/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_begin_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 13:58:22,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 13:58:22,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 13:58:22,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 13:58:22,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 13:58:22,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 13:58:22,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 13:58:22,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 13:58:22,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 13:58:22,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 13:58:22,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 13:58:22,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 13:58:22,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 13:58:22,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 13:58:22,938 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 13:58:22,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 13:58:22,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 13:58:22,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 13:58:22,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 13:58:22,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 13:58:22,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 13:58:22,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 13:58:22,942 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 13:58:22,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 13:58:22,942 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 13:58:22,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 13:58:22,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 13:58:22,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 13:58:22,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 13:58:22,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 13:58:22,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 13:58:22,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:22,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 13:58:22,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 13:58:22,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 13:58:22,945 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 13:58:22,946 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 13:58:22,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 13:58:22,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 13:58:22,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 13:58:22,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 13:58:22,947 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 13:58:23,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 13:58:23,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 13:58:23,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 13:58:23,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 13:58:23,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 13:58:23,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i [2024-11-05 13:58:24,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 13:58:25,049 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 13:58:25,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i [2024-11-05 13:58:25,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/298c38abb/9cc99d60b74547309817f7994410234f/FLAG2f6c81eeb [2024-11-05 13:58:25,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/298c38abb/9cc99d60b74547309817f7994410234f [2024-11-05 13:58:25,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 13:58:25,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 13:58:25,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:25,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 13:58:25,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 13:58:25,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:25" (1/1) ... [2024-11-05 13:58:25,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768ffc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:25, skipping insertion in model container [2024-11-05 13:58:25,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:25" (1/1) ... [2024-11-05 13:58:25,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:25,617 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_begin_harness_negated.i[4495,4508] [2024-11-05 13:58:25,625 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_begin_harness_negated.i[4555,4568] [2024-11-05 13:58:26,277 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,375 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,375 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,376 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,399 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,402 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,403 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,403 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,404 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,404 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,408 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,410 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,411 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,418 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,419 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,436 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,437 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,437 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,437 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,439 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,439 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,440 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,440 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,441 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,443 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,443 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,444 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,444 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,445 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,676 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,677 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,677 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,678 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,780 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:26,826 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 13:58:26,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:26,880 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_begin_harness_negated.i[4495,4508] [2024-11-05 13:58:26,881 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_begin_harness_negated.i[4555,4568] [2024-11-05 13:58:26,907 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,923 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,924 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,926 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,933 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,935 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,936 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,936 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,938 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,939 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,939 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,944 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,945 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,946 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,947 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,954 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,955 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,955 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,956 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,957 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,957 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,957 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,957 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,961 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,962 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,962 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,963 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:26,963 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:26,963 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,027 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:27,032 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:27,032 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:27,033 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:27,073 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:27,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:27,090 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 13:58:27,103 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_begin_harness_negated.i[4495,4508] [2024-11-05 13:58:27,104 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_begin_harness_negated.i[4555,4568] [2024-11-05 13:58:27,151 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,151 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,154 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,156 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,156 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,162 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,162 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,163 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,164 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,164 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,165 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,166 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,166 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:27,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:27,456 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 13:58:27,468 INFO L204 MainTranslator]: Completed translation [2024-11-05 13:58:27,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27 WrapperNode [2024-11-05 13:58:27,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:27,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:27,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 13:58:27,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 13:58:27,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,592 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-05 13:58:27,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:27,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 13:58:27,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 13:58:27,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 13:58:27,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,632 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 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 13:58:27,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 13:58:27,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 13:58:27,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 13:58:27,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 13:58:27,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 13:58:27,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 13:58:27,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 13:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 13:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 13:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 13:58:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 13:58:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 13:58:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 13:58:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 13:58:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 13:58:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 13:58:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 13:58:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 13:58:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 13:58:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 13:58:27,968 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 13:58:27,969 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 13:58:28,285 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-05 13:58:28,285 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 13:58:28,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 13:58:28,298 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 13:58:28,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:28 BoogieIcfgContainer [2024-11-05 13:58:28,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 13:58:28,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 13:58:28,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 13:58:28,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 13:58:28,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:58:25" (1/3) ... [2024-11-05 13:58:28,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b8c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:28, skipping insertion in model container [2024-11-05 13:58:28,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27" (2/3) ... [2024-11-05 13:58:28,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b8c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:28, skipping insertion in model container [2024-11-05 13:58:28,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:28" (3/3) ... [2024-11-05 13:58:28,308 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness_negated.i [2024-11-05 13:58:28,321 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 13:58:28,321 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 13:58:28,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 13:58:28,386 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;@23193cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 13:58:28,387 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 13:58:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 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 13:58:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 13:58:28,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:28,403 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 13:58:28,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:28,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-05 13:58:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:28,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959254456] [2024-11-05 13:58:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:28,417 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:28,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:28,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:28,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 13:58:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:28,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 13:58:28,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:28,614 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 13:58:28,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:28,658 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 13:58:28,659 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:28,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959254456] [2024-11-05 13:58:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1959254456] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:28,659 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:28,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 13:58:28,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423853793] [2024-11-05 13:58:28,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:28,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 13:58:28,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 13:58:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:58:28,694 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 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 13:58:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:28,726 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-05 13:58:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 13:58:28,730 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 13:58:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:28,738 INFO L225 Difference]: With dead ends: 130 [2024-11-05 13:58:28,738 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 13:58:28,741 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 13:58:28,743 INFO L432 NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:28,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 13:58:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-05 13:58:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 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 13:58:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-05 13:58:28,785 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-05 13:58:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:28,786 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-05 13:58:28,788 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 13:58:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-05 13:58:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 13:58:28,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:28,791 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 13:58:28,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 13:58:28,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:28,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:28,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-05 13:58:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:28,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882781950] [2024-11-05 13:58:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:28,994 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:28,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:28,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 13:58:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:29,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 13:58:29,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:29,228 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 13:58:29,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:29,339 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 13:58:29,340 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882781950] [2024-11-05 13:58:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [882781950] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:29,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:29,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 13:58:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190447558] [2024-11-05 13:58:29,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 13:58:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 13:58:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:58:29,345 INFO L87 Difference]: Start difference. First operand 64 states and 83 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 13:58:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:29,418 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2024-11-05 13:58:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:58:29,446 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 13:58:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:29,448 INFO L225 Difference]: With dead ends: 116 [2024-11-05 13:58:29,448 INFO L226 Difference]: Without dead ends: 66 [2024-11-05 13:58:29,449 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 13:58:29,450 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 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 13:58:29,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-05 13:58:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-05 13:58:29,463 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 13:58:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2024-11-05 13:58:29,467 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 68 [2024-11-05 13:58:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:29,467 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2024-11-05 13:58:29,467 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 13:58:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2024-11-05 13:58:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 13:58:29,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:29,471 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 13:58:29,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:29,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:29,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:29,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2024-11-05 13:58:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:29,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48134105] [2024-11-05 13:58:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:29,676 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:29,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:29,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:29,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 13:58:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:29,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 13:58:29,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:29,874 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 13:58:29,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:29,975 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 13:58:29,976 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48134105] [2024-11-05 13:58:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [48134105] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:29,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 13:58:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514211804] [2024-11-05 13:58:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:29,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 13:58:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 13:58:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:29,978 INFO L87 Difference]: Start difference. First operand 66 states and 87 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 13:58:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:30,056 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2024-11-05 13:58:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 13:58:30,057 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 13:58:30,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:30,058 INFO L225 Difference]: With dead ends: 121 [2024-11-05 13:58:30,059 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 13:58:30,059 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 13:58:30,060 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:30,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 13:58:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-05 13:58:30,067 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 13:58:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2024-11-05 13:58:30,069 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 70 [2024-11-05 13:58:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:30,069 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2024-11-05 13:58:30,069 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 13:58:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2024-11-05 13:58:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 13:58:30,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:30,071 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 13:58:30,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 13:58:30,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:30,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2024-11-05 13:58:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360786784] [2024-11-05 13:58:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:30,273 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:30,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 13:58:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:30,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:30,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:30,459 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 13:58:30,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:30,541 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 13:58:30,542 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360786784] [2024-11-05 13:58:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [360786784] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:30,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:30,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 13:58:30,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926147182] [2024-11-05 13:58:30,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:30,544 INFO L87 Difference]: Start difference. First operand 67 states and 88 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 13:58:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:30,627 INFO L93 Difference]: Finished difference Result 125 states and 167 transitions. [2024-11-05 13:58:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 13:58:30,628 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 13:58:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:30,629 INFO L225 Difference]: With dead ends: 125 [2024-11-05 13:58:30,629 INFO L226 Difference]: Without dead ends: 72 [2024-11-05 13:58:30,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:30,631 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:30,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 515 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-05 13:58:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2024-11-05 13:58:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 50 states have internal predecessors, (61), 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 13:58:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2024-11-05 13:58:30,639 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 72 [2024-11-05 13:58:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:30,639 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2024-11-05 13:58:30,640 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 13:58:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2024-11-05 13:58:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 13:58:30,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:30,641 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 13:58:30,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:30,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,842 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:30,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2024-11-05 13:58:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:30,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868555276] [2024-11-05 13:58:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:30,843 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,844 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:30,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 13:58:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:30,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:30,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:31,040 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 13:58:31,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:31,094 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 13:58:31,095 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868555276] [2024-11-05 13:58:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1868555276] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 6 [2024-11-05 13:58:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709724124] [2024-11-05 13:58:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:31,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 13:58:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 13:58:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 13:58:31,098 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:58:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:31,213 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2024-11-05 13:58:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 13:58:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:58:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:31,215 INFO L225 Difference]: With dead ends: 130 [2024-11-05 13:58:31,215 INFO L226 Difference]: Without dead ends: 76 [2024-11-05 13:58:31,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 13:58:31,216 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 16 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:31,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 247 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-05 13:58:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2024-11-05 13:58:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 52 states have internal predecessors, (64), 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 13:58:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2024-11-05 13:58:31,225 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 73 [2024-11-05 13:58:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:31,225 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2024-11-05 13:58:31,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 13:58:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2024-11-05 13:58:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 13:58:31,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:31,227 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 13:58:31,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 13:58:31,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:31,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -233275002, now seen corresponding path program 1 times [2024-11-05 13:58:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:31,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642784004] [2024-11-05 13:58:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:31,431 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:31,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:31,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 13:58:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:31,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 13:58:31,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:31,612 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 13:58:31,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:31,697 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 13:58:31,698 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:31,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642784004] [2024-11-05 13:58:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1642784004] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:31,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:31,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 13:58:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750534844] [2024-11-05 13:58:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 13:58:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 13:58:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:58:31,700 INFO L87 Difference]: Start difference. First operand 70 states and 92 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 13:58:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:31,740 INFO L93 Difference]: Finished difference Result 121 states and 162 transitions. [2024-11-05 13:58:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:58:31,740 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 13:58:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:31,742 INFO L225 Difference]: With dead ends: 121 [2024-11-05 13:58:31,742 INFO L226 Difference]: Without dead ends: 72 [2024-11-05 13:58:31,742 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 13:58:31,743 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 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 13:58:31,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-05 13:58:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-05 13:58:31,755 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 13:58:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-05 13:58:31,757 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 84 [2024-11-05 13:58:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:31,760 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-05 13:58:31,761 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 13:58:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-05 13:58:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 13:58:31,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:31,762 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 13:58:31,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 13:58:31,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,963 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:31,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 788375522, now seen corresponding path program 1 times [2024-11-05 13:58:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065342243] [2024-11-05 13:58:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 13:58:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:32,142 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 13:58:32,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:32,249 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 13:58:32,250 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065342243] [2024-11-05 13:58:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1065342243] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 13:58:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050374399] [2024-11-05 13:58:32,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:32,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 13:58:32,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:32,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 13:58:32,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:32,252 INFO L87 Difference]: Start difference. First operand 72 states and 95 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 13:58:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:32,314 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2024-11-05 13:58:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 13:58:32,315 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 13:58:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:32,316 INFO L225 Difference]: With dead ends: 126 [2024-11-05 13:58:32,316 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 13:58:32,317 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 13:58:32,317 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 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 13:58:32,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 13:58:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-05 13:58:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 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 13:58:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-11-05 13:58:32,334 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 86 [2024-11-05 13:58:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:32,335 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-11-05 13:58:32,335 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 13:58:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-11-05 13:58:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 13:58:32,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:32,337 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 13:58:32,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:32,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:32,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1039859473, now seen corresponding path program 1 times [2024-11-05 13:58:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738832970] [2024-11-05 13:58:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,543 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:32,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 13:58:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:32,756 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 13:58:32,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:32,858 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 13:58:32,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738832970] [2024-11-05 13:58:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1738832970] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:32,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:32,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 13:58:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385528244] [2024-11-05 13:58:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:32,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:32,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:32,861 INFO L87 Difference]: Start difference. First operand 73 states and 96 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 13:58:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:32,939 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2024-11-05 13:58:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 13:58:32,941 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 13:58:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:32,942 INFO L225 Difference]: With dead ends: 126 [2024-11-05 13:58:32,942 INFO L226 Difference]: Without dead ends: 74 [2024-11-05 13:58:32,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:32,943 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 4 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:32,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 514 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-05 13:58:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2024-11-05 13:58:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 52 states have internal predecessors, (64), 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 13:58:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2024-11-05 13:58:32,954 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 88 [2024-11-05 13:58:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:32,958 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2024-11-05 13:58:32,959 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 13:58:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2024-11-05 13:58:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:58:32,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:32,960 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 13:58:32,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 13:58:33,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:33,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:33,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -596272544, now seen corresponding path program 2 times [2024-11-05 13:58:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391041219] [2024-11-05 13:58:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:33,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:33,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 13:58:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:33,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 13:58:33,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:33,361 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 13:58:33,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:33,435 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 13:58:33,435 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391041219] [2024-11-05 13:58:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1391041219] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:33,436 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-05 13:58:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351031942] [2024-11-05 13:58:33,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:33,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:33,438 INFO L87 Difference]: Start difference. First operand 70 states and 91 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 13:58:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:33,478 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2024-11-05 13:58:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:58:33,479 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 13:58:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:33,480 INFO L225 Difference]: With dead ends: 80 [2024-11-05 13:58:33,480 INFO L226 Difference]: Without dead ends: 78 [2024-11-05 13:58:33,481 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 13:58:33,481 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 6 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 471 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 13:58:33,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 471 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-05 13:58:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-05 13:58:33,497 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 13:58:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2024-11-05 13:58:33,499 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 100 [2024-11-05 13:58:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:33,500 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2024-11-05 13:58:33,500 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 13:58:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2024-11-05 13:58:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:58:33,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:33,502 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 13:58:33,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:33,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:33,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:33,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2105251196, now seen corresponding path program 1 times [2024-11-05 13:58:33,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:33,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56582291] [2024-11-05 13:58:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:33,704 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:33,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:33,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:33,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 13:58:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:33,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 13:58:33,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:33,906 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 13:58:33,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:33,986 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 13:58:33,987 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56582291] [2024-11-05 13:58:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [56582291] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:33,987 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:33,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2024-11-05 13:58:33,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098108880] [2024-11-05 13:58:33,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:33,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-05 13:58:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-05 13:58:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:33,989 INFO L87 Difference]: Start difference. First operand 77 states and 99 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 13:58:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:34,042 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2024-11-05 13:58:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 13:58:34,042 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 13:58:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:34,043 INFO L225 Difference]: With dead ends: 88 [2024-11-05 13:58:34,043 INFO L226 Difference]: Without dead ends: 86 [2024-11-05 13:58:34,044 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 13:58:34,044 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 3 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 539 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 13:58:34,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 539 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-05 13:58:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2024-11-05 13:58:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 58 states have internal predecessors, (69), 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 13:58:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-05 13:58:34,056 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 102 [2024-11-05 13:58:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:34,056 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-05 13:58:34,056 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 13:58:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-05 13:58:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-05 13:58:34,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:34,059 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 13:58:34,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:34,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:34,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:34,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash -237351543, now seen corresponding path program 1 times [2024-11-05 13:58:34,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:34,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070435585] [2024-11-05 13:58:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:34,260 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:34,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:34,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:34,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 13:58:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:34,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:34,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:34,465 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 13:58:34,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:34,543 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 13:58:34,543 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:34,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070435585] [2024-11-05 13:58:34,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2070435585] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:34,543 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2024-11-05 13:58:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021941296] [2024-11-05 13:58:34,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:34,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 13:58:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 13:58:34,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:34,545 INFO L87 Difference]: Start difference. First operand 78 states and 100 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 13:58:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:34,620 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-11-05 13:58:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 13:58:34,620 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 13:58:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:34,621 INFO L225 Difference]: With dead ends: 87 [2024-11-05 13:58:34,622 INFO L226 Difference]: Without dead ends: 85 [2024-11-05 13:58:34,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-05 13:58:34,622 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 7 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:34,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 679 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-05 13:58:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2024-11-05 13:58:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 55 states have internal predecessors, (67), 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 13:58:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2024-11-05 13:58:34,629 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 104 [2024-11-05 13:58:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:34,630 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2024-11-05 13:58:34,630 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 13:58:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2024-11-05 13:58:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-05 13:58:34,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:34,634 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 13:58:34,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 13:58:34,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:34,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:34,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash 81682848, now seen corresponding path program 1 times [2024-11-05 13:58:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961268282] [2024-11-05 13:58:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:34,836 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:34,838 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:34,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 13:58:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:34,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 13:58:34,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:35,088 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 13:58:35,107 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 13:58:35,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:35,229 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 13:58:35,248 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 13:58:39,221 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 13:58:39,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:39,997 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 13:58:39,997 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961268282] [2024-11-05 13:58:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961268282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:39,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-05 13:58:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704892147] [2024-11-05 13:58:39,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:39,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 13:58:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 13:58:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-05 13:58:40,000 INFO L87 Difference]: Start difference. First operand 75 states and 96 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 13:58:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:43,368 INFO L93 Difference]: Finished difference Result 213 states and 280 transitions. [2024-11-05 13:58:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 13:58:43,369 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 13:58:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:43,371 INFO L225 Difference]: With dead ends: 213 [2024-11-05 13:58:43,371 INFO L226 Difference]: Without dead ends: 159 [2024-11-05 13:58:43,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-05 13:58:43,372 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 87 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:43,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 820 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-05 13:58:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-05 13:58:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2024-11-05 13:58:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 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 13:58:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2024-11-05 13:58:43,395 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 106 [2024-11-05 13:58:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:43,395 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2024-11-05 13:58:43,396 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 13:58:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2024-11-05 13:58:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-05 13:58:43,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:43,397 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 13:58:43,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 13:58:43,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:43,598 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:43,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash -929434402, now seen corresponding path program 1 times [2024-11-05 13:58:43,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:43,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161942957] [2024-11-05 13:58:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:43,599 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:43,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:43,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 13:58:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:43,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-05 13:58:43,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:43,800 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 13:58:43,811 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 13:58:43,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:43,883 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 13:58:43,898 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 13:58:50,718 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 13:58:50,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:51,666 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 13:58:51,666 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161942957] [2024-11-05 13:58:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [161942957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:51,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2024-11-05 13:58:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131204677] [2024-11-05 13:58:51,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:51,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 13:58:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 13:58:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-05 13:58:51,672 INFO L87 Difference]: Start difference. First operand 148 states and 194 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 13:58:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:56,892 INFO L93 Difference]: Finished difference Result 323 states and 432 transitions. [2024-11-05 13:58:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-05 13:58:56,893 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 13:58:56,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:56,895 INFO L225 Difference]: With dead ends: 323 [2024-11-05 13:58:56,896 INFO L226 Difference]: Without dead ends: 191 [2024-11-05 13:58:56,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 185 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=368, Invalid=1984, Unknown=0, NotChecked=0, Total=2352 [2024-11-05 13:58:56,899 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 176 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:56,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1064 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-05 13:58:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-05 13:58:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2024-11-05 13:58:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 141 states have internal predecessors, (177), 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 13:58:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 233 transitions. [2024-11-05 13:58:56,941 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 233 transitions. Word has length 106 [2024-11-05 13:58:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:56,941 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 233 transitions. [2024-11-05 13:58:56,941 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 13:58:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 233 transitions. [2024-11-05 13:58:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-05 13:58:56,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:56,942 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 13:58:56,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-05 13:58:57,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:57,143 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:57,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1550306266, now seen corresponding path program 1 times [2024-11-05 13:58:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:57,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420078168] [2024-11-05 13:58:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:57,144 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:57,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:57,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 13:58:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:57,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-05 13:58:57,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:57,389 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 13:58:57,405 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 13:58:57,466 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 13:58:57,466 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 13:58:57,497 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 13:58:57,498 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 13:58:57,714 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 13:58:57,714 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 13:58:57,760 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 13:58:57,761 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 13:59:16,560 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 13:59:16,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:17,735 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 13:59:17,735 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420078168] [2024-11-05 13:59:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [420078168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:17,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:17,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2024-11-05 13:59:17,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545556082] [2024-11-05 13:59:17,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:17,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 13:59:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 13:59:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:59:17,738 INFO L87 Difference]: Start difference. First operand 181 states and 233 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 13:59:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:33,743 INFO L93 Difference]: Finished difference Result 620 states and 866 transitions. [2024-11-05 13:59:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-05 13:59:33,743 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 13:59:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:33,747 INFO L225 Difference]: With dead ends: 620 [2024-11-05 13:59:33,747 INFO L226 Difference]: Without dead ends: 476 [2024-11-05 13:59:33,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=445, Invalid=2525, Unknown=0, NotChecked=0, Total=2970 [2024-11-05 13:59:33,753 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 276 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:33,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1774 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-05 13:59:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-05 13:59:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 339. [2024-11-05 13:59:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 257 states have (on average 1.2996108949416343) internal successors, (334), 265 states have internal predecessors, (334), 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 13:59:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 465 transitions. [2024-11-05 13:59:33,854 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 465 transitions. Word has length 108 [2024-11-05 13:59:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:33,855 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 465 transitions. [2024-11-05 13:59:33,855 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 13:59:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 465 transitions. [2024-11-05 13:59:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-05 13:59:33,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:33,859 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 13:59:33,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 13:59:34,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,064 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:34,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1971997910, now seen corresponding path program 1 times [2024-11-05 13:59:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677358653] [2024-11-05 13:59:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:34,064 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:34,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,066 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:34,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 13:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:34,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 13:59:34,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:34,226 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 13:59:34,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:34,261 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 13:59:34,261 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677358653] [2024-11-05 13:59:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [677358653] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:59:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:59:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 13:59:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186537928] [2024-11-05 13:59:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:34,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 13:59:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 13:59:34,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 13:59:34,263 INFO L87 Difference]: Start difference. First operand 339 states and 465 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 13:59:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:34,341 INFO L93 Difference]: Finished difference Result 515 states and 695 transitions. [2024-11-05 13:59:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 13:59:34,341 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 13:59:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:34,343 INFO L225 Difference]: With dead ends: 515 [2024-11-05 13:59:34,343 INFO L226 Difference]: Without dead ends: 217 [2024-11-05 13:59:34,344 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 13:59:34,345 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 235 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 13:59:34,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 235 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:59:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-05 13:59:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 181. [2024-11-05 13:59:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 141 states have internal predecessors, (170), 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 13:59:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 226 transitions. [2024-11-05 13:59:34,415 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 226 transitions. Word has length 108 [2024-11-05 13:59:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:34,415 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 226 transitions. [2024-11-05 13:59:34,416 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 13:59:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 226 transitions. [2024-11-05 13:59:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-05 13:59:34,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:34,417 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 13:59:34,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:34,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,618 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:34,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash 874238934, now seen corresponding path program 2 times [2024-11-05 13:59:34,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:34,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263660180] [2024-11-05 13:59:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,620 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:34,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-05 13:59:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:34,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-05 13:59:34,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:34,831 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 13:59:34,842 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 13:59:34,901 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 13:59:34,901 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 13:59:34,936 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 13:59:34,937 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 13:59:35,264 INFO L349 Elim1Store]: treesize reduction 36, result has 53.8 percent of original size [2024-11-05 13:59:35,265 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 13:59:35,352 INFO L349 Elim1Store]: treesize reduction 80, result has 24.5 percent of original size [2024-11-05 13:59:35,352 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 13:59:35,889 INFO L349 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2024-11-05 13:59:35,890 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 13:59:35,978 INFO L349 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2024-11-05 13:59:35,978 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