/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_rbegin_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:30:25,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:30:25,546 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 02:30:25,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:30:25,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:30:25,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:30:25,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:30:25,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:30:25,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:30:25,565 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:30:25,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:30:25,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:30:25,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:30:25,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:30:25,566 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:30:25,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:30:25,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:30:25,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:30:25,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:30:25,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:30:25,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:30:25,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:30:25,568 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:30:25,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:30:25,568 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:30:25,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:30:25,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:30:25,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:30:25,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:30:25,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:30:25,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:30:25,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:30:25,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:30:25,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:30:25,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:30:25,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:30:25,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:25,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:30:25,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:30:25,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:30:25,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:30:25,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:30:25,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness_negated.i [2024-11-05 02:30:27,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:30:27,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:30:27,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness_negated.i [2024-11-05 02:30:27,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b180c76/afc7b63617984675bfeb8b17d9bceab5/FLAG83bcfeb0c [2024-11-05 02:30:27,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b180c76/afc7b63617984675bfeb8b17d9bceab5 [2024-11-05 02:30:27,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:30:27,378 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:30:27,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:30:27,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:30:27,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:30:27,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:30:27" (1/1) ... [2024-11-05 02:30:27,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdb4bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:27, skipping insertion in model container [2024-11-05 02:30:27,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:30:27" (1/1) ... [2024-11-05 02:30:27,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:30:27,678 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_rbegin_harness_negated.i[4496,4509] [2024-11-05 02:30:27,686 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_rbegin_harness_negated.i[4556,4569] [2024-11-05 02:30:28,107 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 02:30:28,168 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 02:30:28,169 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 02:30:28,170 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 02:30:28,177 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 02:30:28,183 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,184 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,184 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,185 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 02:30:28,185 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,186 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,188 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 02:30:28,189 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 02:30:28,190 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 02:30:28,191 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 02:30:28,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,197 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 02:30:28,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,198 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 02:30:28,199 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,202 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 02:30:28,203 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,203 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 02:30:28,204 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,205 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 02:30:28,209 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,209 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 02:30:28,209 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,210 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,452 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 02:30:28,452 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 02:30:28,453 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 02:30:28,453 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 02:30:28,555 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 02:30:28,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:28,589 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:30:28,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:30:28,620 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness_negated.i[4496,4509] [2024-11-05 02:30:28,621 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_rbegin_harness_negated.i[4556,4569] [2024-11-05 02:30:28,646 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 02:30:28,690 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 02:30:28,690 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 02:30:28,691 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 02:30:28,695 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,696 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,696 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,696 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,697 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,697 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,698 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,699 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,699 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,700 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,701 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 02:30:28,704 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,704 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 02:30:28,705 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,705 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 02:30:28,706 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,706 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 02:30:28,706 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,708 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 02:30:28,708 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,709 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 02:30:28,710 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,711 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 02:30:28,712 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,712 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,779 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,779 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:28,784 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 02:30:28,784 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 02:30:28,820 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 02:30:28,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:28,833 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:30:28,846 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_rbegin_harness_negated.i[4496,4509] [2024-11-05 02:30:28,847 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness_negated.i[4556,4569] [2024-11-05 02:30:28,885 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,886 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,886 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,886 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,887 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,894 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,894 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,895 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,895 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,900 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,900 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,900 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,901 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:28,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:29,095 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:30:29,104 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:30:29,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29 WrapperNode [2024-11-05 02:30:29,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:30:29,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:30:29,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:30:29,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:30:29,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,191 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-05 02:30:29,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:30:29,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:30:29,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:30:29,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:30:29,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,235 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 02:30:29,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:30:29,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:30:29,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:30:29,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:30:29,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (1/1) ... [2024-11-05 02:30:29,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:30:29,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:30:29,297 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 02:30:29,299 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 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:30:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:30:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:30:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:30:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:30:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:30:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:30:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:30:29,319 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:30:29,502 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:30:29,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:30:29,807 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-05 02:30:29,807 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:30:29,820 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:30:29,821 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 02:30:29,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:30:29 BoogieIcfgContainer [2024-11-05 02:30:29,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:30:29,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:30:29,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:30:29,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:30:29,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:30:27" (1/3) ... [2024-11-05 02:30:29,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ebf2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:30:29, skipping insertion in model container [2024-11-05 02:30:29,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:29" (2/3) ... [2024-11-05 02:30:29,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ebf2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:30:29, skipping insertion in model container [2024-11-05 02:30:29,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:30:29" (3/3) ... [2024-11-05 02:30:29,827 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness_negated.i [2024-11-05 02:30:29,839 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:30:29,839 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:30:29,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:30:29,883 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;@142b8c4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:30:29,883 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:30:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-05 02:30:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:30:29,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:29,894 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:29,895 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:29,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-05 02:30:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:29,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713512246] [2024-11-05 02:30:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:29,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:29,911 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 02:30:29,915 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 02:30:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:30,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:30:30,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:30,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:30,209 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:30,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713512246] [2024-11-05 02:30:30,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [713512246] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:30,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:30:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901756356] [2024-11-05 02:30:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:30,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:30:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:30:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:30:30,233 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:30:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:30,254 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-05 02:30:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:30:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-05 02:30:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:30,264 INFO L225 Difference]: With dead ends: 130 [2024-11-05 02:30:30,264 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 02:30:30,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:30:30,271 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:30,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:30:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 02:30:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-05 02:30:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 02:30:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-05 02:30:30,309 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-05 02:30:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:30,309 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-05 02:30:30,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:30:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-05 02:30:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:30:30,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:30,314 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:30,320 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 02:30:30,514 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 02:30:30,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:30,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-05 02:30:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110449199] [2024-11-05 02:30:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:30,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:30,519 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 02:30:30,520 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 02:30:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:30,657 WARN L253 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-05 02:30:30,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:30,748 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 02:30:30,904 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 02:30:30,916 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 02:30:30,934 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 02:30:31,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:31,045 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 02:30:31,067 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 02:30:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 02:30:34,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:34,748 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110449199] [2024-11-05 02:30:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [110449199] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:30:34,748 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:30:34,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 6] imperfect sequences [] total 18 [2024-11-05 02:30:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898127077] [2024-11-05 02:30:34,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:34,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:30:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:30:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:30:34,751 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:37,168 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2024-11-05 02:30:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 02:30:37,168 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 68 [2024-11-05 02:30:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:37,171 INFO L225 Difference]: With dead ends: 140 [2024-11-05 02:30:37,171 INFO L226 Difference]: Without dead ends: 138 [2024-11-05 02:30:37,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:30:37,173 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 62 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:37,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 778 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 02:30:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-05 02:30:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2024-11-05 02:30:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.288888888888889) internal successors, (116), 94 states have internal predecessors, (116), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:30:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2024-11-05 02:30:37,196 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 68 [2024-11-05 02:30:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:37,198 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2024-11-05 02:30:37,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2024-11-05 02:30:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:30:37,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:37,200 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:37,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-05 02:30:37,402 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 02:30:37,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:37,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:37,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1476585288, now seen corresponding path program 1 times [2024-11-05 02:30:37,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:37,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913747601] [2024-11-05 02:30:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:37,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:37,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:37,406 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 02:30:37,407 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 02:30:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:37,542 WARN L253 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:30:37,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:37,561 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 02:30:37,660 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 02:30:37,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-05 02:30:37,679 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 02:30:37,684 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 02:30:37,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:37,776 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 02:30:37,790 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 02:30:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:30:40,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:41,359 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913747601] [2024-11-05 02:30:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [913747601] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:30:41,359 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:30:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 7] imperfect sequences [] total 22 [2024-11-05 02:30:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337137801] [2024-11-05 02:30:41,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-05 02:30:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-05 02:30:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-05 02:30:41,361 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:45,112 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2024-11-05 02:30:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-05 02:30:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2024-11-05 02:30:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:45,116 INFO L225 Difference]: With dead ends: 161 [2024-11-05 02:30:45,116 INFO L226 Difference]: Without dead ends: 159 [2024-11-05 02:30:45,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:30:45,117 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 83 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:45,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 733 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-05 02:30:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-05 02:30:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2024-11-05 02:30:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 96 states have internal predecessors, (118), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:30:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2024-11-05 02:30:45,155 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 70 [2024-11-05 02:30:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:45,156 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2024-11-05 02:30:45,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2024-11-05 02:30:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:30:45,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:45,162 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:45,165 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 02:30:45,363 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 02:30:45,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:45,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1205099605, now seen corresponding path program 1 times [2024-11-05 02:30:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:45,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976426749] [2024-11-05 02:30:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:45,364 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:45,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:45,366 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 02:30:45,367 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 02:30:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:45,516 WARN L253 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-05 02:30:45,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:45,536 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 02:30:45,598 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 02:30:45,609 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 02:30:45,612 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 02:30:45,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:45,685 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 02:30:45,700 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 02:30:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:30:48,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:49,346 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:49,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976426749] [2024-11-05 02:30:49,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1976426749] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:30:49,347 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:30:49,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 9] imperfect sequences [] total 26 [2024-11-05 02:30:49,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684423036] [2024-11-05 02:30:49,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:49,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 02:30:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:49,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 02:30:49,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:30:49,348 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:53,147 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2024-11-05 02:30:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-05 02:30:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 72 [2024-11-05 02:30:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:53,149 INFO L225 Difference]: With dead ends: 175 [2024-11-05 02:30:53,149 INFO L226 Difference]: Without dead ends: 173 [2024-11-05 02:30:53,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2024-11-05 02:30:53,151 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 99 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:53,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 865 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-05 02:30:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-05 02:30:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 134. [2024-11-05 02:30:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 98 states have internal predecessors, (120), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:30:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 178 transitions. [2024-11-05 02:30:53,183 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 178 transitions. Word has length 72 [2024-11-05 02:30:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:53,183 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 178 transitions. [2024-11-05 02:30:53,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 178 transitions. [2024-11-05 02:30:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 02:30:53,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:53,184 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:53,187 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 02:30:53,386 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 02:30:53,387 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:53,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1455165852, now seen corresponding path program 1 times [2024-11-05 02:30:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309505400] [2024-11-05 02:30:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:53,387 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:53,390 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 02:30:53,391 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 02:30:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:53,517 WARN L253 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-05 02:30:53,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:53,529 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 02:30:53,587 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 02:30:53,597 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 02:30:53,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:53,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:53,675 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 02:30:53,686 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 02:30:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:30:56,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:56,644 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309505400] [2024-11-05 02:30:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [309505400] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:30:56,645 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:30:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 3] imperfect sequences [] total 15 [2024-11-05 02:30:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147861199] [2024-11-05 02:30:56,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:56,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-05 02:30:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-05 02:30:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-05 02:30:56,646 INFO L87 Difference]: Start difference. First operand 134 states and 178 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:59,219 INFO L93 Difference]: Finished difference Result 269 states and 370 transitions. [2024-11-05 02:30:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 02:30:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 73 [2024-11-05 02:30:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:59,221 INFO L225 Difference]: With dead ends: 269 [2024-11-05 02:30:59,221 INFO L226 Difference]: Without dead ends: 153 [2024-11-05 02:30:59,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:30:59,223 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:59,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 504 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-05 02:30:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-05 02:30:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2024-11-05 02:30:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 102 states have internal predecessors, (126), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:30:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2024-11-05 02:30:59,246 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 73 [2024-11-05 02:30:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:59,247 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2024-11-05 02:30:59,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2024-11-05 02:30:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-05 02:30:59,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:59,248 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:59,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-05 02:30:59,448 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 02:30:59,448 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:59,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -997200532, now seen corresponding path program 1 times [2024-11-05 02:30:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099428223] [2024-11-05 02:30:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:59,449 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:59,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:59,451 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 02:30:59,452 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 02:30:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:59,633 WARN L253 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:30:59,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:59,648 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 02:30:59,741 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 02:30:59,752 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 02:30:59,763 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 02:30:59,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:59,896 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 02:30:59,910 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 02:31:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:31:00,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:31:01,494 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099428223] [2024-11-05 02:31:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2099428223] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:31:01,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:31:01,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-05 02:31:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251710534] [2024-11-05 02:31:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:31:01,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:31:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:31:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:31:01,497 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-05 02:31:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:03,387 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-11-05 02:31:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:31:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-05 02:31:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:03,389 INFO L225 Difference]: With dead ends: 203 [2024-11-05 02:31:03,389 INFO L226 Difference]: Without dead ends: 142 [2024-11-05 02:31:03,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:31:03,391 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 59 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:03,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 520 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 02:31:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-05 02:31:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2024-11-05 02:31:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 104 states have internal predecessors, (127), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (35), 24 states have call predecessors, (35), 24 states have call successors, (35) [2024-11-05 02:31:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2024-11-05 02:31:03,423 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 74 [2024-11-05 02:31:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:03,424 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2024-11-05 02:31:03,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-05 02:31:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2024-11-05 02:31:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-05 02:31:03,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:03,425 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:03,428 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 02:31:03,625 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 02:31:03,625 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:03,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 174462792, now seen corresponding path program 1 times [2024-11-05 02:31:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211765441] [2024-11-05 02:31:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:03,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:03,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:03,628 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 02:31:03,630 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 02:31:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:03,788 WARN L253 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-05 02:31:03,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:03,799 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 02:31:03,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:03,891 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 02:31:03,900 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 02:31:03,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:04,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:31:04,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:31:05,468 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211765441] [2024-11-05 02:31:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [211765441] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:31:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:31:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-05 02:31:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980963590] [2024-11-05 02:31:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:31:05,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 02:31:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 02:31:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:31:05,470 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:31:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:07,061 INFO L93 Difference]: Finished difference Result 208 states and 279 transitions. [2024-11-05 02:31:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 02:31:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-05 02:31:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:07,063 INFO L225 Difference]: With dead ends: 208 [2024-11-05 02:31:07,063 INFO L226 Difference]: Without dead ends: 145 [2024-11-05 02:31:07,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:31:07,064 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 50 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:07,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 426 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-05 02:31:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-05 02:31:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2024-11-05 02:31:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.2772277227722773) internal successors, (129), 107 states have internal predecessors, (129), 26 states have call successors, (26), 11 states have call predecessors, (26), 15 states have return successors, (37), 24 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-05 02:31:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 192 transitions. [2024-11-05 02:31:07,091 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 192 transitions. Word has length 76 [2024-11-05 02:31:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:07,091 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 192 transitions. [2024-11-05 02:31:07,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:31:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 192 transitions. [2024-11-05 02:31:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-05 02:31:07,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:07,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:07,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-05 02:31:07,293 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 02:31:07,294 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:07,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1845067606, now seen corresponding path program 1 times [2024-11-05 02:31:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:07,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830912977] [2024-11-05 02:31:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:07,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:07,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:07,296 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 02:31:07,297 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 02:31:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:07,462 WARN L253 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-05 02:31:07,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:07,475 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 02:31:07,482 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 02:31:07,487 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 02:31:07,603 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 02:31:07,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:07,632 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 02:31:07,718 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:07,718 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 02:31:07,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:07,758 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:07,758 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 02:31:07,793 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:07,793 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 02:31:08,083 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:08,084 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 02:31:08,117 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:08,118 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 02:31:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:31:10,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:31:11,298 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830912977] [2024-11-05 02:31:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1830912977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:11,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:11,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2024-11-05 02:31:11,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782049631] [2024-11-05 02:31:11,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:11,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:31:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:31:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:31:11,300 INFO L87 Difference]: Start difference. First operand 143 states and 192 transitions. Second operand has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 02:31:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:14,748 INFO L93 Difference]: Finished difference Result 281 states and 376 transitions. [2024-11-05 02:31:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:31:14,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 76 [2024-11-05 02:31:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:14,754 INFO L225 Difference]: With dead ends: 281 [2024-11-05 02:31:14,754 INFO L226 Difference]: Without dead ends: 219 [2024-11-05 02:31:14,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:31:14,755 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 108 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:14,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1228 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-05 02:31:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-05 02:31:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2024-11-05 02:31:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 112 states have internal predecessors, (133), 26 states have call successors, (26), 12 states have call predecessors, (26), 17 states have return successors, (40), 24 states have call predecessors, (40), 24 states have call successors, (40) [2024-11-05 02:31:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2024-11-05 02:31:14,809 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 76 [2024-11-05 02:31:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:14,809 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2024-11-05 02:31:14,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 02:31:14,809 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2024-11-05 02:31:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 02:31:14,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:14,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:14,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-05 02:31:15,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:15,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:15,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2007641899, now seen corresponding path program 1 times [2024-11-05 02:31:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426695438] [2024-11-05 02:31:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:15,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:15,013 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:15,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-05 02:31:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:15,185 WARN L253 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-05 02:31:15,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:15,196 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 02:31:15,272 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 02:31:15,282 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 02:31:15,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:15,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:31:16,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:31:17,179 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:17,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426695438] [2024-11-05 02:31:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1426695438] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:31:17,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:31:17,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2024-11-05 02:31:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616796053] [2024-11-05 02:31:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:31:17,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:31:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:31:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:31:17,181 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:31:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:19,839 INFO L93 Difference]: Finished difference Result 224 states and 300 transitions. [2024-11-05 02:31:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 02:31:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2024-11-05 02:31:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:19,840 INFO L225 Difference]: With dead ends: 224 [2024-11-05 02:31:19,840 INFO L226 Difference]: Without dead ends: 158 [2024-11-05 02:31:19,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:31:19,841 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 68 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:19,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 686 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-05 02:31:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-05 02:31:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-11-05 02:31:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 113 states have internal predecessors, (134), 26 states have call successors, (26), 12 states have call predecessors, (26), 17 states have return successors, (40), 24 states have call predecessors, (40), 24 states have call successors, (40) [2024-11-05 02:31:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2024-11-05 02:31:19,872 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 78 [2024-11-05 02:31:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:19,872 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2024-11-05 02:31:19,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:31:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2024-11-05 02:31:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 02:31:19,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:19,873 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:19,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-05 02:31:20,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:20,076 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:20,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1417990918, now seen corresponding path program 1 times [2024-11-05 02:31:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080565917] [2024-11-05 02:31:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:20,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:20,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:20,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-05 02:31:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:20,267 WARN L253 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-05 02:31:20,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:20,292 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 02:31:20,302 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 02:31:20,308 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 02:31:20,477 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 02:31:20,483 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 02:31:20,503 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 02:31:20,582 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:20,583 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 02:31:20,598 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:20,598 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 02:31:20,634 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:20,634 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 02:31:20,899 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:20,900 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 02:31:20,935 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:20,935 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 02:31:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:31:22,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:31:23,599 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080565917] [2024-11-05 02:31:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2080565917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:23,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2024-11-05 02:31:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380738259] [2024-11-05 02:31:23,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:23,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:31:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:31:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:31:23,600 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:31:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:27,225 INFO L93 Difference]: Finished difference Result 292 states and 393 transitions. [2024-11-05 02:31:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:31:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 78 [2024-11-05 02:31:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:27,230 INFO L225 Difference]: With dead ends: 292 [2024-11-05 02:31:27,231 INFO L226 Difference]: Without dead ends: 229 [2024-11-05 02:31:27,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:31:27,232 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 163 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:27,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 733 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-05 02:31:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-05 02:31:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 153. [2024-11-05 02:31:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 116 states have internal predecessors, (136), 26 states have call successors, (26), 12 states have call predecessors, (26), 18 states have return successors, (42), 24 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-05 02:31:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 204 transitions. [2024-11-05 02:31:27,280 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 204 transitions. Word has length 78 [2024-11-05 02:31:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:27,280 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 204 transitions. [2024-11-05 02:31:27,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:31:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 204 transitions. [2024-11-05 02:31:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-05 02:31:27,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:27,281 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:27,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-05 02:31:27,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:27,484 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:27,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash -978021101, now seen corresponding path program 1 times [2024-11-05 02:31:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963852570] [2024-11-05 02:31:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:27,485 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:27,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:27,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-05 02:31:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:27,679 WARN L253 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-05 02:31:27,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:27,691 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 02:31:27,700 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 02:31:27,705 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 02:31:27,888 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 02:31:27,898 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 02:31:28,007 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:28,008 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 02:31:28,028 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 02:31:28,035 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 02:31:28,054 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:28,055 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 02:31:28,085 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:28,085 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 02:31:28,364 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:28,364 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 02:31:28,392 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:28,392 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 02:31:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:31:30,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:31:31,597 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:31,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963852570] [2024-11-05 02:31:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [963852570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:31,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2024-11-05 02:31:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821576210] [2024-11-05 02:31:31,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:31,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-05 02:31:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:31,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-05 02:31:31,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:31:31,599 INFO L87 Difference]: Start difference. First operand 153 states and 204 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:31:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:34,629 INFO L93 Difference]: Finished difference Result 309 states and 418 transitions. [2024-11-05 02:31:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-05 02:31:34,629 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 80 [2024-11-05 02:31:34,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:34,631 INFO L225 Difference]: With dead ends: 309 [2024-11-05 02:31:34,631 INFO L226 Difference]: Without dead ends: 243 [2024-11-05 02:31:34,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:31:34,632 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 233 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:34,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 527 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-05 02:31:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-05 02:31:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 85. [2024-11-05 02:31:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 64 states have internal predecessors, (74), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-05 02:31:34,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2024-11-05 02:31:34,665 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 80 [2024-11-05 02:31:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:34,665 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2024-11-05 02:31:34,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:31:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2024-11-05 02:31:34,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-05 02:31:34,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:34,666 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:34,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-05 02:31:34,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:34,867 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:34,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1157454716, now seen corresponding path program 1 times [2024-11-05 02:31:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:34,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568055438] [2024-11-05 02:31:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:34,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:34,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:34,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-05 02:31:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:35,069 WARN L253 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-05 02:31:35,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:35,093 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 02:31:35,162 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 02:31:35,175 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 02:31:35,179 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 02:31:35,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:35,294 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 02:31:35,307 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 02:31:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:31:37,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:31:37,815 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:37,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568055438] [2024-11-05 02:31:37,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1568055438] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:31:37,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:31:37,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2024-11-05 02:31:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797256905] [2024-11-05 02:31:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:31:37,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:31:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:31:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:31:37,820 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-05 02:31:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:41,774 INFO L93 Difference]: Finished difference Result 235 states and 314 transitions. [2024-11-05 02:31:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:31:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 87 [2024-11-05 02:31:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:41,776 INFO L225 Difference]: With dead ends: 235 [2024-11-05 02:31:41,776 INFO L226 Difference]: Without dead ends: 168 [2024-11-05 02:31:41,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:31:41,777 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 60 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:41,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 776 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-05 02:31:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-05 02:31:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2024-11-05 02:31:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 118 states have internal predecessors, (138), 26 states have call successors, (26), 12 states have call predecessors, (26), 18 states have return successors, (42), 24 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-05 02:31:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2024-11-05 02:31:41,840 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 87 [2024-11-05 02:31:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:41,840 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2024-11-05 02:31:41,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-05 02:31:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2024-11-05 02:31:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 02:31:41,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:41,841 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:41,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-05 02:31:42,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:42,044 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:42,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2080112879, now seen corresponding path program 1 times [2024-11-05 02:31:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079015625] [2024-11-05 02:31:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:42,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:42,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:42,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:42,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-05 02:31:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:42,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-05 02:31:42,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:42,274 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 02:31:42,332 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 02:31:42,347 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 02:31:42,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:42,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:42,426 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 02:31:42,439 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 02:31:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:31:43,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:44,759 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 3114 treesize of output 3082 [2024-11-05 02:31:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:31:45,036 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:45,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079015625] [2024-11-05 02:31:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1079015625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:45,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:45,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-05 02:31:45,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620717115] [2024-11-05 02:31:45,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:45,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:31:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:31:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:31:45,038 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:31:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:48,929 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2024-11-05 02:31:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 02:31:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 89 [2024-11-05 02:31:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:48,931 INFO L225 Difference]: With dead ends: 256 [2024-11-05 02:31:48,931 INFO L226 Difference]: Without dead ends: 188 [2024-11-05 02:31:48,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-05 02:31:48,932 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 188 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:48,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1056 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-05 02:31:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-05 02:31:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2024-11-05 02:31:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 120 states have internal predecessors, (142), 27 states have call successors, (27), 12 states have call predecessors, (27), 18 states have return successors, (43), 25 states have call predecessors, (43), 25 states have call successors, (43) [2024-11-05 02:31:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 212 transitions. [2024-11-05 02:31:49,014 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 212 transitions. Word has length 89 [2024-11-05 02:31:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:49,014 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 212 transitions. [2024-11-05 02:31:49,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:31:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 212 transitions. [2024-11-05 02:31:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 02:31:49,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:49,016 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:49,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-05 02:31:49,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:49,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 197772806, now seen corresponding path program 1 times [2024-11-05 02:31:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073750946] [2024-11-05 02:31:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:49,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:49,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:49,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:49,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-05 02:31:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:49,436 WARN L253 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-05 02:31:49,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:49,453 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 02:31:49,463 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 02:31:49,471 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 02:31:49,597 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 02:31:49,612 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 02:31:49,623 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 02:31:49,702 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:49,702 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 02:31:49,715 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:49,715 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 02:31:49,749 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:49,749 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 02:31:50,022 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:50,023 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 02:31:50,053 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:50,053 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 02:31:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:31:56,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:31:57,373 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:57,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073750946] [2024-11-05 02:31:57,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2073750946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:57,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:57,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7] total 25 [2024-11-05 02:31:57,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438771834] [2024-11-05 02:31:57,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:57,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:31:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:31:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:31:57,379 INFO L87 Difference]: Start difference. First operand 158 states and 212 transitions. Second operand has 25 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 7 states have call successors, (19), 4 states have call predecessors, (19), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:32:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:32:03,825 INFO L93 Difference]: Finished difference Result 321 states and 434 transitions. [2024-11-05 02:32:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-05 02:32:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 7 states have call successors, (19), 4 states have call predecessors, (19), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 89 [2024-11-05 02:32:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:32:03,827 INFO L225 Difference]: With dead ends: 321 [2024-11-05 02:32:03,828 INFO L226 Difference]: Without dead ends: 253 [2024-11-05 02:32:03,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:32:03,829 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 120 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:32:03,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1293 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-05 02:32:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-05 02:32:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2024-11-05 02:32:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 121 states have internal predecessors, (143), 27 states have call successors, (27), 12 states have call predecessors, (27), 18 states have return successors, (43), 25 states have call predecessors, (43), 25 states have call successors, (43) [2024-11-05 02:32:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 213 transitions. [2024-11-05 02:32:03,909 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 213 transitions. Word has length 89 [2024-11-05 02:32:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:32:03,910 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 213 transitions. [2024-11-05 02:32:03,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.391304347826087) internal successors, (101), 22 states have internal predecessors, (101), 7 states have call successors, (19), 4 states have call predecessors, (19), 8 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:32:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 213 transitions. [2024-11-05 02:32:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-05 02:32:03,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:32:03,911 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:32:03,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-05 02:32:04,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:32:04,114 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:32:04,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:32:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1923404870, now seen corresponding path program 1 times [2024-11-05 02:32:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:32:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44583111] [2024-11-05 02:32:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:32:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:32:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:32:04,117 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:32:04,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-05 02:32:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:32:04,332 WARN L253 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-05 02:32:04,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:32:04,346 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 02:32:04,414 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 02:32:04,423 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 02:32:04,544 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:32:04,545 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 02:32:04,558 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 02:32:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:32:07,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:32:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 02:32:08,636 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:32:08,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44583111] [2024-11-05 02:32:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [44583111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:32:08,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:32:08,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 6] total 26 [2024-11-05 02:32:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473735261] [2024-11-05 02:32:08,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:32:08,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 02:32:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:32:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 02:32:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:32:08,638 INFO L87 Difference]: Start difference. First operand 159 states and 213 transitions. Second operand has 26 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (19), 3 states have call predecessors, (19), 9 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18)