 1 times [2024-11-05 14:01:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:17,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546297894] [2024-11-05 14:01:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:17,408 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:17,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:17,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:17,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:01:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:17,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:17,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:17,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:17,720 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546297894] [2024-11-05 14:01:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1546297894] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:17,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:17,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476159360] [2024-11-05 14:01:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:17,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:17,722 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:17,774 INFO L93 Difference]: Finished difference Result 114 states and 152 transitions. [2024-11-05 14:01:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-05 14:01:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:17,777 INFO L225 Difference]: With dead ends: 114 [2024-11-05 14:01:17,777 INFO L226 Difference]: Without dead ends: 65 [2024-11-05 14:01:17,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:17,778 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:17,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-05 14:01:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-05 14:01:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2024-11-05 14:01:17,790 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 68 [2024-11-05 14:01:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:17,790 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-05 14:01:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2024-11-05 14:01:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:01:17,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:17,792 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:17,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:01:17,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:17,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:17,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 577933322, now seen corresponding path program 1 times [2024-11-05 14:01:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:17,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063899703] [2024-11-05 14:01:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:17,996 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:17,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:17,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:17,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:01:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:18,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:18,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:18,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:18,227 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063899703] [2024-11-05 14:01:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2063899703] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:18,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529287646] [2024-11-05 14:01:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:18,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:18,229 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:18,280 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2024-11-05 14:01:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:18,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2024-11-05 14:01:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:18,283 INFO L225 Difference]: With dead ends: 119 [2024-11-05 14:01:18,283 INFO L226 Difference]: Without dead ends: 68 [2024-11-05 14:01:18,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:18,284 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:18,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-05 14:01:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-05 14:01:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2024-11-05 14:01:18,297 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 70 [2024-11-05 14:01:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:18,297 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2024-11-05 14:01:18,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2024-11-05 14:01:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 14:01:18,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:18,298 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:18,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 14:01:18,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:18,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:18,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash -34807881, now seen corresponding path program 1 times [2024-11-05 14:01:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:18,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305735944] [2024-11-05 14:01:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:18,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:18,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:01:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:18,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:18,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:18,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:18,696 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305735944] [2024-11-05 14:01:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [305735944] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563840053] [2024-11-05 14:01:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:18,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:18,698 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:18,752 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2024-11-05 14:01:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:18,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-05 14:01:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:18,753 INFO L225 Difference]: With dead ends: 123 [2024-11-05 14:01:18,754 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:01:18,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:18,755 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:18,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 508 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:01:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-05 14:01:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 49 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2024-11-05 14:01:18,760 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 72 [2024-11-05 14:01:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:18,760 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2024-11-05 14:01:18,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2024-11-05 14:01:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 14:01:18,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:18,761 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:18,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 14:01:18,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:18,962 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:18,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:18,963 INFO L85 PathProgramCache]: Analyzing trace with hash 387052583, now seen corresponding path program 1 times [2024-11-05 14:01:18,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:18,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911142970] [2024-11-05 14:01:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:18,963 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:18,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:18,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:01:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:19,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:19,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 14:01:19,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 14:01:19,191 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911142970] [2024-11-05 14:01:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [911142970] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 7 [2024-11-05 14:01:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328389550] [2024-11-05 14:01:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:19,193 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:01:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:19,299 INFO L93 Difference]: Finished difference Result 128 states and 177 transitions. [2024-11-05 14:01:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:19,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-05 14:01:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:19,301 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:01:19,301 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:01:19,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:19,302 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 25 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:19,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 230 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:01:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-11-05 14:01:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 51 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-05 14:01:19,310 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 73 [2024-11-05 14:01:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:19,310 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-05 14:01:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:01:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-05 14:01:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 14:01:19,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:19,311 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:19,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:01:19,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:19,512 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:19,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1911369352, now seen corresponding path program 1 times [2024-11-05 14:01:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201501620] [2024-11-05 14:01:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:19,513 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:19,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:19,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:01:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:19,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:19,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 14:01:19,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 14:01:19,733 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201501620] [2024-11-05 14:01:19,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [201501620] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:19,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22691168] [2024-11-05 14:01:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:19,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:19,735 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:19,778 INFO L93 Difference]: Finished difference Result 119 states and 160 transitions. [2024-11-05 14:01:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-05 14:01:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:19,779 INFO L225 Difference]: With dead ends: 119 [2024-11-05 14:01:19,779 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:01:19,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:19,780 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:19,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:01:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-05 14:01:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 14:01:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-05 14:01:19,787 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 84 [2024-11-05 14:01:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:19,788 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-05 14:01:19,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-05 14:01:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 14:01:19,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:19,789 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:19,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:01:19,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:19,993 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:19,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1945074884, now seen corresponding path program 1 times [2024-11-05 14:01:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:19,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355639624] [2024-11-05 14:01:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:19,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:19,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:19,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:01:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:20,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:20,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 14:01:20,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-05 14:01:20,263 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:20,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355639624] [2024-11-05 14:01:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355639624] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432331441] [2024-11-05 14:01:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:20,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:20,265 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:20,319 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2024-11-05 14:01:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:20,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-05 14:01:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:20,321 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:01:20,321 INFO L226 Difference]: Without dead ends: 74 [2024-11-05 14:01:20,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:20,322 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:20,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-05 14:01:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-05 14:01:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 14:01:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-05 14:01:20,330 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 86 [2024-11-05 14:01:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:20,331 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-05 14:01:20,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-05 14:01:20,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 14:01:20,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:20,332 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:20,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:01:20,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:20,533 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:20,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash -110525007, now seen corresponding path program 1 times [2024-11-05 14:01:20,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:20,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337421555] [2024-11-05 14:01:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:20,534 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:20,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:20,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:20,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:01:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:20,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:20,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 14:01:20,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-05 14:01:20,780 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337421555] [2024-11-05 14:01:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [337421555] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221062996] [2024-11-05 14:01:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:20,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:20,782 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:20,846 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-11-05 14:01:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2024-11-05 14:01:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:20,852 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:01:20,852 INFO L226 Difference]: Without dead ends: 73 [2024-11-05 14:01:20,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:20,853 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:20,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 507 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-05 14:01:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-05 14:01:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 51 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 14:01:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-11-05 14:01:20,870 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 88 [2024-11-05 14:01:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:20,870 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-11-05 14:01:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-11-05 14:01:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 14:01:20,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:20,875 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:20,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:21,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:21,076 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:21,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1438193982, now seen corresponding path program 2 times [2024-11-05 14:01:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40935815] [2024-11-05 14:01:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:21,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:21,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:01:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:21,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:21,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 14:01:21,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 14:01:21,294 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40935815] [2024-11-05 14:01:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [40935815] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:01:21,294 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:01:21,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-05 14:01:21,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919144248] [2024-11-05 14:01:21,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:21,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:21,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:21,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:21,295 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:21,336 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2024-11-05 14:01:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 100 [2024-11-05 14:01:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:21,337 INFO L225 Difference]: With dead ends: 79 [2024-11-05 14:01:21,337 INFO L226 Difference]: Without dead ends: 77 [2024-11-05 14:01:21,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:21,338 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:21,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 465 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-05 14:01:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-11-05 14:01:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 56 states have internal predecessors, (67), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-05 14:01:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-11-05 14:01:21,345 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 100 [2024-11-05 14:01:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:21,345 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-11-05 14:01:21,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-11-05 14:01:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 14:01:21,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:21,346 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:21,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 14:01:21,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:21,549 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:21,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash 472600894, now seen corresponding path program 1 times [2024-11-05 14:01:21,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:21,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204816081] [2024-11-05 14:01:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:21,550 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:21,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:21,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:01:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:21,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:21,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:21,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:21,790 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:21,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204816081] [2024-11-05 14:01:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1204816081] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:01:21,790 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:01:21,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2024-11-05 14:01:21,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335820603] [2024-11-05 14:01:21,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:21,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-05 14:01:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-05 14:01:21,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:21,791 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:21,835 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2024-11-05 14:01:21,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 102 [2024-11-05 14:01:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:21,837 INFO L225 Difference]: With dead ends: 87 [2024-11-05 14:01:21,837 INFO L226 Difference]: Without dead ends: 85 [2024-11-05 14:01:21,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:21,837 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:21,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 532 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-05 14:01:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2024-11-05 14:01:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-05 14:01:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2024-11-05 14:01:21,850 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 102 [2024-11-05 14:01:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:21,850 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2024-11-05 14:01:21,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2024-11-05 14:01:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-05 14:01:21,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:21,851 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:21,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 14:01:22,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:22,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:22,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1551228757, now seen corresponding path program 1 times [2024-11-05 14:01:22,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:22,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465045625] [2024-11-05 14:01:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:22,054 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:22,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:22,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:22,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:01:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:22,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:22,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:22,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 14:01:22,387 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465045625] [2024-11-05 14:01:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [465045625] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:01:22,387 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:01:22,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2024-11-05 14:01:22,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829274170] [2024-11-05 14:01:22,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:22,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 14:01:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 14:01:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:22,388 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:22,444 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-05 14:01:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 104 [2024-11-05 14:01:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:22,446 INFO L225 Difference]: With dead ends: 86 [2024-11-05 14:01:22,446 INFO L226 Difference]: Without dead ends: 84 [2024-11-05 14:01:22,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:01:22,446 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 10 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:22,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 596 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-05 14:01:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2024-11-05 14:01:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 54 states have internal predecessors, (66), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-05 14:01:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2024-11-05 14:01:22,452 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 104 [2024-11-05 14:01:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:22,453 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2024-11-05 14:01:22,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 14:01:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2024-11-05 14:01:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-05 14:01:22,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:22,454 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:22,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 14:01:22,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:22,656 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:22,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash 166988707, now seen corresponding path program 1 times [2024-11-05 14:01:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465753589] [2024-11-05 14:01:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:22,661 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:22,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:22,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 14:01:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:22,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 14:01:22,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:22,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:22,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:23,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:01:23,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:23,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-05 14:01:26,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 14:01:27,265 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465753589] [2024-11-05 14:01:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [465753589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:27,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-05 14:01:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353341727] [2024-11-05 14:01:27,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:27,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 14:01:27,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 14:01:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-05 14:01:27,267 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 18 states have internal predecessors, (126), 10 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-05 14:01:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:29,896 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2024-11-05 14:01:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:01:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 18 states have internal predecessors, (126), 10 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 106 [2024-11-05 14:01:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:29,904 INFO L225 Difference]: With dead ends: 210 [2024-11-05 14:01:29,904 INFO L226 Difference]: Without dead ends: 157 [2024-11-05 14:01:29,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-05 14:01:29,906 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 117 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:29,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 649 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-05 14:01:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-05 14:01:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2024-11-05 14:01:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 26 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-05 14:01:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 192 transitions. [2024-11-05 14:01:29,937 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 192 transitions. Word has length 106 [2024-11-05 14:01:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:29,937 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 192 transitions. [2024-11-05 14:01:29,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 18 states have internal predecessors, (126), 10 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-05 14:01:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 192 transitions. [2024-11-05 14:01:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-05 14:01:29,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:29,939 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:29,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:30,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:30,144 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:30,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash -844128543, now seen corresponding path program 1 times [2024-11-05 14:01:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:30,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324891233] [2024-11-05 14:01:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:30,145 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:30,147 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:30,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 14:01:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:30,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-05 14:01:30,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:30,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:30,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:30,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:01:30,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:30,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 14:01:39,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 14:01:40,861 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324891233] [2024-11-05 14:01:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1324891233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:40,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2024-11-05 14:01:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319994346] [2024-11-05 14:01:40,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 14:01:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 14:01:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-05 14:01:40,863 INFO L87 Difference]: Start difference. First operand 146 states and 192 transitions. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 25 states have internal predecessors, (140), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-05 14:01:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:47,681 INFO L93 Difference]: Finished difference Result 319 states and 428 transitions. [2024-11-05 14:01:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-05 14:01:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 25 states have internal predecessors, (140), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) Word has length 106 [2024-11-05 14:01:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:47,685 INFO L225 Difference]: With dead ends: 319 [2024-11-05 14:01:47,685 INFO L226 Difference]: Without dead ends: 189 [2024-11-05 14:01:47,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 185 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=368, Invalid=1984, Unknown=0, NotChecked=0, Total=2352 [2024-11-05 14:01:47,686 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 158 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:47,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1208 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-05 14:01:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-05 14:01:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2024-11-05 14:01:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.286764705882353) internal successors, (175), 139 states have internal predecessors, (175), 27 states have call successors, (27), 14 states have call predecessors, (27), 15 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29) [2024-11-05 14:01:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 231 transitions. [2024-11-05 14:01:47,736 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 231 transitions. Word has length 106 [2024-11-05 14:01:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:47,737 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 231 transitions. [2024-11-05 14:01:47,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 25 states have internal predecessors, (140), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-05 14:01:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 231 transitions. [2024-11-05 14:01:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-05 14:01:47,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:47,738 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-05 14:01:47,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-05 14:01:47,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:47,943 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:47,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash -245692835, now seen corresponding path program 1 times [2024-11-05 14:01:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803431153] [2024-11-05 14:01:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:47,946 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:47,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 14:01:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:48,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-05 14:01:48,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:48,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:48,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:48,229 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 14:01:48,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 14:01:48,273 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 14:01:48,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 14:01:48,513 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 14:01:48,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 14:01:48,546 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 14:01:48,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 14:02:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 32 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 14:02:08,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:02:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-05 14:02:09,719 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:02:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803431153] [2024-11-05 14:02:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [803431153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:02:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:02:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2024-11-05 14:02:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640063307] [2024-11-05 14:02:09,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:02:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 14:02:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:02:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 14:02:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-05 14:02:09,721 INFO L87 Difference]: Start difference. First operand 179 states and 231 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 26 states have internal predecessors, (144), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-05 14:02:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:02:22,445 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2024-11-05 14:02:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-05 14:02:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 26 states have internal predecessors, (144), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) Word has length 108 [2024-11-05 14:02:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:02:22,449 INFO L225 Difference]: With dead ends: 619 [2024-11-05 14:02:22,449 INFO L226 Difference]: Without dead ends: 477 [2024-11-05 14:02:22,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=445, Invalid=2525, Unknown=0, NotChecked=0, Total=2970 [2024-11-05 14:02:22,452 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 332 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-05 14:02:22,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1400 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-05 14:02:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-05 14:02:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 335. [2024-11-05 14:02:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 253 states have (on average 1.3043478260869565) internal successors, (330), 261 states have internal predecessors, (330), 54 states have call successors, (54), 22 states have call predecessors, (54), 27 states have return successors, (77), 51 states have call predecessors, (77), 51 states have call successors, (77) [2024-11-05 14:02:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 461 transitions. [2024-11-05 14:02:22,529 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 461 transitions. Word has length 108 [2024-11-05 14:02:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:02:22,530 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 461 transitions. [2024-11-05 14:02:22,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 26 states have internal predecessors, (144), 11 states have call successors, (21), 4 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-05 14:02:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 461 transitions. [2024-11-05 14:02:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-05 14:02:22,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:02:22,531 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:02:22,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 14:02:22,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:22,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:02:22,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:02:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 175998809, now seen corresponding path program 1 times [2024-11-05 14:02:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:02:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567482828] [2024-11-05 14:02:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:02:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:02:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:22,739 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:02:22,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 14:02:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:02:22,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 14:02:22,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:02:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-05 14:02:22,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:02:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-05 14:02:22,913 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:02:22,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567482828] [2024-11-05 14:02:22,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1567482828] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:02:22,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:02:22,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 14:02:22,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198527375] [2024-11-05 14:02:22,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:02:22,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:02:22,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:02:22,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:02:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:02:22,915 INFO L87 Difference]: Start difference. First operand 335 states and 461 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:02:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:02:22,973 INFO L93 Difference]: Finished difference Result 509 states and 689 transitions. [2024-11-05 14:02:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:02:22,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 108 [2024-11-05 14:02:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:02:22,974 INFO L225 Difference]: With dead ends: 509 [2024-11-05 14:02:22,974 INFO L226 Difference]: Without dead ends: 215 [2024-11-05 14:02:22,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:02:22,976 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:02:22,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 232 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:02:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-05 14:02:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2024-11-05 14:02:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 139 states have internal predecessors, (168), 27 states have call successors, (27), 14 states have call predecessors, (27), 15 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29) [2024-11-05 14:02:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2024-11-05 14:02:23,018 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 108 [2024-11-05 14:02:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:02:23,018 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2024-11-05 14:02:23,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 14:02:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2024-11-05 14:02:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-05 14:02:23,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:02:23,019 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:02:23,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-05 14:02:23,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:23,222 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:02:23,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:02:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash -674595111, now seen corresponding path program 2 times [2024-11-05 14:02:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:02:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013959939] [2024-11-05 14:02:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:02:23,223 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:02:23,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:23,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:02:23,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-05 14:02:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:02:23,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-05 14:02:23,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:02:23,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:02:23,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:02:23,487 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 14:02:23,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 14:02:23,518 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 14:02:23,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 14:02:23,815 INFO L349 Elim1Store]: treesize reduction 36, result has 53.8 percent of original size [2024-11-05 14:02:23,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 113 [2024-11-05 14:02:23,918 INFO L349 Elim1Store]: treesize reduction 80, result has 24.5 percent of original size [2024-11-05 14:02:23,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 63 [2024-11-05 14:02:24,414 INFO L349 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2024-11-05 14:02:24,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 188 treesize of output 141 [2024-11-05 14:02:24,501 INFO L349 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2024-11-05 14:02:24,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 106 treesize of output 123