/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:28:53,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:28:53,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:28:53,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:28:53,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:28:53,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:28:53,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:28:53,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:28:53,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:28:53,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:28:53,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:28:53,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:28:53,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:28:53,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:28:53,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:28:53,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:28:53,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:28:53,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:28:53,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:28:53,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:28:53,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:28:53,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:28:53,449 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:28:53,449 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:28:53,450 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:28:53,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:28:53,450 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:28:53,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:28:53,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:28:53,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:28:53,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:28:53,451 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:28:53,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:28:53,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:28:53,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:28:53,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:28:53,453 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:53,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:28:53,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:28:53,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:28:53,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:28:53,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:28:53,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-05 02:28:55,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:28:55,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:28:55,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-05 02:28:55,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f28d556/ab8b051f722f43bd865bc0097973794a/FLAGf032b832b [2024-11-05 02:28:55,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f28d556/ab8b051f722f43bd865bc0097973794a [2024-11-05 02:28:55,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:28:55,718 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:28:55,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:28:55,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:28:55,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:28:55,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:28:55" (1/1) ... [2024-11-05 02:28:55,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f62ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:55, skipping insertion in model container [2024-11-05 02:28:55,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:28:55" (1/1) ... [2024-11-05 02:28:55,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:28:56,010 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_pop_back_harness.i[4498,4511] [2024-11-05 02:28:56,017 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_pop_back_harness.i[4558,4571] [2024-11-05 02:28:56,416 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,500 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,500 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,500 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,511 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,512 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,513 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,514 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,516 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,517 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,518 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,518 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,524 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,524 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,525 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,526 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,526 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,526 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,527 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,528 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,528 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,529 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,529 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,529 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:56,823 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,824 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,828 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,829 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:56,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:57,002 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:28:57,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:28:57,032 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_pop_back_harness.i[4498,4511] [2024-11-05 02:28:57,033 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_pop_back_harness.i[4558,4571] [2024-11-05 02:28:57,052 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,064 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,064 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,064 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,067 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,068 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,068 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,068 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,069 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,069 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,069 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,070 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,070 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,071 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,071 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,074 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,074 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,074 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,074 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,075 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,080 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,080 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,080 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,081 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,082 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,082 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,082 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,082 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,082 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,122 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,123 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 02:28:57,127 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,127 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,151 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:57,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:57,166 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:28:57,179 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_pop_back_harness.i[4498,4511] [2024-11-05 02:28:57,180 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_pop_back_harness.i[4558,4571] [2024-11-05 02:28:57,205 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,205 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,205 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,205 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,206 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,210 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,210 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,211 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,211 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,212 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,212 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,213 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,213 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:57,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:57,466 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:28:57,475 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:28:57,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57 WrapperNode [2024-11-05 02:28:57,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:28:57,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:28:57,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:28:57,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:28:57,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,571 INFO L138 Inliner]: procedures = 687, calls = 1044, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 227 [2024-11-05 02:28:57,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:28:57,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:28:57,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:28:57,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:28:57,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,647 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 36, 5]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 9 writes are split as follows [0, 9, 0]. [2024-11-05 02:28:57,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:28:57,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:28:57,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:28:57,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:28:57,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (1/1) ... [2024-11-05 02:28:57,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:28:57,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:28:57,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:28:57,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:28:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-05 02:28:57,748 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-05 02:28:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-05 02:28:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:28:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:28:57,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:28:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:28:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:28:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 02:28:57,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-05 02:28:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:28:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:28:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:28:57,964 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:28:57,966 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:28:58,417 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-05 02:28:58,417 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:28:58,426 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:28:58,427 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-05 02:28:58,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:28:58 BoogieIcfgContainer [2024-11-05 02:28:58,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:28:58,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:28:58,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:28:58,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:28:58,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:28:55" (1/3) ... [2024-11-05 02:28:58,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5ca461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:28:58, skipping insertion in model container [2024-11-05 02:28:58,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:57" (2/3) ... [2024-11-05 02:28:58,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5ca461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:28:58, skipping insertion in model container [2024-11-05 02:28:58,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:28:58" (3/3) ... [2024-11-05 02:28:58,432 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2024-11-05 02:28:58,442 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:28:58,443 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:28:58,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:28:58,507 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;@6479415e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:28:58,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:28:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-05 02:28:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-05 02:28:58,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:58,521 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:58,521 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:58,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1634297944, now seen corresponding path program 1 times [2024-11-05 02:28:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958816899] [2024-11-05 02:28:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:58,531 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:58,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:58,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:58,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:28:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:58,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:28:58,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-05 02:28:58,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-05 02:28:58,864 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958816899] [2024-11-05 02:28:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958816899] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:58,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:58,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:28:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611121550] [2024-11-05 02:28:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:58,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:28:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:28:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:28:58,895 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-05 02:28:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:58,941 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2024-11-05 02:28:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:28:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-05 02:28:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:58,948 INFO L225 Difference]: With dead ends: 266 [2024-11-05 02:28:58,948 INFO L226 Difference]: Without dead ends: 132 [2024-11-05 02:28:58,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:28:58,956 INFO L432 NwaCegarLoop]: 183 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, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:58,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:28:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-05 02:28:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-05 02:28:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.25) internal successors, (105), 85 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-05 02:28:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2024-11-05 02:28:59,017 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 116 [2024-11-05 02:28:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:59,017 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2024-11-05 02:28:59,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-05 02:28:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2024-11-05 02:28:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-05 02:28:59,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:59,024 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:59,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-05 02:28:59,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:59,225 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:59,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash 851280282, now seen corresponding path program 1 times [2024-11-05 02:28:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928791131] [2024-11-05 02:28:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:59,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:59,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:59,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:59,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:28:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:59,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 02:28:59,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-05 02:28:59,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-05 02:28:59,506 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:59,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928791131] [2024-11-05 02:28:59,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928791131] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:59,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:59,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 02:28:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168367326] [2024-11-05 02:28:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:59,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 02:28:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 02:28:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 02:28:59,511 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-05 02:28:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:59,575 INFO L93 Difference]: Finished difference Result 247 states and 338 transitions. [2024-11-05 02:28:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 02:28:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-05 02:28:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:59,581 INFO L225 Difference]: With dead ends: 247 [2024-11-05 02:28:59,581 INFO L226 Difference]: Without dead ends: 135 [2024-11-05 02:28:59,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 02:28:59,586 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 1 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:59,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 517 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:28:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-05 02:28:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2024-11-05 02:28:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.244186046511628) internal successors, (107), 87 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-05 02:28:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 180 transitions. [2024-11-05 02:28:59,614 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 180 transitions. Word has length 116 [2024-11-05 02:28:59,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:59,616 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 180 transitions. [2024-11-05 02:28:59,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-05 02:28:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 180 transitions. [2024-11-05 02:28:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-05 02:28:59,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:59,618 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:59,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:59,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:59,819 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:59,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -911862316, now seen corresponding path program 1 times [2024-11-05 02:28:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:59,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064240766] [2024-11-05 02:28:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:59,820 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:59,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:59,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:59,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:28:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:59,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 02:28:59,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-05 02:28:59,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-05 02:29:00,061 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064240766] [2024-11-05 02:29:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1064240766] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 02:29:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022773113] [2024-11-05 02:29:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:00,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 02:29:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 02:29:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 02:29:00,063 INFO L87 Difference]: Start difference. First operand 134 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-05 02:29:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:00,097 INFO L93 Difference]: Finished difference Result 251 states and 343 transitions. [2024-11-05 02:29:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 02:29:00,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-05 02:29:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:00,101 INFO L225 Difference]: With dead ends: 251 [2024-11-05 02:29:00,101 INFO L226 Difference]: Without dead ends: 137 [2024-11-05 02:29:00,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 02:29:00,102 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 1 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:00,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:29:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-05 02:29:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-05 02:29:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 90 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-05 02:29:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2024-11-05 02:29:00,112 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 116 [2024-11-05 02:29:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:00,112 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2024-11-05 02:29:00,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-05 02:29:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2024-11-05 02:29:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-05 02:29:00,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:00,114 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:00,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-05 02:29:00,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:00,316 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:00,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1271238514, now seen corresponding path program 1 times [2024-11-05 02:29:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129547141] [2024-11-05 02:29:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:00,317 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:00,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:00,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:29:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 02:29:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:00,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-05 02:29:00,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:00,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:00,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:00,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:00,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:00,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:00,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:29:00,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:29:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-05 02:29:02,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:04,536 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 6554 treesize of output 6490 [2024-11-05 02:29:04,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:04,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 02:29:04,731 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 246 treesize of output 238 [2024-11-05 02:29:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-05 02:29:05,456 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129547141] [2024-11-05 02:29:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [129547141] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:05,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:05,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2024-11-05 02:29:05,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58737319] [2024-11-05 02:29:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:05,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:29:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:29:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:29:05,463 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-05 02:29:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:07,666 INFO L93 Difference]: Finished difference Result 273 states and 363 transitions. [2024-11-05 02:29:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:29:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 116 [2024-11-05 02:29:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:07,668 INFO L225 Difference]: With dead ends: 273 [2024-11-05 02:29:07,668 INFO L226 Difference]: Without dead ends: 138 [2024-11-05 02:29:07,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:29:07,670 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 10 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:07,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1216 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-05 02:29:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-05 02:29:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-05 02:29:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.2333333333333334) internal successors, (111), 91 states have internal predecessors, (111), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-05 02:29:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2024-11-05 02:29:07,683 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 116 [2024-11-05 02:29:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:07,683 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2024-11-05 02:29:07,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-05 02:29:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2024-11-05 02:29:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-05 02:29:07,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:07,684 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:07,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-05 02:29:07,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:07,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:07,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2104858028, now seen corresponding path program 1 times [2024-11-05 02:29:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429849904] [2024-11-05 02:29:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:07,888 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:07,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:29:07,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-05 02:29:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:08,179 WARN L253 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-05 02:29:08,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:08,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:08,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:29:08,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:08,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:08,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:08,609 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:29:08,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:29:08,676 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:08,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:08,699 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:29:08,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:29:08,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:09,107 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:29:09,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:29:09,168 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:29:09,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:29:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-05 02:29:18,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-05 02:29:19,617 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:19,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429849904] [2024-11-05 02:29:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [429849904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:29:19,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:29:19,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 6] total 24 [2024-11-05 02:29:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807351431] [2024-11-05 02:29:19,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:29:19,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 02:29:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 02:29:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:29:19,623 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 24 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 10 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:29:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:30,360 INFO L93 Difference]: Finished difference Result 353 states and 475 transitions. [2024-11-05 02:29:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-05 02:29:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 10 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 118 [2024-11-05 02:29:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:30,368 INFO L225 Difference]: With dead ends: 353 [2024-11-05 02:29:30,368 INFO L226 Difference]: Without dead ends: 235 [2024-11-05 02:29:30,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:29:30,370 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 77 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:30,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1810 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-05 02:29:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-05 02:29:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2024-11-05 02:29:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 152 states have (on average 1.236842105263158) internal successors, (188), 156 states have internal predecessors, (188), 60 states have call successors, (60), 18 states have call predecessors, (60), 19 states have return successors, (65), 57 states have call predecessors, (65), 59 states have call successors, (65) [2024-11-05 02:29:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 313 transitions. [2024-11-05 02:29:30,441 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 313 transitions. Word has length 118 [2024-11-05 02:29:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:30,441 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 313 transitions. [2024-11-05 02:29:30,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 10 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:29:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 313 transitions. [2024-11-05 02:29:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-05 02:29:30,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:30,443 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:30,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-05 02:29:30,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:30,646 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:30,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2112369774, now seen corresponding path program 1 times [2024-11-05 02:29:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849275641] [2024-11-05 02:29:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:30,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:30,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:30,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:29:30,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-05 02:29:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:30,817 WARN L253 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-11-05 02:29:30,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:30,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:30,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:29:30,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:31,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:31,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:31,179 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:31,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:31,203 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:29:31,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:29:31,242 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:29:31,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:29:31,616 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:29:31,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:29:31,656 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:29:31,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:29:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 17 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-05 02:29:40,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-05 02:29:41,100 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849275641] [2024-11-05 02:29:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [849275641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:29:41,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:29:41,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 24 [2024-11-05 02:29:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091357967] [2024-11-05 02:29:41,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:29:41,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 02:29:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 02:29:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:29:41,102 INFO L87 Difference]: Start difference. First operand 232 states and 313 transitions. Second operand has 24 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:29:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:49,893 INFO L93 Difference]: Finished difference Result 441 states and 596 transitions. [2024-11-05 02:29:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-05 02:29:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 120 [2024-11-05 02:29:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:49,896 INFO L225 Difference]: With dead ends: 441 [2024-11-05 02:29:49,896 INFO L226 Difference]: Without dead ends: 245 [2024-11-05 02:29:49,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 208 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:29:49,897 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 118 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:49,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1745 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-05 02:29:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-05 02:29:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 236. [2024-11-05 02:29:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.232258064516129) internal successors, (191), 160 states have internal predecessors, (191), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (67), 57 states have call predecessors, (67), 59 states have call successors, (67) [2024-11-05 02:29:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 318 transitions. [2024-11-05 02:29:49,935 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 318 transitions. Word has length 120 [2024-11-05 02:29:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:49,935 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 318 transitions. [2024-11-05 02:29:49,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:29:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 318 transitions. [2024-11-05 02:29:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-05 02:29:49,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:49,937 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:49,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-05 02:29:50,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:50,140 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:50,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1654968155, now seen corresponding path program 1 times [2024-11-05 02:29:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:50,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655471679] [2024-11-05 02:29:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:50,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:29:50,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-05 02:29:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:50,306 WARN L253 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-05 02:29:50,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:50,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:50,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:50,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:29:50,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:50,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:29:50,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:29:50,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:50,647 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:29:50,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:29:50,680 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:29:50,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:29:50,712 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:50,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:50,997 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-05 02:29:50,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 75 [2024-11-05 02:29:51,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2024-11-05 02:29:51,095 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:29:51,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 106 [2024-11-05 02:29:51,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-11-05 02:29:51,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:30:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 17 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-05 02:30:00,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-05 02:30:01,069 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655471679] [2024-11-05 02:30:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1655471679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:30:01,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:30:01,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8] total 27 [2024-11-05 02:30:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334307226] [2024-11-05 02:30:01,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:30:01,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 02:30:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 02:30:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-05 02:30:01,071 INFO L87 Difference]: Start difference. First operand 236 states and 318 transitions. Second operand has 27 states, 25 states have (on average 4.0) internal successors, (100), 24 states have internal predecessors, (100), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:30:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:12,759 INFO L93 Difference]: Finished difference Result 463 states and 629 transitions. [2024-11-05 02:30:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-05 02:30:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.0) internal successors, (100), 24 states have internal predecessors, (100), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 122 [2024-11-05 02:30:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:12,763 INFO L225 Difference]: With dead ends: 463 [2024-11-05 02:30:12,765 INFO L226 Difference]: Without dead ends: 263 [2024-11-05 02:30:12,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 209 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:30:12,767 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 141 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:12,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2050 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2024-11-05 02:30:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-05 02:30:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 240. [2024-11-05 02:30:12,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 159 states have (on average 1.2389937106918238) internal successors, (197), 164 states have internal predecessors, (197), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (67), 57 states have call predecessors, (67), 59 states have call successors, (67) [2024-11-05 02:30:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 324 transitions. [2024-11-05 02:30:12,865 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 324 transitions. Word has length 122 [2024-11-05 02:30:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:12,865 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 324 transitions. [2024-11-05 02:30:12,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.0) internal successors, (100), 24 states have internal predecessors, (100), 10 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-05 02:30:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 324 transitions. [2024-11-05 02:30:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-05 02:30:12,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:12,867 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:12,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-05 02:30:13,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:13,069 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:13,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2069312651, now seen corresponding path program 1 times [2024-11-05 02:30:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:13,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738820899] [2024-11-05 02:30:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:13,070 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:13,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:13,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:13,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-05 02:30:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:13,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-05 02:30:13,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:13,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:13,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:30:13,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:13,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:13,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:13,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:13,528 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:30:13,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:30:13,548 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:30:13,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:30:13,574 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 13 treesize of output 1 [2024-11-05 02:30:13,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:13,614 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:30:13,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:30:13,944 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:30:13,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:30:13,987 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:30:13,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:30:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 17 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 02:30:23,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-05 02:30:23,971 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:23,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738820899] [2024-11-05 02:30:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [738820899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:30:23,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:30:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3] total 19 [2024-11-05 02:30:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456704139] [2024-11-05 02:30:23,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:30:23,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:30:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:30:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:30:23,974 INFO L87 Difference]: Start difference. First operand 240 states and 324 transitions. Second operand has 19 states, 17 states have (on average 5.470588235294118) internal successors, (93), 16 states have internal predecessors, (93), 8 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29)