/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 20:46:07,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 20:46:07,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 20:46:07,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 20:46:07,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 20:46:07,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 20:46:07,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 20:46:07,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 20:46:07,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 20:46:07,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 20:46:07,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 20:46:07,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 20:46:07,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 20:46:07,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 20:46:07,721 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 20:46:07,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 20:46:07,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 20:46:07,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 20:46:07,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 20:46:07,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 20:46:07,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 20:46:07,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 20:46:07,726 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 20:46:07,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 20:46:07,727 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 20:46:07,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 20:46:07,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 20:46:07,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 20:46:07,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 20:46:07,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 20:46:07,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 20:46:07,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:46:07,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 20:46:07,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 20:46:07,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 20:46:07,733 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 20:46:07,733 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:07,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 20:46:07,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 20:46:07,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 20:46:07,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 20:46:07,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:07,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 20:46:08,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 20:46:08,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 20:46:08,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 20:46:08,004 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 20:46:08,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-04 20:46:09,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 20:46:09,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 20:46:09,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-04 20:46:09,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053aa10a2/fa82453ff4054eb2868fe8765b39da67/FLAG6e6976b93 [2024-11-04 20:46:09,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053aa10a2/fa82453ff4054eb2868fe8765b39da67 [2024-11-04 20:46:09,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 20:46:09,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 20:46:09,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 20:46:09,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 20:46:09,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 20:46:09,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:46:09" (1/1) ... [2024-11-04 20:46:09,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7033b849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:09, skipping insertion in model container [2024-11-04 20:46:09,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:46:09" (1/1) ... [2024-11-04 20:46:10,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:46:10,383 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_back_harness.i[4494,4507] [2024-11-04 20:46:10,394 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_back_harness.i[4554,4567] [2024-11-04 20:46:10,943 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,020 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,021 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,021 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,030 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,032 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,033 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,033 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,034 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,034 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,035 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,042 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,043 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,045 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,045 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,057 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,058 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,058 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,059 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,060 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,060 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,061 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,061 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,062 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,063 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,063 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,063 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,064 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,064 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,366 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,367 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,367 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,367 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:11,556 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 20:46:11,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:46:11,606 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_back_harness.i[4494,4507] [2024-11-04 20:46:11,606 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_back_harness.i[4554,4567] [2024-11-04 20:46:11,645 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,670 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,671 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,671 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,678 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,679 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,679 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,679 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,680 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,681 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,684 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,685 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,686 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,686 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,694 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,695 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,695 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,696 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,697 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,697 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,698 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,698 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,699 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,699 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,700 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,700 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,700 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,701 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,761 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,761 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,762 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,762 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,814 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:46:11,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:11,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 20:46:11,847 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_back_harness.i[4494,4507] [2024-11-04 20:46:11,848 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_back_harness.i[4554,4567] [2024-11-04 20:46:11,948 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,949 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,949 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,949 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,950 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,960 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,961 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,962 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,963 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,964 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,964 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,964 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:11,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:46:12,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:46:12,242 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-04 20:46:12,256 INFO L204 MainTranslator]: Completed translation [2024-11-04 20:46:12,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12 WrapperNode [2024-11-04 20:46:12,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 20:46:12,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 20:46:12,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 20:46:12,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 20:46:12,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,393 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 136 [2024-11-04 20:46:12,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 20:46:12,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 20:46:12,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 20:46:12,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 20:46:12,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,416 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,455 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 20, 5]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2024-11-04 20:46:12,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 20:46:12,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 20:46:12,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 20:46:12,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 20:46:12,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (1/1) ... [2024-11-04 20:46:12,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:46:12,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 20:46:12,555 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) [2024-11-04 20:46:12,558 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 [2024-11-04 20:46:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2024-11-04 20:46:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2024-11-04 20:46:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 20:46:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 20:46:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:46:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-04 20:46:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-04 20:46:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 20:46:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 20:46:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-04 20:46:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 20:46:12,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 20:46:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 20:46:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 20:46:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 20:46:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-04 20:46:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-04 20:46:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-04 20:46:12,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-04 20:46:12,864 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 20:46:12,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 20:46:13,327 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-04 20:46:13,327 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 20:46:13,350 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 20:46:13,350 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-04 20:46:13,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:46:13 BoogieIcfgContainer [2024-11-04 20:46:13,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 20:46:13,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 20:46:13,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 20:46:13,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 20:46:13,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:46:09" (1/3) ... [2024-11-04 20:46:13,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595c7a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:46:13, skipping insertion in model container [2024-11-04 20:46:13,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:46:12" (2/3) ... [2024-11-04 20:46:13,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595c7a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:46:13, skipping insertion in model container [2024-11-04 20:46:13,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:46:13" (3/3) ... [2024-11-04 20:46:13,358 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2024-11-04 20:46:13,372 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 20:46:13,373 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 20:46:13,462 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 20:46:13,471 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;@10c0fd8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 20:46:13,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 20:46:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-04 20:46:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 20:46:13,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:13,486 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:13,486 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:13,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash -722894815, now seen corresponding path program 1 times [2024-11-04 20:46:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277796525] [2024-11-04 20:46:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:13,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:13,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 20:46:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:13,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 20:46:13,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-04 20:46:13,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 20:46:13,999 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277796525] [2024-11-04 20:46:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [277796525] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:46:14,000 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:46:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 20:46:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180007744] [2024-11-04 20:46:14,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:14,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 20:46:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 20:46:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:46:14,043 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-04 20:46:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:14,094 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-04 20:46:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 20:46:14,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2024-11-04 20:46:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:14,111 INFO L225 Difference]: With dead ends: 188 [2024-11-04 20:46:14,111 INFO L226 Difference]: Without dead ends: 93 [2024-11-04 20:46:14,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:46:14,123 INFO L432 NwaCegarLoop]: 127 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, 127 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 [2024-11-04 20:46:14,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:46:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-04 20:46:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-04 20:46:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-04 20:46:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-04 20:46:14,177 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-04 20:46:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:14,177 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-04 20:46:14,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-04 20:46:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-04 20:46:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 20:46:14,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:14,182 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:14,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-04 20:46:14,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:14,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:14,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash -723996839, now seen corresponding path program 1 times [2024-11-04 20:46:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:14,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200522779] [2024-11-04 20:46:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:14,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:14,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:14,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 20:46:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:14,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 20:46:14,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-04 20:46:14,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-04 20:46:15,109 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200522779] [2024-11-04 20:46:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [200522779] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-04 20:46:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007749643] [2024-11-04 20:46:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:15,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 20:46:15,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 20:46:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 20:46:15,115 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-04 20:46:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:15,234 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-11-04 20:46:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 20:46:15,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2024-11-04 20:46:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:15,239 INFO L225 Difference]: With dead ends: 169 [2024-11-04 20:46:15,240 INFO L226 Difference]: Without dead ends: 95 [2024-11-04 20:46:15,241 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 [2024-11-04 20:46:15,241 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:15,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 20:46:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-04 20:46:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-04 20:46:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 20:46:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2024-11-04 20:46:15,268 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 84 [2024-11-04 20:46:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:15,269 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2024-11-04 20:46:15,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-04 20:46:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2024-11-04 20:46:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-04 20:46:15,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:15,273 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:15,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 20:46:15,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:15,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:15,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2086865941, now seen corresponding path program 1 times [2024-11-04 20:46:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365519469] [2024-11-04 20:46:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:15,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:15,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:15,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:15,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-04 20:46:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:15,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-04 20:46:15,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 20:46:15,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 20:46:16,163 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365519469] [2024-11-04 20:46:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365519469] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:16,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2024-11-04 20:46:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739589129] [2024-11-04 20:46:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:16,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 20:46:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 20:46:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-04 20:46:16,168 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:16,443 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2024-11-04 20:46:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 20:46:16,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 86 [2024-11-04 20:46:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:16,446 INFO L225 Difference]: With dead ends: 176 [2024-11-04 20:46:16,446 INFO L226 Difference]: Without dead ends: 97 [2024-11-04 20:46:16,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-04 20:46:16,451 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 32 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:16,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 681 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:46:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-04 20:46:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-04 20:46:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 20:46:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-11-04 20:46:16,474 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 86 [2024-11-04 20:46:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:16,475 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-11-04 20:46:16,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-11-04 20:46:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-04 20:46:16,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:16,477 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:16,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-04 20:46:16,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:16,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:16,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1429995906, now seen corresponding path program 1 times [2024-11-04 20:46:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792559607] [2024-11-04 20:46:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:16,680 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:16,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:16,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-04 20:46:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:16,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 20:46:16,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 20:46:17,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 20:46:17,417 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792559607] [2024-11-04 20:46:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [792559607] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:17,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:17,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2024-11-04 20:46:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225593592] [2024-11-04 20:46:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:17,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 20:46:17,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:17,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 20:46:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-04 20:46:17,420 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:17,745 INFO L93 Difference]: Finished difference Result 182 states and 241 transitions. [2024-11-04 20:46:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 20:46:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-04 20:46:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:17,749 INFO L225 Difference]: With dead ends: 182 [2024-11-04 20:46:17,749 INFO L226 Difference]: Without dead ends: 102 [2024-11-04 20:46:17,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-04 20:46:17,751 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:17,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 765 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:46:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-04 20:46:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-04 20:46:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 64 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 20:46:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2024-11-04 20:46:17,773 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 88 [2024-11-04 20:46:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:17,774 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2024-11-04 20:46:17,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2024-11-04 20:46:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-04 20:46:17,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:17,780 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:17,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:17,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:17,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:17,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1848432154, now seen corresponding path program 1 times [2024-11-04 20:46:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:17,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512568436] [2024-11-04 20:46:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:17,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:17,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:17,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-04 20:46:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:18,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-04 20:46:18,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 20:46:18,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-04 20:46:18,460 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512568436] [2024-11-04 20:46:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [512568436] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3] total 9 [2024-11-04 20:46:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740276760] [2024-11-04 20:46:18,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 20:46:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 20:46:18,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-04 20:46:18,463 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:18,733 INFO L93 Difference]: Finished difference Result 179 states and 238 transitions. [2024-11-04 20:46:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 20:46:18,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 89 [2024-11-04 20:46:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:18,736 INFO L225 Difference]: With dead ends: 179 [2024-11-04 20:46:18,737 INFO L226 Difference]: Without dead ends: 102 [2024-11-04 20:46:18,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-04 20:46:18,738 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 34 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:18,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 657 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:46:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-04 20:46:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2024-11-04 20:46:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 65 states have internal predecessors, (77), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 20:46:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2024-11-04 20:46:18,759 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 89 [2024-11-04 20:46:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:18,760 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2024-11-04 20:46:18,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 20:46:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2024-11-04 20:46:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-04 20:46:18,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:18,762 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:18,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-04 20:46:18,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:18,963 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:18,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2017477272, now seen corresponding path program 1 times [2024-11-04 20:46:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:18,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202414100] [2024-11-04 20:46:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:18,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:18,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:18,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:18,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-04 20:46:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:19,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 20:46:19,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-04 20:46:19,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-04 20:46:19,625 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202414100] [2024-11-04 20:46:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1202414100] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-04 20:46:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094614403] [2024-11-04 20:46:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:19,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 20:46:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 20:46:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 20:46:19,627 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-04 20:46:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:19,703 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2024-11-04 20:46:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 20:46:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2024-11-04 20:46:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:19,706 INFO L225 Difference]: With dead ends: 178 [2024-11-04 20:46:19,706 INFO L226 Difference]: Without dead ends: 100 [2024-11-04 20:46:19,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 20:46:19,708 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:19,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 20:46:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-04 20:46:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-04 20:46:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.21875) internal successors, (78), 66 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 20:46:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-04 20:46:19,730 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 97 [2024-11-04 20:46:19,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:19,730 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-04 20:46:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-04 20:46:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-04 20:46:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 20:46:19,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:19,732 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:19,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-04 20:46:19,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:19,933 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:19,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -63854059, now seen corresponding path program 1 times [2024-11-04 20:46:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470307187] [2024-11-04 20:46:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:19,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:19,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-04 20:46:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:20,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-04 20:46:20,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:24,920 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64))))) is different from true [2024-11-04 20:46:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 20:46:25,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-04 20:46:25,568 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:25,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470307187] [2024-11-04 20:46:25,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [470307187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:46:25,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:46:25,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2024-11-04 20:46:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276633200] [2024-11-04 20:46:25,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:46:25,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 20:46:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 20:46:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=261, Unknown=1, NotChecked=32, Total=342 [2024-11-04 20:46:25,570 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 19 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-04 20:46:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:27,026 INFO L93 Difference]: Finished difference Result 221 states and 300 transitions. [2024-11-04 20:46:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-04 20:46:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) Word has length 99 [2024-11-04 20:46:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:27,029 INFO L225 Difference]: With dead ends: 221 [2024-11-04 20:46:27,030 INFO L226 Difference]: Without dead ends: 142 [2024-11-04 20:46:27,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=84, Invalid=471, Unknown=1, NotChecked=44, Total=600 [2024-11-04 20:46:27,032 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 86 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:27,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1381 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 498 Invalid, 0 Unknown, 326 Unchecked, 1.1s Time] [2024-11-04 20:46:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-04 20:46:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2024-11-04 20:46:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.25) internal successors, (100), 82 states have internal predecessors, (100), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 20:46:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2024-11-04 20:46:27,058 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 99 [2024-11-04 20:46:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:27,058 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2024-11-04 20:46:27,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-04 20:46:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2024-11-04 20:46:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 20:46:27,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:27,060 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:27,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:27,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:27,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:27,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1897720599, now seen corresponding path program 1 times [2024-11-04 20:46:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11159555] [2024-11-04 20:46:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:27,262 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:27,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:27,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-04 20:46:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:27,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 20:46:27,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-04 20:46:27,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-04 20:46:27,557 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11159555] [2024-11-04 20:46:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [11159555] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:27,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 20:46:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875473463] [2024-11-04 20:46:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:27,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 20:46:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 20:46:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 20:46:27,559 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 20:46:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:27,596 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2024-11-04 20:46:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 20:46:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-04 20:46:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:27,598 INFO L225 Difference]: With dead ends: 214 [2024-11-04 20:46:27,598 INFO L226 Difference]: Without dead ends: 117 [2024-11-04 20:46:27,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 20:46:27,600 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:27,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:46:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-04 20:46:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2024-11-04 20:46:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.2375) internal successors, (99), 82 states have internal predecessors, (99), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 20:46:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2024-11-04 20:46:27,621 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 99 [2024-11-04 20:46:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:27,622 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2024-11-04 20:46:27,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 20:46:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2024-11-04 20:46:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 20:46:27,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:27,623 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:27,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:27,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:27,824 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1836546919, now seen corresponding path program 1 times [2024-11-04 20:46:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336759846] [2024-11-04 20:46:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:27,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:27,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:27,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:27,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-04 20:46:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:28,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-04 20:46:28,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-04 20:46:28,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-04 20:46:28,101 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:28,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336759846] [2024-11-04 20:46:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [336759846] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:46:28,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:46:28,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-04 20:46:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050239921] [2024-11-04 20:46:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:46:28,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-04 20:46:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-04 20:46:28,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-04 20:46:28,104 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 20:46:28,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:28,151 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2024-11-04 20:46:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-04 20:46:28,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-04 20:46:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:28,158 INFO L225 Difference]: With dead ends: 213 [2024-11-04 20:46:28,158 INFO L226 Difference]: Without dead ends: 116 [2024-11-04 20:46:28,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-04 20:46:28,162 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:28,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:46:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-04 20:46:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-04 20:46:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 20:46:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-11-04 20:46:28,180 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 99 [2024-11-04 20:46:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-11-04 20:46:28,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 20:46:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-11-04 20:46:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 20:46:28,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:28,182 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:28,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-04 20:46:28,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:28,382 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:28,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash -913140813, now seen corresponding path program 1 times [2024-11-04 20:46:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376177119] [2024-11-04 20:46:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:28,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:28,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-04 20:46:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:28,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-04 20:46:28,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 20:46:30,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:46:32,081 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-04 20:46:32,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-04 20:46:32,104 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-04 20:46:32,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-04 20:46:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-04 20:46:32,173 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:46:32,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376177119] [2024-11-04 20:46:32,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [376177119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 20:46:32,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 20:46:32,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2024-11-04 20:46:32,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45146527] [2024-11-04 20:46:32,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 20:46:32,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 20:46:32,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:46:32,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 20:46:32,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-04 20:46:32,176 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-04 20:46:36,925 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] [2024-11-04 20:46:41,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 20:46:45,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 20:46:49,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 20:46:53,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 20:46:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:46:58,122 INFO L93 Difference]: Finished difference Result 272 states and 345 transitions. [2024-11-04 20:46:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-04 20:46:58,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 100 [2024-11-04 20:46:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:46:58,126 INFO L225 Difference]: With dead ends: 272 [2024-11-04 20:46:58,126 INFO L226 Difference]: Without dead ends: 181 [2024-11-04 20:46:58,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 175 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2024-11-04 20:46:58,128 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 154 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 82 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2024-11-04 20:46:58,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 988 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 523 Invalid, 5 Unknown, 0 Unchecked, 24.5s Time] [2024-11-04 20:46:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-04 20:46:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-04 20:46:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-04 20:46:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2024-11-04 20:46:58,147 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 100 [2024-11-04 20:46:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:46:58,148 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2024-11-04 20:46:58,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-04 20:46:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2024-11-04 20:46:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 20:46:58,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:46:58,149 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:46:58,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-04 20:46:58,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:58,350 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:46:58,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:46:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1722487439, now seen corresponding path program 1 times [2024-11-04 20:46:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:46:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752522558] [2024-11-04 20:46:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:46:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:46:58,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:46:58,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:46:58,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-04 20:46:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:46:58,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-04 20:46:58,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:46:59,147 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 11 treesize of output 7 [2024-11-04 20:46:59,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 20:46:59,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-04 20:47:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-04 20:47:01,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:47:02,816 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-04 20:47:02,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 103 [2024-11-04 20:47:02,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-04 20:47:02,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 97 [2024-11-04 20:47:02,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2024-11-04 20:47:03,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-04 20:47:03,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-04 20:47:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-04 20:47:03,430 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:47:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752522558] [2024-11-04 20:47:03,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1752522558] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:47:03,430 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:47:03,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2024-11-04 20:47:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116446592] [2024-11-04 20:47:03,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:47:03,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-04 20:47:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:47:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-04 20:47:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-04 20:47:03,432 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 19 states have internal predecessors, (99), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 20:47:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:47:09,411 INFO L93 Difference]: Finished difference Result 428 states and 536 transitions. [2024-11-04 20:47:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-04 20:47:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 19 states have internal predecessors, (99), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-04 20:47:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:47:09,414 INFO L225 Difference]: With dead ends: 428 [2024-11-04 20:47:09,414 INFO L226 Difference]: Without dead ends: 338 [2024-11-04 20:47:09,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 168 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2024-11-04 20:47:09,415 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 80 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-04 20:47:09,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 974 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-04 20:47:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-04 20:47:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 188. [2024-11-04 20:47:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 141 states have internal predecessors, (165), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (34), 29 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-04 20:47:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 230 transitions. [2024-11-04 20:47:09,441 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 230 transitions. Word has length 100 [2024-11-04 20:47:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:47:09,441 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 230 transitions. [2024-11-04 20:47:09,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 19 states have internal predecessors, (99), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 20:47:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 230 transitions. [2024-11-04 20:47:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 20:47:09,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:47:09,443 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:47:09,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-04 20:47:09,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:09,643 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:47:09,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:47:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2115514449, now seen corresponding path program 1 times [2024-11-04 20:47:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:47:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3342837] [2024-11-04 20:47:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:47:09,644 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:47:09,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:47:09,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:47:09,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-04 20:47:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:47:10,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-04 20:47:10,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:47:10,343 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-04 20:47:10,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 19 [2024-11-04 20:47:10,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-04 20:47:10,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-04 20:47:14,634 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (select .cse0 (select .cse0 (_ bv24 64)))))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse2 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (let ((.cse1 (select .cse2 (_ bv24 64)))) (and (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64) .cse1) .cse2) (= (_ bv16 64) (select v_DerPreprocessor_2 .cse1))))))) is different from true [2024-11-04 20:47:22,929 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (select .cse0 (select .cse0 (_ bv24 64)))))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse2 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (let ((.cse1 (select .cse2 (_ bv24 64)))) (and (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64) .cse1) .cse2) (= (_ bv16 64) (select v_DerPreprocessor_2 .cse1))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse3 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (select .cse3 (select .cse3 (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64)))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse4)) (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64) .cse4) .cse5))))))) is different from true [2024-11-04 20:47:33,816 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64)) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse0)) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) v_aws_linked_list_back_~list.base_BEFORE_CALL_25) (_ bv24 64) .cse0)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64))) (= (_ bv16 64) (let ((.cse2 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25))) (select .cse2 (select .cse2 (_ bv24 64)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25) (_ bv24 64))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse3 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (select .cse3 (select .cse3 (_ bv24 64)))))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64) .cse4) .cse5) (= (_ bv16 64) (select v_DerPreprocessor_2 .cse4))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse6 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (select .cse6 (select .cse6 (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64)))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse8 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (let ((.cse7 (select .cse8 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse7)) (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64) .cse7) .cse8))))))) is different from true [2024-11-04 20:47:43,359 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_26 (_ BitVec 64))) (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_26))) (and (= (select .cse0 (select .cse0 (_ bv24 64))) (_ bv16 64)) (= (_ bv0 64) (select .cse0 (_ bv8 64))) (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_26) (_ bv8 64)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_26 (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_26))) (and (= (_ bv24 64) (select .cse1 (_ bv24 64))) (= (_ bv0 64) (select .cse1 (_ bv8 64))) (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_26) (_ bv8 64)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_26 (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_26))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse2)) (= (store (select (store (store |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_26 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) v_aws_linked_list_back_~list.base_BEFORE_CALL_26) (_ bv24 64) .cse2) .cse3)))) (= (_ bv0 64) (select .cse3 (_ bv8 64))) (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_back_~list.base_BEFORE_CALL_26) (_ bv8 64))))))) (or (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64)) (v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse4)) (= .cse5 (store (select (store (store |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) v_aws_linked_list_back_~list.base_BEFORE_CALL_25) (_ bv24 64) .cse4)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64))) (= (_ bv16 64) (let ((.cse6 (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25))) (select .cse6 (select .cse6 (_ bv24 64)))))) (exists ((v_aws_linked_list_back_~list.base_BEFORE_CALL_25 (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_back_~list.base_BEFORE_CALL_25) (_ bv24 64))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64)))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse7 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (select .cse7 (select .cse7 (_ bv24 64)))))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse9 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|))) (let ((.cse8 (select .cse9 (_ bv24 64)))) (and (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_32|) (_ bv24 64) .cse8) .cse9) (= (_ bv16 64) (select v_DerPreprocessor_2 .cse8))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv16 64) (let ((.cse10 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (select .cse10 (select .cse10 (_ bv24 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64))) (= (_ bv24 64) (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64)))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| (_ BitVec 64)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| (_ BitVec 64))) (let ((.cse12 (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|))) (let ((.cse11 (select .cse12 (_ bv24 64)))) (and (= (_ bv16 64) (select v_DerPreprocessor_2 .cse11)) (= (store (select (store (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base_BEFORE_CALL_33|) (_ bv24 64) .cse11) .cse12))))))) is different from true