/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 'cvc5 --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_begin_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:27:17,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:27:17,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:27:17,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:27:17,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:27:18,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:27:18,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:27:18,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:27:18,012 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:27:18,013 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:27:18,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:27:18,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:27:18,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:27:18,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:27:18,014 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:27:18,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:27:18,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:27:18,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:27:18,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:27:18,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:27:18,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:27:18,017 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:27:18,017 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:27:18,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:27:18,017 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:27:18,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:27:18,018 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:27:18,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:27:18,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:27:18,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:27:18,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:27:18,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:18,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:27:18,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:27:18,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:27:18,019 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:27:18,019 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:27:18,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:27:18,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:27:18,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:27:18,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:27:18,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:18,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:27:18,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:27:18,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:27:18,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:27:18,218 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:27:18,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i [2024-11-05 02:27:19,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:27:19,702 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:27:19,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i [2024-11-05 02:27:19,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca36fff9/70da66ca226f4212ae2096f63a0fa788/FLAGa9bc1eac3 [2024-11-05 02:27:19,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca36fff9/70da66ca226f4212ae2096f63a0fa788 [2024-11-05 02:27:19,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:27:19,956 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:27:19,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:19,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:27:19,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:27:19,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:19" (1/1) ... [2024-11-05 02:27:19,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df5bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:19, skipping insertion in model container [2024-11-05 02:27:19,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:19" (1/1) ... [2024-11-05 02:27:20,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:20,263 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-05 02:27:20,269 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-05 02:27:20,670 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,746 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,747 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,747 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,757 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,760 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,760 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,761 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,761 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,761 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,763 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,766 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,767 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,768 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,770 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,777 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,778 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,779 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,779 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,781 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,782 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,782 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,782 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,785 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,786 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,786 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,786 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,786 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,787 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,028 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,028 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,029 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,029 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,122 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:21,160 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:27:21,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:21,193 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-05 02:27:21,193 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-05 02:27:21,220 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,231 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,232 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,232 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,240 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,240 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,241 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,241 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,241 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,242 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,242 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,243 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,243 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,244 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,248 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,252 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,252 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,252 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,252 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,253 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,253 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,254 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,254 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,259 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,264 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,264 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,264 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,264 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,265 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,302 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,302 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,303 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,303 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,331 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:21,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:21,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:27:21,356 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-05 02:27:21,357 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-05 02:27:21,399 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,400 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,400 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,400 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,401 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,406 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,407 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,408 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,409 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,411 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,411 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:21,588 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:27:21,595 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:27:21,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21 WrapperNode [2024-11-05 02:27:21,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:21,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:21,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:27:21,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:27:21,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,697 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-05 02:27:21,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:21,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:27:21,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:27:21,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:27:21,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,745 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 02:27:21,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:27:21,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:27:21,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:27:21,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:27:21,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:27:21,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:27:21,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:27:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:27:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:27:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:27:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:27:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:27:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:27:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:27:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:27:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:27:22,050 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:27:22,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:27:22,312 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-05 02:27:22,313 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:27:22,328 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:27:22,328 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 02:27:22,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:22 BoogieIcfgContainer [2024-11-05 02:27:22,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:27:22,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:27:22,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:27:22,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:27:22,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:27:19" (1/3) ... [2024-11-05 02:27:22,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485d0067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:22, skipping insertion in model container [2024-11-05 02:27:22,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (2/3) ... [2024-11-05 02:27:22,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485d0067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:22, skipping insertion in model container [2024-11-05 02:27:22,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:22" (3/3) ... [2024-11-05 02:27:22,337 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2024-11-05 02:27:22,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:27:22,349 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:27:22,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:27:22,401 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;@71c1a177, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:27:22,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:27:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-05 02:27:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:27:22,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:22,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:22,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:22,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-05 02:27:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197308685] [2024-11-05 02:27:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:22,425 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:22,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:22,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:27:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:22,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:27:22,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:27:22,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:27:22,720 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:22,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197308685] [2024-11-05 02:27:22,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1197308685] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:22,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:22,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:27:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758072981] [2024-11-05 02:27:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:22,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:27:22,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:27:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:27:22,745 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:27:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:22,763 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-05 02:27:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:27:22,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-05 02:27:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:22,771 INFO L225 Difference]: With dead ends: 130 [2024-11-05 02:27:22,771 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 02:27:22,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:27:22,777 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:22,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:27:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 02:27:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-05 02:27:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 02:27:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-05 02:27:22,817 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-05 02:27:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:22,818 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-05 02:27:22,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:27:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-05 02:27:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:27:22,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:22,820 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:22,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-05 02:27:23,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:23,024 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:23,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-05 02:27:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017230348] [2024-11-05 02:27:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:23,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:23,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:23,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:27:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:23,187 WARN L253 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-05 02:27:23,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:23,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:23,400 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:23,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:23,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:23,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:23,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:23,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:27:24,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:27:25,508 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017230348] [2024-11-05 02:27:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1017230348] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-05 02:27:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879667502] [2024-11-05 02:27:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:25,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:27:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:27:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:27:25,511 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-05 02:27:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:27,324 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2024-11-05 02:27:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:27:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2024-11-05 02:27:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:27,328 INFO L225 Difference]: With dead ends: 170 [2024-11-05 02:27:27,328 INFO L226 Difference]: Without dead ends: 120 [2024-11-05 02:27:27,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:27:27,330 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:27,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 487 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 02:27:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-05 02:27:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-05 02:27:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 86 states have internal predecessors, (109), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-05 02:27:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 158 transitions. [2024-11-05 02:27:27,354 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 158 transitions. Word has length 68 [2024-11-05 02:27:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:27,354 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 158 transitions. [2024-11-05 02:27:27,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-05 02:27:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 158 transitions. [2024-11-05 02:27:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:27:27,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:27,357 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:27,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-05 02:27:27,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:27,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:27,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2024-11-05 02:27:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:27,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885696478] [2024-11-05 02:27:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:27,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:27,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:27:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:27,702 WARN L253 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:27:27,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:27,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:27,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:27,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-05 02:27:27,882 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:27,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:27,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:28,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:27:28,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:27:29,526 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885696478] [2024-11-05 02:27:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [885696478] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:29,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:29,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-05 02:27:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914160035] [2024-11-05 02:27:29,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:29,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 02:27:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 02:27:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:27:29,528 INFO L87 Difference]: Start difference. First operand 118 states and 158 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:31,069 INFO L93 Difference]: Finished difference Result 177 states and 237 transitions. [2024-11-05 02:27:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 02:27:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2024-11-05 02:27:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:31,072 INFO L225 Difference]: With dead ends: 177 [2024-11-05 02:27:31,072 INFO L226 Difference]: Without dead ends: 125 [2024-11-05 02:27:31,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:27:31,073 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 75 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:31,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 420 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-05 02:27:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-05 02:27:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2024-11-05 02:27:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 89 states have internal predecessors, (111), 24 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (27), 22 states have call predecessors, (27), 22 states have call successors, (27) [2024-11-05 02:27:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-11-05 02:27:31,090 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 70 [2024-11-05 02:27:31,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:31,090 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-11-05 02:27:31,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-11-05 02:27:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:27:31,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:31,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:31,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-05 02:27:31,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:31,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:31,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash -172209942, now seen corresponding path program 1 times [2024-11-05 02:27:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:31,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992983655] [2024-11-05 02:27:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:31,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:31,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:31,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 02:27:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:31,428 WARN L253 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-05 02:27:31,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:31,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:31,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:27:31,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:31,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:31,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:31,712 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:27:31,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:27:31,738 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:27:31,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2024-11-05 02:27:31,745 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 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:27:31,776 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:27:31,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:27:32,069 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:27:32,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 106 [2024-11-05 02:27:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:27:32,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-11-05 02:27:32,141 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-05 02:27:32,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 75 [2024-11-05 02:27:32,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 46 [2024-11-05 02:27:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:27:34,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:27:35,383 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992983655] [2024-11-05 02:27:35,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [992983655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:27:35,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:27:35,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2024-11-05 02:27:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529530541] [2024-11-05 02:27:35,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:27:35,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:27:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:27:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:27:35,385 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:39,552 INFO L93 Difference]: Finished difference Result 237 states and 317 transitions. [2024-11-05 02:27:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:27:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2024-11-05 02:27:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:39,555 INFO L225 Difference]: With dead ends: 237 [2024-11-05 02:27:39,556 INFO L226 Difference]: Without dead ends: 186 [2024-11-05 02:27:39,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:27:39,557 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 110 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:39,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1272 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-05 02:27:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-05 02:27:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 127. [2024-11-05 02:27:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 94 states have internal predecessors, (115), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-05 02:27:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 169 transitions. [2024-11-05 02:27:39,577 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 169 transitions. Word has length 70 [2024-11-05 02:27:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:39,577 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 169 transitions. [2024-11-05 02:27:39,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 169 transitions. [2024-11-05 02:27:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:27:39,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:39,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:39,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-05 02:27:39,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:39,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:39,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2024-11-05 02:27:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85099927] [2024-11-05 02:27:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:39,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:39,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:39,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-05 02:27:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:39,907 WARN L253 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-05 02:27:39,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:39,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:39,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:40,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:40,028 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:40,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:40,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-05 02:27:40,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:27:41,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:27:41,937 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85099927] [2024-11-05 02:27:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [85099927] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:41,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:41,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2024-11-05 02:27:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185215155] [2024-11-05 02:27:41,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:41,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:27:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:27:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:27:41,939 INFO L87 Difference]: Start difference. First operand 127 states and 169 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:44,284 INFO L93 Difference]: Finished difference Result 195 states and 262 transitions. [2024-11-05 02:27:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 02:27:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-05 02:27:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:44,286 INFO L225 Difference]: With dead ends: 195 [2024-11-05 02:27:44,286 INFO L226 Difference]: Without dead ends: 140 [2024-11-05 02:27:44,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:27:44,287 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 66 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:44,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 613 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-05 02:27:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-05 02:27:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2024-11-05 02:27:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 96 states have internal predecessors, (118), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-05 02:27:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2024-11-05 02:27:44,307 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 72 [2024-11-05 02:27:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:44,308 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2024-11-05 02:27:44,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2024-11-05 02:27:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:27:44,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:44,309 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:44,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-05 02:27:44,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:44,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:44,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1064398778, now seen corresponding path program 1 times [2024-11-05 02:27:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432199501] [2024-11-05 02:27:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:44,511 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:44,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:44,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-05 02:27:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:44,662 WARN L253 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-05 02:27:44,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:44,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:44,684 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 6 treesize of output 5 [2024-11-05 02:27:44,694 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 8 treesize of output 1 [2024-11-05 02:27:44,848 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 22 treesize of output 1 [2024-11-05 02:27:44,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:44,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:44,955 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:27:44,958 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:44,971 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:27:44,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:27:45,003 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:27:45,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:27:45,031 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:27:45,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:27:45,315 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:27:45,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:27:45,342 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:27:45,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:27:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:27:47,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:27:48,028 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432199501] [2024-11-05 02:27:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432199501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:27:48,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:27:48,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2024-11-05 02:27:48,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855925693] [2024-11-05 02:27:48,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:27:48,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:27:48,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:27:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:27:48,029 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:27:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:50,521 INFO L93 Difference]: Finished difference Result 255 states and 342 transitions. [2024-11-05 02:27:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:27:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 72 [2024-11-05 02:27:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:50,523 INFO L225 Difference]: With dead ends: 255 [2024-11-05 02:27:50,523 INFO L226 Difference]: Without dead ends: 203 [2024-11-05 02:27:50,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:27:50,525 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 162 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:50,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 699 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-05 02:27:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-05 02:27:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 132. [2024-11-05 02:27:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 99 states have internal predecessors, (120), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:27:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2024-11-05 02:27:50,550 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 72 [2024-11-05 02:27:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:50,550 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2024-11-05 02:27:50,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:27:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2024-11-05 02:27:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 02:27:50,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:50,551 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:50,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-05 02:27:50,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:50,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:50,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2024-11-05 02:27:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186719986] [2024-11-05 02:27:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:50,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:50,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:50,755 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:50,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-05 02:27:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:50,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-05 02:27:50,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:50,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:50,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:50,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:51,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:51,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:51,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 02:27:51,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:27:51,744 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186719986] [2024-11-05 02:27:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [186719986] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:51,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:51,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3] total 11 [2024-11-05 02:27:51,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718782982] [2024-11-05 02:27:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:51,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 02:27:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:51,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 02:27:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-05 02:27:51,746 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:52,877 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2024-11-05 02:27:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 02:27:52,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2024-11-05 02:27:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:52,878 INFO L225 Difference]: With dead ends: 198 [2024-11-05 02:27:52,878 INFO L226 Difference]: Without dead ends: 141 [2024-11-05 02:27:52,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-05 02:27:52,879 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 90 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:52,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 345 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-05 02:27:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-05 02:27:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2024-11-05 02:27:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 100 states have internal predecessors, (121), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:27:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 177 transitions. [2024-11-05 02:27:52,902 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 177 transitions. Word has length 73 [2024-11-05 02:27:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:52,903 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 177 transitions. [2024-11-05 02:27:52,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:27:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 177 transitions. [2024-11-05 02:27:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-05 02:27:52,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:52,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:52,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-05 02:27:53,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:53,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:53,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash 956833811, now seen corresponding path program 1 times [2024-11-05 02:27:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001689553] [2024-11-05 02:27:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:53,109 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:53,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-05 02:27:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:53,246 WARN L253 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-05 02:27:53,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:53,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:53,286 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 8 treesize of output 1 [2024-11-05 02:27:53,292 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 6 treesize of output 5 [2024-11-05 02:27:53,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:53,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:53,548 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:27:53,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:27:53,578 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:27:53,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:27:53,607 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:27:53,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:27:53,620 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:53,873 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:27:53,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:27:53,896 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:27:53,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:27:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:27:56,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:27:56,902 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001689553] [2024-11-05 02:27:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001689553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:27:56,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:27:56,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2024-11-05 02:27:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429785124] [2024-11-05 02:27:56,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:27:56,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-05 02:27:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-05 02:27:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:27:56,903 INFO L87 Difference]: Start difference. First operand 133 states and 177 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:28:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:00,740 INFO L93 Difference]: Finished difference Result 277 states and 376 transitions. [2024-11-05 02:28:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-05 02:28:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 74 [2024-11-05 02:28:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:00,742 INFO L225 Difference]: With dead ends: 277 [2024-11-05 02:28:00,742 INFO L226 Difference]: Without dead ends: 222 [2024-11-05 02:28:00,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:28:00,743 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 220 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:00,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 688 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-05 02:28:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-05 02:28:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 135. [2024-11-05 02:28:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 102 states have internal predecessors, (124), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:28:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2024-11-05 02:28:00,769 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 74 [2024-11-05 02:28:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:00,769 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2024-11-05 02:28:00,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:28:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2024-11-05 02:28:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-05 02:28:00,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:00,770 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:00,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:00,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:00,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:00,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1124158908, now seen corresponding path program 1 times [2024-11-05 02:28:00,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:00,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129666382] [2024-11-05 02:28:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:00,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:00,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:00,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-05 02:28:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:01,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-05 02:28:01,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:01,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:01,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:01,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:01,253 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:01,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:01,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:01,359 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:01,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:01,388 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:01,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:01,415 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:01,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2024-11-05 02:28:01,424 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:28:01,428 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:01,683 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:01,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 164 treesize of output 114 [2024-11-05 02:28:01,731 INFO L349 Elim1Store]: treesize reduction 50, result has 41.2 percent of original size [2024-11-05 02:28:01,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 104 [2024-11-05 02:28:01,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-05 02:28:01,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-05 02:28:01,809 INFO L349 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2024-11-05 02:28:01,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 51 [2024-11-05 02:28:01,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:01,823 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 38 treesize of output 41 [2024-11-05 02:28:01,833 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 7 treesize of output 5 [2024-11-05 02:28:01,869 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:01,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 02:28:03,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-05 02:28:03,596 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129666382] [2024-11-05 02:28:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [129666382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:03,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:03,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3] total 14 [2024-11-05 02:28:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689669825] [2024-11-05 02:28:03,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:03,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 02:28:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:03,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 02:28:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-05 02:28:03,597 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:28:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:06,901 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2024-11-05 02:28:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 02:28:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 75 [2024-11-05 02:28:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:06,903 INFO L225 Difference]: With dead ends: 270 [2024-11-05 02:28:06,903 INFO L226 Difference]: Without dead ends: 213 [2024-11-05 02:28:06,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:28:06,904 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 138 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:06,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 913 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-05 02:28:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-05 02:28:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 76. [2024-11-05 02:28:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 02:28:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-11-05 02:28:06,925 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 75 [2024-11-05 02:28:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:06,925 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-11-05 02:28:06,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:28:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-11-05 02:28:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-05 02:28:06,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:06,926 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:06,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-05 02:28:07,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:07,129 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:07,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2024-11-05 02:28:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:07,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591689902] [2024-11-05 02:28:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:07,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:07,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:07,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:07,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-05 02:28:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:07,283 WARN L253 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-05 02:28:07,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:07,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:07,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:07,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:07,372 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:07,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:07,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:07,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:28:09,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:28:09,769 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591689902] [2024-11-05 02:28:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [591689902] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:09,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:09,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2024-11-05 02:28:09,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823035367] [2024-11-05 02:28:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:09,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:28:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:28:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:28:09,771 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-05 02:28:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:13,066 INFO L93 Difference]: Finished difference Result 210 states and 281 transitions. [2024-11-05 02:28:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:28:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 81 [2024-11-05 02:28:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:13,068 INFO L225 Difference]: With dead ends: 210 [2024-11-05 02:28:13,068 INFO L226 Difference]: Without dead ends: 152 [2024-11-05 02:28:13,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:28:13,069 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 72 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:13,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 675 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-05 02:28:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-05 02:28:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2024-11-05 02:28:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 104 states have internal predecessors, (126), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:28:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2024-11-05 02:28:13,105 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 81 [2024-11-05 02:28:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:13,105 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2024-11-05 02:28:13,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-05 02:28:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2024-11-05 02:28:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 02:28:13,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:13,106 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:13,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:13,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:13,307 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:13,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash 431382673, now seen corresponding path program 1 times [2024-11-05 02:28:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054056639] [2024-11-05 02:28:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:13,310 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-05 02:28:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:13,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-05 02:28:13,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:13,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:13,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:13,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:13,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-05 02:28:13,544 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:13,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:13,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:13,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:28:14,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:15,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 734 treesize of output 726 [2024-11-05 02:28:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:28:15,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:15,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054056639] [2024-11-05 02:28:15,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2054056639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:15,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:15,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-05 02:28:15,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856490861] [2024-11-05 02:28:15,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:15,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:28:15,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:15,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:28:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:15,859 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:28:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:20,032 INFO L93 Difference]: Finished difference Result 233 states and 319 transitions. [2024-11-05 02:28:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 02:28:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 83 [2024-11-05 02:28:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:20,035 INFO L225 Difference]: With dead ends: 233 [2024-11-05 02:28:20,035 INFO L226 Difference]: Without dead ends: 174 [2024-11-05 02:28:20,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-05 02:28:20,036 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 121 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:20,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1162 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-05 02:28:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-05 02:28:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2024-11-05 02:28:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 100 states have (on average 1.3) internal successors, (130), 106 states have internal predecessors, (130), 25 states have call successors, (25), 10 states have call predecessors, (25), 14 states have return successors, (33), 23 states have call predecessors, (33), 23 states have call successors, (33) [2024-11-05 02:28:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2024-11-05 02:28:20,091 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 83 [2024-11-05 02:28:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:20,091 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2024-11-05 02:28:20,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:28:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2024-11-05 02:28:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 02:28:20,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:20,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:20,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-05 02:28:20,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:20,293 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:20,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947066, now seen corresponding path program 1 times [2024-11-05 02:28:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:20,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125943937] [2024-11-05 02:28:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:20,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:20,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-05 02:28:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:20,473 WARN L253 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-05 02:28:20,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:20,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:20,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:20,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:20,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:20,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:20,709 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:20,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:20,726 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:28:20,731 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:20,759 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:20,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:20,797 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:20,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2024-11-05 02:28:21,042 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:21,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:21,086 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:21,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:28:25,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:28:26,137 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125943937] [2024-11-05 02:28:26,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2125943937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:26,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:26,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7] total 25 [2024-11-05 02:28:26,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182459665] [2024-11-05 02:28:26,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:26,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:28:26,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:26,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:28:26,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:26,139 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:28:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:33,099 INFO L93 Difference]: Finished difference Result 287 states and 389 transitions. [2024-11-05 02:28:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-05 02:28:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 83 [2024-11-05 02:28:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:33,101 INFO L225 Difference]: With dead ends: 287 [2024-11-05 02:28:33,101 INFO L226 Difference]: Without dead ends: 228 [2024-11-05 02:28:33,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:28:33,102 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:33,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1687 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-05 02:28:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-05 02:28:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2024-11-05 02:28:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.297029702970297) internal successors, (131), 107 states have internal predecessors, (131), 25 states have call successors, (25), 10 states have call predecessors, (25), 14 states have return successors, (33), 23 states have call predecessors, (33), 23 states have call successors, (33) [2024-11-05 02:28:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2024-11-05 02:28:33,149 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 83 [2024-11-05 02:28:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:33,149 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2024-11-05 02:28:33,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:28:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2024-11-05 02:28:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 02:28:33,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:33,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:33,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:33,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:33,352 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:33,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash -233275002, now seen corresponding path program 1 times [2024-11-05 02:28:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:33,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656905593] [2024-11-05 02:28:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:33,352 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:33,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:33,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-05 02:28:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:33,528 WARN L253 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-05 02:28:33,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:33,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:33,592 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:33,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:33,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:33,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:33,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:33,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 02:28:36,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 02:28:37,190 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656905593] [2024-11-05 02:28:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1656905593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:37,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:37,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 6] total 26 [2024-11-05 02:28:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581480169] [2024-11-05 02:28:37,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:37,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 02:28:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 02:28:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:28:37,192 INFO L87 Difference]: Start difference. First operand 141 states and 189 transitions. Second operand has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:28:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:42,082 INFO L93 Difference]: Finished difference Result 265 states and 359 transitions. [2024-11-05 02:28:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-05 02:28:42,082 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 84 [2024-11-05 02:28:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:42,083 INFO L225 Difference]: With dead ends: 265 [2024-11-05 02:28:42,083 INFO L226 Difference]: Without dead ends: 160 [2024-11-05 02:28:42,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 02:28:42,084 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 69 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:42,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 874 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-05 02:28:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-05 02:28:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 145. [2024-11-05 02:28:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 111 states have internal predecessors, (133), 25 states have call successors, (25), 10 states have call predecessors, (25), 16 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-05 02:28:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2024-11-05 02:28:42,139 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 84 [2024-11-05 02:28:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:42,139 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2024-11-05 02:28:42,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:28:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2024-11-05 02:28:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 02:28:42,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:42,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:42,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-05 02:28:42,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:42,340 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:42,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 788375522, now seen corresponding path program 1 times [2024-11-05 02:28:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560038071] [2024-11-05 02:28:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:42,341 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:42,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:42,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:42,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-05 02:28:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:42,525 WARN L253 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-05 02:28:42,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:42,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:42,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:42,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:42,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:42,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:28:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 02:28:45,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-05 02:28:46,509 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560038071] [2024-11-05 02:28:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560038071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:46,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:46,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 28 [2024-11-05 02:28:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518324138] [2024-11-05 02:28:46,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:46,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 02:28:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:46,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 02:28:46,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:28:46,511 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 28 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:28:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:51,093 INFO L93 Difference]: Finished difference Result 286 states and 381 transitions. [2024-11-05 02:28:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-05 02:28:51,094 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 86 [2024-11-05 02:28:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:51,095 INFO L225 Difference]: With dead ends: 286 [2024-11-05 02:28:51,095 INFO L226 Difference]: Without dead ends: 159 [2024-11-05 02:28:51,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:28:51,096 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 84 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:51,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1368 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-05 02:28:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-05 02:28:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 145. [2024-11-05 02:28:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 111 states have internal predecessors, (130), 25 states have call successors, (25), 10 states have call predecessors, (25), 16 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-05 02:28:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2024-11-05 02:28:51,158 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 86 [2024-11-05 02:28:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:51,158 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2024-11-05 02:28:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:28:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2024-11-05 02:28:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 02:28:51,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:51,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:51,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-05 02:28:51,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:51,360 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:51,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1794999292, now seen corresponding path program 1 times [2024-11-05 02:28:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966269917] [2024-11-05 02:28:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:51,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:51,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:51,362 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:51,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-05 02:28:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:51,561 WARN L253 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-05 02:28:51,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:51,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:51,580 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 8 treesize of output 1 [2024-11-05 02:28:51,590 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 6 treesize of output 5 [2024-11-05 02:28:51,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:51,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:51,760 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 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:51,846 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:51,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:51,864 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:51,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:51,892 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:51,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:52,157 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:52,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:52,180 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 02:28:59,627 INFO L311 TraceCheckSpWp]: Computing backward predicates...