/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 13:59:30,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 13:59:30,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 13:59:30,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 13:59:30,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 13:59:30,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 13:59:30,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 13:59:30,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 13:59:30,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 13:59:30,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 13:59:30,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 13:59:30,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 13:59:30,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 13:59:30,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 13:59:30,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 13:59:30,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 13:59:30,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 13:59:30,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 13:59:30,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 13:59:30,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 13:59:30,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 13:59:30,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 13:59:30,986 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 13:59:30,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 13:59:30,986 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 13:59:30,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 13:59:30,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 13:59:30,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 13:59:30,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 13:59:30,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 13:59:30,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 13:59:30,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:59:30,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 13:59:30,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 13:59:30,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 13:59:30,988 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 13:59:30,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 13:59:30,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 13:59:30,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 13:59:30,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 13:59:30,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 13:59:30,993 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 13:59:31,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 13:59:31,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 13:59:31,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 13:59:31,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 13:59:31,220 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 13:59:31,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 13:59:32,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 13:59:32,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 13:59:32,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 13:59:32,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b885e68/2dba8212e1834276878332543e371bb6/FLAGff522e6a0 [2024-11-05 13:59:33,015 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b885e68/2dba8212e1834276878332543e371bb6 [2024-11-05 13:59:33,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 13:59:33,019 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 13:59:33,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 13:59:33,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 13:59:33,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 13:59:33,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:59:33" (1/1) ... [2024-11-05 13:59:33,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f08ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:33, skipping insertion in model container [2024-11-05 13:59:33,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:59:33" (1/1) ... [2024-11-05 13:59:33,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:59:33,323 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_next_harness.i[4494,4507] [2024-11-05 13:59:33,330 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_next_harness.i[4554,4567] [2024-11-05 13:59:33,766 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 13:59:33,833 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,833 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,834 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,839 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,841 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,841 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,842 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,842 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,842 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,843 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,845 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,845 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,849 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,849 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,857 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,858 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,858 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,858 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,859 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,860 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,860 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,860 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,861 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,862 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,862 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,862 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:33,862 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:33,863 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,123 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,124 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,124 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,125 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,228 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:59:34,273 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 13:59:34,295 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:59:34,300 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_next_harness.i[4494,4507] [2024-11-05 13:59:34,300 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_next_harness.i[4554,4567] [2024-11-05 13:59:34,322 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,344 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,346 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,347 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,347 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,347 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,347 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,348 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,349 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,349 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,350 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,353 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,357 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,357 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,358 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,358 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,360 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,360 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,361 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,361 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,362 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,364 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,364 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,364 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,364 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,364 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,408 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,408 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,409 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,409 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,439 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:59:34,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:59:34,452 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 13:59:34,466 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_next_harness.i[4494,4507] [2024-11-05 13:59:34,468 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_next_harness.i[4554,4567] [2024-11-05 13:59:34,505 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,506 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,506 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,506 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,507 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,512 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:59:34,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:59:34,763 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 13:59:34,773 INFO L204 MainTranslator]: Completed translation [2024-11-05 13:59:34,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34 WrapperNode [2024-11-05 13:59:34,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 13:59:34,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 13:59:34,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 13:59:34,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 13:59:34,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,859 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2024-11-05 13:59:34,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 13:59:34,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 13:59:34,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 13:59:34,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 13:59:34,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,891 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 4, 5, 6]. 35 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-11-05 13:59:34,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 13:59:34,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 13:59:34,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 13:59:34,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 13:59:34,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (1/1) ... [2024-11-05 13:59:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:59:34,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 13:59:34,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 13:59:34,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 13:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 13:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 13:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 13:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 13:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 13:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 13:59:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 13:59:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:59:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:59:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 13:59:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 13:59:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 13:59:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 13:59:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 13:59:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 13:59:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-05 13:59:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:59:34,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:59:35,223 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 13:59:35,226 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 13:59:35,393 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-05 13:59:35,393 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 13:59:35,405 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 13:59:35,405 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-05 13:59:35,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:59:35 BoogieIcfgContainer [2024-11-05 13:59:35,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 13:59:35,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 13:59:35,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 13:59:35,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 13:59:35,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:59:33" (1/3) ... [2024-11-05 13:59:35,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a236f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:59:35, skipping insertion in model container [2024-11-05 13:59:35,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:59:34" (2/3) ... [2024-11-05 13:59:35,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a236f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:59:35, skipping insertion in model container [2024-11-05 13:59:35,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:59:35" (3/3) ... [2024-11-05 13:59:35,414 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2024-11-05 13:59:35,426 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 13:59:35,426 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 13:59:35,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 13:59:35,478 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;@79d198e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 13:59:35,478 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 13:59:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 13:59:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 13:59:35,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:35,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:35,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:35,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 401849526, now seen corresponding path program 1 times [2024-11-05 13:59:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:35,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416191455] [2024-11-05 13:59:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:35,502 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:35,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:35,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:35,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 13:59:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:35,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 13:59:35,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:35,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 13:59:35,702 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416191455] [2024-11-05 13:59:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1416191455] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:35,703 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:35,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 13:59:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742599628] [2024-11-05 13:59:35,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:35,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 13:59:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 13:59:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:59:35,727 INFO L87 Difference]: Start difference. First operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:59:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:35,744 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2024-11-05 13:59:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 13:59:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-05 13:59:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:35,751 INFO L225 Difference]: With dead ends: 94 [2024-11-05 13:59:35,751 INFO L226 Difference]: Without dead ends: 45 [2024-11-05 13:59:35,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:59:35,757 INFO L432 NwaCegarLoop]: 61 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, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:35,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:59:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-05 13:59:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-05 13:59:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 13:59:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-05 13:59:35,786 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2024-11-05 13:59:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:35,787 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-05 13:59:35,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 13:59:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-05 13:59:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 13:59:35,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:35,789 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:35,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 13:59:35,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:35,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:35,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash -619218828, now seen corresponding path program 1 times [2024-11-05 13:59:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856733215] [2024-11-05 13:59:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:35,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:35,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 13:59:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:36,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-05 13:59:36,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:36,179 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 13:59:36,184 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 11 treesize of output 7 [2024-11-05 13:59:36,192 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 19 treesize of output 11 [2024-11-05 13:59:36,203 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 19 treesize of output 11 [2024-11-05 13:59:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 13:59:37,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:38,741 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856733215] [2024-11-05 13:59:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [856733215] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:59:38,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:59:38,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2024-11-05 13:59:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242335646] [2024-11-05 13:59:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:38,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 13:59:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 13:59:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2024-11-05 13:59:38,745 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-05 13:59:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:40,633 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-05 13:59:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 13:59:40,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-05 13:59:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:40,636 INFO L225 Difference]: With dead ends: 60 [2024-11-05 13:59:40,636 INFO L226 Difference]: Without dead ends: 58 [2024-11-05 13:59:40,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-05 13:59:40,637 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:40,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 291 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 13:59:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-05 13:59:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-11-05 13:59:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 13:59:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-11-05 13:59:40,648 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 28 [2024-11-05 13:59:40,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:40,648 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-11-05 13:59:40,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-05 13:59:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-11-05 13:59:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 13:59:40,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:40,649 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:40,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 13:59:40,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:40,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:40,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1428565454, now seen corresponding path program 1 times [2024-11-05 13:59:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822683148] [2024-11-05 13:59:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:40,853 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:40,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:40,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:40,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 13:59:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:40,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-05 13:59:40,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:40,960 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 11 treesize of output 7 [2024-11-05 13:59:40,965 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 13:59:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 13:59:41,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:42,280 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822683148] [2024-11-05 13:59:42,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1822683148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:42,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:42,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-05 13:59:42,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475677431] [2024-11-05 13:59:42,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:42,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-05 13:59:42,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-05 13:59:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-05 13:59:42,282 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-05 13:59:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:43,859 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2024-11-05 13:59:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-05 13:59:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2024-11-05 13:59:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:43,862 INFO L225 Difference]: With dead ends: 117 [2024-11-05 13:59:43,862 INFO L226 Difference]: Without dead ends: 67 [2024-11-05 13:59:43,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2024-11-05 13:59:43,864 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 140 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:43,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 317 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-05 13:59:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-05 13:59:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2024-11-05 13:59:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.170731707317073) internal successors, (48), 43 states have internal predecessors, (48), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 13:59:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-05 13:59:43,878 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 28 [2024-11-05 13:59:43,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:43,878 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-05 13:59:43,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 5 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-05 13:59:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-05 13:59:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 13:59:43,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:43,879 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:43,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 13:59:44,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:44,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1821592464, now seen corresponding path program 1 times [2024-11-05 13:59:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:44,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612916480] [2024-11-05 13:59:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:44,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 13:59:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:44,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-05 13:59:44,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:44,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:44,323 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612916480] [2024-11-05 13:59:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1612916480] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:44,323 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:44,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-05 13:59:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764996564] [2024-11-05 13:59:44,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:44,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 13:59:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 13:59:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:59:44,324 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 13:59:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:44,407 INFO L93 Difference]: Finished difference Result 128 states and 156 transitions. [2024-11-05 13:59:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:59:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2024-11-05 13:59:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:44,410 INFO L225 Difference]: With dead ends: 128 [2024-11-05 13:59:44,410 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 13:59:44,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:59:44,411 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 5 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:44,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 195 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:59:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 13:59:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2024-11-05 13:59:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 13:59:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-05 13:59:44,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 28 [2024-11-05 13:59:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:44,427 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-05 13:59:44,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 13:59:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-05 13:59:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 13:59:44,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:44,431 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:44,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 13:59:44,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:44,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash -239457674, now seen corresponding path program 1 times [2024-11-05 13:59:44,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:44,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966444053] [2024-11-05 13:59:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:44,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 13:59:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:44,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-05 13:59:44,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:44,727 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 19 treesize of output 11 [2024-11-05 13:59:44,733 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 13:59:44,737 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 11 treesize of output 7 [2024-11-05 13:59:44,743 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 19 treesize of output 11 [2024-11-05 13:59:46,179 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-05 13:59:46,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 87 [2024-11-05 13:59:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:46,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 13:59:53,324 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966444053] [2024-11-05 13:59:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [966444053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:53,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:53,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2024-11-05 13:59:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959917977] [2024-11-05 13:59:53,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:53,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-05 13:59:53,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-05 13:59:53,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=886, Unknown=1, NotChecked=0, Total=992 [2024-11-05 13:59:53,326 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 32 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 10 states have call successors, (12), 4 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-05 14:00:07,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-05 14:00:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:08,790 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-05 14:00:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-05 14:00:08,791 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 10 states have call successors, (12), 4 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 42 [2024-11-05 14:00:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:08,792 INFO L225 Difference]: With dead ends: 73 [2024-11-05 14:00:08,792 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:00:08,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=191, Invalid=1530, Unknown=1, NotChecked=0, Total=1722 [2024-11-05 14:00:08,793 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:08,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 393 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 672 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2024-11-05 14:00:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:00:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-05 14:00:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:00:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-11-05 14:00:08,804 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 42 [2024-11-05 14:00:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:08,804 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-11-05 14:00:08,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 10 states have call successors, (12), 4 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-05 14:00:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-11-05 14:00:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 14:00:08,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:08,805 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:08,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:00:09,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:09,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:09,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:09,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1048804300, now seen corresponding path program 1 times [2024-11-05 14:00:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:09,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858559356] [2024-11-05 14:00:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:09,007 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:09,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:09,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:09,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:00:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:09,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 14:00:09,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:09,090 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 19 treesize of output 11 [2024-11-05 14:00:09,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 14:00:09,110 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 19 treesize of output 11 [2024-11-05 14:00:09,118 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 15 treesize of output 1 [2024-11-05 14:00:09,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-05 14:00:09,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-05 14:00:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 14:00:10,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 14:00:15,381 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:15,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858559356] [2024-11-05 14:00:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858559356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:15,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:15,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2024-11-05 14:00:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265077728] [2024-11-05 14:00:15,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:15,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-05 14:00:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-05 14:00:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2024-11-05 14:00:15,383 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 7 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-05 14:00:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:20,300 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2024-11-05 14:00:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-05 14:00:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 7 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 42 [2024-11-05 14:00:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:20,301 INFO L225 Difference]: With dead ends: 115 [2024-11-05 14:00:20,301 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:00:20,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=215, Invalid=1507, Unknown=0, NotChecked=0, Total=1722 [2024-11-05 14:00:20,303 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 64 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:20,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 344 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-05 14:00:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:00:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-11-05 14:00:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 51 states have internal predecessors, (55), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-05 14:00:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-11-05 14:00:20,318 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 42 [2024-11-05 14:00:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:20,318 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-11-05 14:00:20,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 7 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-05 14:00:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-11-05 14:00:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 14:00:20,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:20,319 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:20,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 14:00:20,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:20,520 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:20,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1441831310, now seen corresponding path program 1 times [2024-11-05 14:00:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772842011] [2024-11-05 14:00:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:20,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:20,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:00:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:20,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-05 14:00:20,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:20,608 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 11 treesize of output 7 [2024-11-05 14:00:20,614 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 14:00:21,073 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 16 treesize of output 8 [2024-11-05 14:00:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 14:00:21,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 14:00:21,696 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772842011] [2024-11-05 14:00:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1772842011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:21,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2024-11-05 14:00:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284778761] [2024-11-05 14:00:21,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:21,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-05 14:00:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-05 14:00:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-05 14:00:21,697 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-05 14:00:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:24,048 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2024-11-05 14:00:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 14:00:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 42 [2024-11-05 14:00:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:24,049 INFO L225 Difference]: With dead ends: 127 [2024-11-05 14:00:24,050 INFO L226 Difference]: Without dead ends: 77 [2024-11-05 14:00:24,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 14:00:24,051 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 77 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:24,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 319 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-05 14:00:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-05 14:00:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2024-11-05 14:00:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 14:00:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2024-11-05 14:00:24,066 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 42 [2024-11-05 14:00:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:24,067 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2024-11-05 14:00:24,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-05 14:00:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2024-11-05 14:00:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-05 14:00:24,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:24,068 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:24,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-05 14:00:24,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:24,268 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:24,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1432152549, now seen corresponding path program 1 times [2024-11-05 14:00:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74846034] [2024-11-05 14:00:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:24,269 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:24,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:24,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:24,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:00:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:24,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-05 14:00:24,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:24,352 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 14:00:24,356 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 11 treesize of output 7 [2024-11-05 14:00:24,689 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 15 treesize of output 7 [2024-11-05 14:00:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 14:00:24,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 14:00:24,908 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74846034] [2024-11-05 14:00:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [74846034] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:00:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:00:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-05 14:00:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236376874] [2024-11-05 14:00:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 14:00:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 14:00:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-05 14:00:24,909 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 14:00:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:25,090 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-05 14:00:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:25,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-05 14:00:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:25,092 INFO L225 Difference]: With dead ends: 73 [2024-11-05 14:00:25,092 INFO L226 Difference]: Without dead ends: 71 [2024-11-05 14:00:25,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-05 14:00:25,093 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 3 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:25,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 237 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:00:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-05 14:00:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-05 14:00:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 14:00:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-05 14:00:25,112 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 48 [2024-11-05 14:00:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:25,112 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-05 14:00:25,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 14:00:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-05 14:00:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 14:00:25,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:25,113 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1] [2024-11-05 14:00:25,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 14:00:25,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:25,314 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:25,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1836428547, now seen corresponding path program 1 times [2024-11-05 14:00:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:25,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103512729] [2024-11-05 14:00:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:25,315 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:25,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:25,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:00:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:25,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-05 14:00:25,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:25,420 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 14:00:25,424 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 14:00:25,437 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 11 treesize of output 7 [2024-11-05 14:00:25,446 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 19 treesize of output 11 [2024-11-05 14:00:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 14:00:27,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 14:00:29,700 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103512729] [2024-11-05 14:00:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1103512729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:29,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2024-11-05 14:00:29,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835532317] [2024-11-05 14:00:29,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:29,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 14:00:29,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 14:00:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-05 14:00:29,702 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 28 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 14:00:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:35,897 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2024-11-05 14:00:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-05 14:00:35,898 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 63 [2024-11-05 14:00:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:35,899 INFO L225 Difference]: With dead ends: 82 [2024-11-05 14:00:35,899 INFO L226 Difference]: Without dead ends: 80 [2024-11-05 14:00:35,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2024-11-05 14:00:35,900 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 41 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:35,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 527 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-05 14:00:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-05 14:00:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-11-05 14:00:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:00:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2024-11-05 14:00:35,921 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 63 [2024-11-05 14:00:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:35,921 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2024-11-05 14:00:35,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 14:00:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2024-11-05 14:00:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 14:00:35,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:35,922 INFO L215 NwaCegarLoop]: trace histogram [4, 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 14:00:35,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 14:00:36,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:36,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:36,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1027081921, now seen corresponding path program 1 times [2024-11-05 14:00:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892806542] [2024-11-05 14:00:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:36,124 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:36,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:36,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:36,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:00:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:36,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-05 14:00:36,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:36,231 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 14:00:36,253 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 11 treesize of output 7 [2024-11-05 14:00:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 14:00:38,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 14:00:39,424 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892806542] [2024-11-05 14:00:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1892806542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:39,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2024-11-05 14:00:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572495948] [2024-11-05 14:00:39,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:39,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 14:00:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 14:00:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-05 14:00:39,426 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 5 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 14:00:41,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:41,144 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2024-11-05 14:00:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:00:41,145 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 5 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 63 [2024-11-05 14:00:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:41,146 INFO L225 Difference]: With dead ends: 106 [2024-11-05 14:00:41,146 INFO L226 Difference]: Without dead ends: 79 [2024-11-05 14:00:41,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 91 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2024-11-05 14:00:41,147 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 53 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:41,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 321 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-05 14:00:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-05 14:00:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-05 14:00:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 55 states have internal predecessors, (58), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 14:00:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-05 14:00:41,169 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 63 [2024-11-05 14:00:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:41,169 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-05 14:00:41,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 5 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 14:00:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-05 14:00:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 14:00:41,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:41,170 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-05 14:00:41,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-05 14:00:41,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:41,370 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:41,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash 634054911, now seen corresponding path program 1 times [2024-11-05 14:00:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641898410] [2024-11-05 14:00:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:41,371 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:41,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:41,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:00:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:41,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 14:00:41,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 14:00:41,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 14:00:41,789 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:41,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641898410] [2024-11-05 14:00:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [641898410] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:00:41,790 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:00:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-05 14:00:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740481960] [2024-11-05 14:00:41,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:00:41,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 14:00:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 14:00:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-05 14:00:41,791 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-05 14:00:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:41,841 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2024-11-05 14:00:41,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 14:00:41,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 63 [2024-11-05 14:00:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:41,844 INFO L225 Difference]: With dead ends: 105 [2024-11-05 14:00:41,844 INFO L226 Difference]: Without dead ends: 68 [2024-11-05 14:00:41,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:00:41,845 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:41,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 145 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:00:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-05 14:00:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-05 14:00:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 14:00:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-05 14:00:41,861 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2024-11-05 14:00:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:41,861 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-05 14:00:41,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-05 14:00:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-05 14:00:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 14:00:41,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:41,862 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:00:41,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 14:00:42,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:42,063 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:42,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1007142523, now seen corresponding path program 1 times [2024-11-05 14:00:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592898053] [2024-11-05 14:00:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:42,063 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:42,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:42,064 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:42,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 14:00:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:42,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-05 14:00:42,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:42,190 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 19 treesize of output 11 [2024-11-05 14:00:42,203 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 19 treesize of output 11 [2024-11-05 14:00:42,215 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 11 treesize of output 7 [2024-11-05 14:00:42,226 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 14:00:44,739 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-05 14:00:44,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 87 [2024-11-05 14:00:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-05 14:00:44,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 14:00:50,855 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:50,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592898053] [2024-11-05 14:00:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [592898053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:50,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2024-11-05 14:00:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484567070] [2024-11-05 14:00:50,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:50,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-05 14:00:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-05 14:00:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=834, Unknown=1, NotChecked=0, Total=930 [2024-11-05 14:00:50,857 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 31 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 25 states have internal predecessors, (68), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-05 14:00:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:00:54,696 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-05 14:00:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:00:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 25 states have internal predecessors, (68), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) Word has length 77 [2024-11-05 14:00:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:00:54,697 INFO L225 Difference]: With dead ends: 77 [2024-11-05 14:00:54,697 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 14:00:54,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 107 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=175, Invalid=1464, Unknown=1, NotChecked=0, Total=1640 [2024-11-05 14:00:54,700 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-05 14:00:54,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 364 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-05 14:00:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 14:00:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-05 14:00:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 14:00:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-05 14:00:54,726 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 77 [2024-11-05 14:00:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:00:54,726 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-05 14:00:54,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 25 states have internal predecessors, (68), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-05 14:00:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-05 14:00:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 14:00:54,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:00:54,727 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-11-05 14:00:54,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 14:00:54,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:54,927 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:00:54,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:00:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 197795897, now seen corresponding path program 1 times [2024-11-05 14:00:54,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:00:54,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759070170] [2024-11-05 14:00:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:00:54,928 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:00:54,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:00:54,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:00:54,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 14:00:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:00:55,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-05 14:00:55,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:00:55,040 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 14:00:55,044 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 19 treesize of output 11 [2024-11-05 14:00:55,050 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 11 treesize of output 7 [2024-11-05 14:00:55,056 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 19 treesize of output 11 [2024-11-05 14:00:55,294 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 30 treesize of output 18 [2024-11-05 14:00:55,297 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 11 treesize of output 3 [2024-11-05 14:00:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 14:00:57,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:00:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 14:00:58,538 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:00:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759070170] [2024-11-05 14:00:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1759070170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:00:58,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:00:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2024-11-05 14:00:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292615626] [2024-11-05 14:00:58,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:00:58,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-05 14:00:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:00:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-05 14:00:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2024-11-05 14:00:58,539 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-05 14:01:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:02,288 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2024-11-05 14:01:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 14:01:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 77 [2024-11-05 14:01:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:02,290 INFO L225 Difference]: With dead ends: 98 [2024-11-05 14:01:02,290 INFO L226 Difference]: Without dead ends: 78 [2024-11-05 14:01:02,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2024-11-05 14:01:02,291 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:02,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 315 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-05 14:01:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-05 14:01:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-05 14:01:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 53 states have internal predecessors, (54), 13 states have call successors, (13), 10 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 14:01:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2024-11-05 14:01:02,316 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 77 [2024-11-05 14:01:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:02,316 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2024-11-05 14:01:02,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-05 14:01:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2024-11-05 14:01:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 14:01:02,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:02,318 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:02,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:02,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,519 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:02,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash -195231113, now seen corresponding path program 1 times [2024-11-05 14:01:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740658338] [2024-11-05 14:01:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:02,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:02,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 14:01:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:02,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-05 14:01:02,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:02,634 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 14:01:02,637 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 11 treesize of output 7 [2024-11-05 14:01:03,093 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 16 treesize of output 8 [2024-11-05 14:01:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:01:03,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-05 14:01:03,891 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:03,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740658338] [2024-11-05 14:01:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [740658338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:01:03,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:01:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2024-11-05 14:01:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91367029] [2024-11-05 14:01:03,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:01:03,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 14:01:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 14:01:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-05 14:01:03,892 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 21 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-05 14:01:05,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:05,807 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-11-05 14:01:05,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 14:01:05,808 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 21 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 77 [2024-11-05 14:01:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:05,809 INFO L225 Difference]: With dead ends: 93 [2024-11-05 14:01:05,809 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 14:01:05,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-11-05 14:01:05,810 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 71 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:05,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 328 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-05 14:01:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 14:01:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-05 14:01:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0) internal successors, (42), 42 states have internal predecessors, (42), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 14:01:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-05 14:01:05,835 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 77 [2024-11-05 14:01:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:05,835 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-05 14:01:05,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 21 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-05 14:01:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-05 14:01:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 14:01:05,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:01:05,836 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:05,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 14:01:06,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:06,036 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:01:06,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:01:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1385380010, now seen corresponding path program 1 times [2024-11-05 14:01:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:01:06,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496693002] [2024-11-05 14:01:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:01:06,037 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:01:06,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:06,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:01:06,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 14:01:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:01:06,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-05 14:01:06,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:01:06,149 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 11 treesize of output 7 [2024-11-05 14:01:06,156 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 11 treesize of output 7 [2024-11-05 14:01:06,278 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 15 treesize of output 7 [2024-11-05 14:01:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-05 14:01:06,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:01:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 14:01:06,732 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:01:06,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496693002] [2024-11-05 14:01:06,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1496693002] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 14:01:06,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 14:01:06,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-05 14:01:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772720948] [2024-11-05 14:01:06,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 14:01:06,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:01:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:01:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:01:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-05 14:01:06,733 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:01:06,977 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-11-05 14:01:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 14:01:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2024-11-05 14:01:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:01:06,977 INFO L225 Difference]: With dead ends: 63 [2024-11-05 14:01:06,977 INFO L226 Difference]: Without dead ends: 0 [2024-11-05 14:01:06,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-05 14:01:06,978 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:01:06,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 252 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:01:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-05 14:01:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-05 14:01:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-05 14:01:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-05 14:01:06,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2024-11-05 14:01:06,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:01:06,980 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-05 14:01:06,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 14:01:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-05 14:01:06,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-05 14:01:06,982 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-05 14:01:06,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-05 14:01:07,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:01:07,185 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:01:07,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.