/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:00:55,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:00:55,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:00:55,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:00:55,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:00:55,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:00:55,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:00:55,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:00:55,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:00:55,505 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:00:55,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:00:55,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:00:55,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:00:55,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:00:55,506 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:00:55,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:00:55,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:00:55,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:00:55,507 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:00:55,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:00:55,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:00:55,508 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:00:55,508 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:00:55,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:00:55,508 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:00:55,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:00:55,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:00:55,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:00:55,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:00:55,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:00:55,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:00:55,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:55,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:00:55,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:00:55,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:00:55,510 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:00:55,511 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:00:55,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:00:55,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:00:55,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:00:55,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:00:55,515 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:00:55,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:00:55,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:00:55,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:00:55,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:00:55,699 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:00:55,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i [2024-11-05 14:00:56,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:00:57,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:00:57,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i [2024-11-05 14:00:57,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4eda21e/525ad8e032d0415ca40cb38b680ba1b1/FLAG8ef755c4a [2024-11-05 14:00:57,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4eda21e/525ad8e032d0415ca40cb38b680ba1b1 [2024-11-05 14:00:57,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:00:57,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:00:57,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:57,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:00:57,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:00:57,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:57" (1/1) ... [2024-11-05 14:00:57,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5109cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:57, skipping insertion in model container [2024-11-05 14:00:57,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:00:57" (1/1) ... [2024-11-05 14:00:57,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:57,688 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2024-11-05 14:00:57,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2024-11-05 14:00:58,038 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,097 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,098 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,098 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,109 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,110 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,110 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,111 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,111 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,112 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,113 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,117 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,118 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,120 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,120 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,127 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,128 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,128 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,129 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,130 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,130 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,130 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,131 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,132 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,132 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,132 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,133 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,133 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,135 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,330 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,330 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,330 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,331 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,411 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 14:00:58,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:58,438 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 14:00:58,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:00:58,471 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2024-11-05 14:00:58,472 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2024-11-05 14:00:58,496 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,508 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,508 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,509 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,512 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,513 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,515 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,515 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,516 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,516 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,519 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,520 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,520 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,520 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,521 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,521 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,521 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,521 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,522 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,522 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,522 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,523 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,523 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,523 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,560 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,561 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,593 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 14:00:58,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:58,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:00:58,620 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2024-11-05 14:00:58,620 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2024-11-05 14:00:58,661 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,661 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,661 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,661 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,662 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,666 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,666 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,667 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,667 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,668 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,668 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,669 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,669 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 14:00:58,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:00:58,861 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 14:00:58,870 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:00:58,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58 WrapperNode [2024-11-05 14:00:58,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:00:58,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:58,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:00:58,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:00:58,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,954 INFO L138 Inliner]: procedures = 687, calls = 1038, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 138 [2024-11-05 14:00:58,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:00:58,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:00:58,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:00:58,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:00:58,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,984 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 5, 14]. 67 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 14:00:58,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:58,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:59,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:00:59,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:00:59,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:00:59,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:00:59,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (1/1) ... [2024-11-05 14:00:59,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:00:59,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:00:59,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 14:00:59,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 14:00:59,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 14:00:59,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:59,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 14:00:59,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:00:59,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:00:59,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:00:59,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 14:00:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 14:00:59,048 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 14:00:59,242 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:00:59,243 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:00:59,500 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-05 14:00:59,500 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:00:59,508 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:00:59,509 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 14:00:59,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:59 BoogieIcfgContainer [2024-11-05 14:00:59,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:00:59,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:00:59,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:00:59,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:00:59,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:00:57" (1/3) ... [2024-11-05 14:00:59,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299926b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:59, skipping insertion in model container [2024-11-05 14:00:59,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:00:58" (2/3) ... [2024-11-05 14:00:59,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299926b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:00:59, skipping insertion in model container [2024-11-05 14:00:59,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:00:59" (3/3) ... [2024-11-05 14:00:59,515 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2024-11-05 14:00:59,525 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:00:59,525 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:00:59,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:00:59,575 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;@6e0d32f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:00:59,575 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:00:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-05 14:00:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:00:59,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:59,588 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:59,589 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:59,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2107862704, now seen corresponding path program 1 times [2024-11-05 14:00:59,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879105173] [2024-11-05 14:00:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:59,602 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:59,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:00:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:59,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:00:59,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 14:00:59,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 14:00:59,851 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:59,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879105173] [2024-11-05 14:00:59,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [879105173] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:59,851 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:59,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:00:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858571483] [2024-11-05 14:00:59,853 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:59,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:00:59,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:59,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:00:59,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:59,876 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 14:00:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:59,898 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2024-11-05 14:00:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:00:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-05 14:00:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:59,903 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:00:59,904 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 14:00:59,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:00:59,909 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:59,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 14:00:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-05 14:00:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 14:00:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-11-05 14:00:59,942 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2024-11-05 14:00:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:59,942 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-11-05 14:00:59,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 14:00:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-11-05 14:00:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 14:00:59,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:59,948 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:59,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 14:01:00,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:00,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:00,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 900796622, now seen corresponding path program 1 times [2024-11-05 14:01:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545069468] [2024-11-05 14:01:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:00,150 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:00,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:00,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:01:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:00,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:00,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:00,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:00,398 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:00,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545069468] [2024-11-05 14:01:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [545069468] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:00,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:00,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560246734] [2024-11-05 14:01:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:00,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:00,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:00,401 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:00,453 INFO L93 Difference]: Finished difference Result 114 states and 152 transitions. [2024-11-05 14:01:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:00,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-05 14:01:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:00,457 INFO L225 Difference]: With dead ends: 114 [2024-11-05 14:01:00,457 INFO L226 Difference]: Without dead ends: 65 [2024-11-05 14:01:00,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:00,458 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:00,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-05 14:01:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-05 14:01:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2024-11-05 14:01:00,466 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 68 [2024-11-05 14:01:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:00,467 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-05 14:01:00,467 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 14:01:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2024-11-05 14:01:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 14:01:00,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:00,473 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:00,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 14:01:00,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:00,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:00,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 577933322, now seen corresponding path program 1 times [2024-11-05 14:01:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425728086] [2024-11-05 14:01:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:00,675 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:00,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:00,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:00,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:01:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:00,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:00,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:00,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:00,926 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425728086] [2024-11-05 14:01:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1425728086] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:00,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:00,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263500511] [2024-11-05 14:01:00,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:00,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:00,927 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:00,971 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2024-11-05 14:01:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2024-11-05 14:01:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:00,972 INFO L225 Difference]: With dead ends: 119 [2024-11-05 14:01:00,972 INFO L226 Difference]: Without dead ends: 68 [2024-11-05 14:01:00,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:00,973 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:00,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-05 14:01:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-05 14:01:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2024-11-05 14:01:00,980 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 70 [2024-11-05 14:01:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:00,980 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2024-11-05 14:01:00,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2024-11-05 14:01:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 14:01:00,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:00,981 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:00,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 14:01:01,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:01,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:01,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash -34807881, now seen corresponding path program 1 times [2024-11-05 14:01:01,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:01,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302202440] [2024-11-05 14:01:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:01,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:01,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:01:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:01,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:01,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:01:01,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 14:01:01,393 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302202440] [2024-11-05 14:01:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1302202440] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:01,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:01,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719900356] [2024-11-05 14:01:01,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:01,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:01,395 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:01,456 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2024-11-05 14:01:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-05 14:01:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:01,457 INFO L225 Difference]: With dead ends: 123 [2024-11-05 14:01:01,458 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:01:01,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:01,459 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:01,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 508 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:01:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-05 14:01:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 49 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2024-11-05 14:01:01,464 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 72 [2024-11-05 14:01:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:01,465 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2024-11-05 14:01:01,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 14:01:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2024-11-05 14:01:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 14:01:01,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:01,465 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:01,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:01,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:01,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:01,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash 387052583, now seen corresponding path program 1 times [2024-11-05 14:01:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42234094] [2024-11-05 14:01:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:01,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:01,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:01:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:01,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:01,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 14:01:01,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 14:01:01,861 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42234094] [2024-11-05 14:01:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [42234094] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 7 [2024-11-05 14:01:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795498507] [2024-11-05 14:01:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:01,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:01,863 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:01:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:01,951 INFO L93 Difference]: Finished difference Result 128 states and 177 transitions. [2024-11-05 14:01:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:01,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-05 14:01:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:01,952 INFO L225 Difference]: With dead ends: 128 [2024-11-05 14:01:01,952 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:01:01,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:01,953 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 25 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:01,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 230 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:01:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:01:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-11-05 14:01:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 51 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:01:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-05 14:01:01,968 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 73 [2024-11-05 14:01:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:01,968 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-05 14:01:01,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 14:01:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-05 14:01:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 14:01:01,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:01,969 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:01,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:01:02,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,174 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:02,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1911369352, now seen corresponding path program 1 times [2024-11-05 14:01:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159729872] [2024-11-05 14:01:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:02,175 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:02,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:02,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:01:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:02,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 14:01:02,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 14:01:02,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 14:01:02,357 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:02,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159729872] [2024-11-05 14:01:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [159729872] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:02,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:02,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 14:01:02,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790482863] [2024-11-05 14:01:02,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:02,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:01:02,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:02,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:01:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:02,359 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:02,390 INFO L93 Difference]: Finished difference Result 119 states and 160 transitions. [2024-11-05 14:01:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:01:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-05 14:01:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:02,391 INFO L225 Difference]: With dead ends: 119 [2024-11-05 14:01:02,391 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:01:02,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:01:02,392 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:02,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:01:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-05 14:01:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 14:01:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-05 14:01:02,399 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 84 [2024-11-05 14:01:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:02,399 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-05 14:01:02,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-05 14:01:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 14:01:02,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:02,400 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:02,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:02,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,603 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:02,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1945074884, now seen corresponding path program 1 times [2024-11-05 14:01:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122670471] [2024-11-05 14:01:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:02,604 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:02,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:02,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:01:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:02,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 14:01:02,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 14:01:02,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-05 14:01:02,863 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122670471] [2024-11-05 14:01:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [122670471] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 14:01:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155081182] [2024-11-05 14:01:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:02,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:01:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:01:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:02,864 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:02,906 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2024-11-05 14:01:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 14:01:02,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-05 14:01:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:02,908 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:01:02,908 INFO L226 Difference]: Without dead ends: 74 [2024-11-05 14:01:02,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:01:02,909 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:02,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-05 14:01:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-05 14:01:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 14:01:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-05 14:01:02,921 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 86 [2024-11-05 14:01:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:02,921 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-05 14:01:02,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-05 14:01:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 14:01:02,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:02,922 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:02,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:01:03,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:03,125 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:03,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -110525007, now seen corresponding path program 1 times [2024-11-05 14:01:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189674185] [2024-11-05 14:01:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:03,126 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:03,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:03,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:01:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:03,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 14:01:03,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 14:01:03,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-05 14:01:03,359 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:03,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189674185] [2024-11-05 14:01:03,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1189674185] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:03,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:03,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 14:01:03,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131716136] [2024-11-05 14:01:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:03,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:01:03,361 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:03,422 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-11-05 14:01:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2024-11-05 14:01:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:03,423 INFO L225 Difference]: With dead ends: 124 [2024-11-05 14:01:03,423 INFO L226 Difference]: Without dead ends: 73 [2024-11-05 14:01:03,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:01:03,424 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:03,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 507 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:01:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-05 14:01:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-05 14:01:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 51 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 14:01:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2024-11-05 14:01:03,431 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 88 [2024-11-05 14:01:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:03,431 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2024-11-05 14:01:03,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 14:01:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2024-11-05 14:01:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 14:01:03,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:03,432 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:03,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 14:01:03,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:03,634 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:03,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1438193982, now seen corresponding path program 2 times [2024-11-05 14:01:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744354550] [2024-11-05 14:01:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:03,635 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:03,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:03,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:03,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:01:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:03,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 14:01:03,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:03,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:03,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:03,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:01:03,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:03,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 14:01:07,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 14:01:07,769 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:07,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744354550] [2024-11-05 14:01:07,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744354550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:07,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-05 14:01:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946498498] [2024-11-05 14:01:07,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:07,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 14:01:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 14:01:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-05 14:01:07,771 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 18 states have internal predecessors, (120), 10 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-05 14:01:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:10,509 INFO L93 Difference]: Finished difference Result 196 states and 264 transitions. [2024-11-05 14:01:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:01:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 18 states have internal predecessors, (120), 10 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 100 [2024-11-05 14:01:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:10,512 INFO L225 Difference]: With dead ends: 196 [2024-11-05 14:01:10,512 INFO L226 Difference]: Without dead ends: 147 [2024-11-05 14:01:10,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-05 14:01:10,513 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 109 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:10,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 804 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-05 14:01:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-05 14:01:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 136. [2024-11-05 14:01:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.32) internal successors, (132), 103 states have internal predecessors, (132), 24 states have call successors, (24), 10 states have call predecessors, (24), 11 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2024-11-05 14:01:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2024-11-05 14:01:10,535 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 100 [2024-11-05 14:01:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:10,535 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2024-11-05 14:01:10,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 18 states have internal predecessors, (120), 10 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-05 14:01:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2024-11-05 14:01:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 14:01:10,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:10,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:10,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 14:01:10,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:10,740 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:10,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2047426688, now seen corresponding path program 1 times [2024-11-05 14:01:10,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:10,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544860049] [2024-11-05 14:01:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:10,740 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:10,742 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:10,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:01:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:10,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-05 14:01:10,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:10,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:10,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:01:10,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:01:10,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:10,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 14:01:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 27 proven. 26 refuted. 7 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 14:01:38,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 14:01:39,671 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544860049] [2024-11-05 14:01:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1544860049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:39,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2024-11-05 14:01:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129208261] [2024-11-05 14:01:39,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:39,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 14:01:39,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 14:01:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=638, Unknown=3, NotChecked=0, Total=756 [2024-11-05 14:01:39,673 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-05 14:01:44,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:01:51,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:01:54,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:01:59,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:04,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:08,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:12,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 14:02:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:02:12,943 INFO L93 Difference]: Finished difference Result 299 states and 408 transitions. [2024-11-05 14:02:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-05 14:02:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 100 [2024-11-05 14:02:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:02:12,945 INFO L225 Difference]: With dead ends: 299 [2024-11-05 14:02:12,945 INFO L226 Difference]: Without dead ends: 179 [2024-11-05 14:02:12,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 172 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=393, Invalid=2054, Unknown=3, NotChecked=0, Total=2450 [2024-11-05 14:02:12,947 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 80 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2024-11-05 14:02:12,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 959 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 646 Invalid, 6 Unknown, 0 Unchecked, 30.7s Time] [2024-11-05 14:02:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-05 14:02:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 169. [2024-11-05 14:02:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.3) internal successors, (169), 133 states have internal predecessors, (169), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2024-11-05 14:02:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2024-11-05 14:02:12,975 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 100 [2024-11-05 14:02:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:02:12,975 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2024-11-05 14:02:12,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-05 14:02:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2024-11-05 14:02:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 14:02:12,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:02:12,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:02:12,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-05 14:02:13,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:13,177 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:02:13,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:02:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash -28904196, now seen corresponding path program 1 times [2024-11-05 14:02:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:02:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762448882] [2024-11-05 14:02:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:02:13,178 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:02:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:02:13,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:02:13,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:02:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:02:13,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-05 14:02:13,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:02:13,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:02:13,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 14:02:13,391 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 14:02:13,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 14:02:13,430 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 14:02:13,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 14:02:13,627 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 14:02:13,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 14:02:13,652 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 14:02:13,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 14:02:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 14:02:31,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:02:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-05 14:02:32,242 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:02:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762448882] [2024-11-05 14:02:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [762448882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:02:32,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:02:32,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2024-11-05 14:02:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145877336] [2024-11-05 14:02:32,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:02:32,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 14:02:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:02:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 14:02:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-05 14:02:32,244 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 26 states have internal predecessors, (138), 11 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18)