/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_next_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:28:37,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:28:37,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:28:37,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:28:37,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:28:37,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:28:37,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:28:37,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:28:37,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:28:37,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:28:37,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:28:37,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:28:37,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:28:37,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:28:37,265 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:28:37,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:28:37,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:28:37,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:28:37,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:28:37,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:28:37,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:28:37,267 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:28:37,267 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:28:37,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:28:37,268 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:28:37,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:28:37,268 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:28:37,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:28:37,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:28:37,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:28:37,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:28:37,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:28:37,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:28:37,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:28:37,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:28:37,270 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:28:37,270 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:28:37,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:28:37,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:28:37,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:28:37,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:28:37,275 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:37,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:28:37,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:28:37,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:28:37,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:28:37,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:28:37,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 02:28:38,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:28:39,137 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:28:39,138 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 02:28:39,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12b847d1/756b628cd212436596bbf5b45b005dac/FLAGc83671579 [2024-11-05 02:28:39,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12b847d1/756b628cd212436596bbf5b45b005dac [2024-11-05 02:28:39,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:28:39,183 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:28:39,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:28:39,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:28:39,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:28:39,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:28:39" (1/1) ... [2024-11-05 02:28:39,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136dd401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:39, skipping insertion in model container [2024-11-05 02:28:39,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:28:39" (1/1) ... [2024-11-05 02:28:39,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:28:39,463 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 02:28:39,471 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 02:28:39,867 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,951 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,952 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,952 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,963 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,966 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,966 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,967 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,969 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,970 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,971 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,972 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,978 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,978 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,979 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,979 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,980 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,980 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,981 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,981 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,982 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,983 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,983 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,983 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:39,984 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:39,984 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,220 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,220 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,221 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,221 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,335 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:40,365 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:28:40,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:28:40,389 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 02:28:40,389 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 02:28:40,413 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,425 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,426 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,426 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,434 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,435 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,435 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,435 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,436 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,436 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,436 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,441 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,442 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,443 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,443 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,445 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,446 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,446 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,446 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,447 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,447 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,447 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,447 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,448 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,448 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,455 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,456 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,456 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,456 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,500 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,500 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,527 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:28:40,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:40,548 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:28:40,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 02:28:40,566 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 02:28:40,602 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,602 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,602 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,603 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,603 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,607 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,608 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,608 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,608 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,609 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,611 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,611 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,611 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:28:40,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:28:40,783 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:28:40,794 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:28:40,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40 WrapperNode [2024-11-05 02:28:40,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:28:40,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:28:40,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:28:40,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:28:40,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,878 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2024-11-05 02:28:40,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:28:40,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:28:40,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:28:40,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:28:40,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,916 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 4, 5, 6]. 35 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-11-05 02:28:40,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:28:40,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:28:40,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:28:40,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:28:40,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (1/1) ... [2024-11-05 02:28:40,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:28:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:28:40,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:28:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:28:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:28:41,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:28:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-05 02:28:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:28:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:28:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:28:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:28:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:28:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:28:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-05 02:28:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:28:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:28:41,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:28:41,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:28:41,426 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-05 02:28:41,426 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:28:41,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:28:41,437 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-05 02:28:41,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:28:41 BoogieIcfgContainer [2024-11-05 02:28:41,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:28:41,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:28:41,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:28:41,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:28:41,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:28:39" (1/3) ... [2024-11-05 02:28:41,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e84b588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:28:41, skipping insertion in model container [2024-11-05 02:28:41,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:28:40" (2/3) ... [2024-11-05 02:28:41,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e84b588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:28:41, skipping insertion in model container [2024-11-05 02:28:41,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:28:41" (3/3) ... [2024-11-05 02:28:41,444 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2024-11-05 02:28:41,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:28:41,456 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:28:41,499 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:28:41,503 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;@65966315, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:28:41,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:28:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 02:28:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 02:28:41,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:41,528 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:41,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:41,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash 401849526, now seen corresponding path program 1 times [2024-11-05 02:28:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990965052] [2024-11-05 02:28:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:41,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:41,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:28:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:41,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:28:41,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 02:28:41,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:41,786 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990965052] [2024-11-05 02:28:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1990965052] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:28:41,787 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:28:41,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 02:28:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220514529] [2024-11-05 02:28:41,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:41,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:28:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:28:41,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:28:41,812 INFO L87 Difference]: Start difference. First operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 02:28:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:41,829 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2024-11-05 02:28:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:28:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-05 02:28:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:41,837 INFO L225 Difference]: With dead ends: 94 [2024-11-05 02:28:41,838 INFO L226 Difference]: Without dead ends: 45 [2024-11-05 02:28:41,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:28:41,844 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:41,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:28:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-05 02:28:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-05 02:28:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 02:28:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-05 02:28:41,875 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2024-11-05 02:28:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:41,878 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-05 02:28:41,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 02:28:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-05 02:28:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 02:28:41,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:41,880 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:42,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:42,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:42,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash -619218828, now seen corresponding path program 1 times [2024-11-05 02:28:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:42,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136640575] [2024-11-05 02:28:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:42,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:42,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:42,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:28:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:42,237 WARN L253 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-05 02:28:42,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:42,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:42,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:42,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:42,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:42,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:42,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:42,423 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 27 treesize of output 1 [2024-11-05 02:28:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-05 02:28:43,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 02:28:44,238 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136640575] [2024-11-05 02:28:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [136640575] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:28:44,239 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:28:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2024-11-05 02:28:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686515084] [2024-11-05 02:28:44,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:44,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-05 02:28:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-05 02:28:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:28:44,241 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-05 02:28:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:45,772 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2024-11-05 02:28:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:28:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2024-11-05 02:28:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:45,776 INFO L225 Difference]: With dead ends: 56 [2024-11-05 02:28:45,777 INFO L226 Difference]: Without dead ends: 54 [2024-11-05 02:28:45,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:28:45,778 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 53 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:45,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 408 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-05 02:28:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-05 02:28:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-05 02:28:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 02:28:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-11-05 02:28:45,802 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 28 [2024-11-05 02:28:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:45,802 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-11-05 02:28:45,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-05 02:28:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-11-05 02:28:45,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 02:28:45,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:45,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:45,816 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 02:28:46,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:46,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:46,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1428565454, now seen corresponding path program 1 times [2024-11-05 02:28:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:46,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457888010] [2024-11-05 02:28:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:46,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:46,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:46,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:28:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:46,207 WARN L253 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-05 02:28:46,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:46,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:46,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:46,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:46,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:46,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:46,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:46,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:46,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 23 [2024-11-05 02:28:46,565 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:28:46,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-05 02:28:46,723 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:46,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:28:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 02:28:47,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 02:28:47,662 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457888010] [2024-11-05 02:28:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [457888010] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:47,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2024-11-05 02:28:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602947975] [2024-11-05 02:28:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:47,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 02:28:47,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 02:28:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:28:47,664 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 02:28:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:47,949 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-11-05 02:28:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 02:28:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-05 02:28:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:47,951 INFO L225 Difference]: With dead ends: 108 [2024-11-05 02:28:47,951 INFO L226 Difference]: Without dead ends: 58 [2024-11-05 02:28:47,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:28:47,952 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:47,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 226 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 02:28:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-05 02:28:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-05 02:28:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-05 02:28:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-11-05 02:28:47,962 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 28 [2024-11-05 02:28:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:47,962 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-11-05 02:28:47,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 02:28:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-11-05 02:28:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 02:28:47,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:47,963 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:47,967 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 02:28:48,164 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 02:28:48,165 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:48,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1821592464, now seen corresponding path program 1 times [2024-11-05 02:28:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699668511] [2024-11-05 02:28:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:48,166 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:48,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:48,172 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 02:28:48,173 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 02:28:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:48,268 WARN L253 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-05 02:28:48,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:48,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:48,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:48,307 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 27 treesize of output 1 [2024-11-05 02:28:48,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:48,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:48,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:48,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:48,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2024-11-05 02:28:48,575 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:28:48,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-05 02:28:48,733 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:48,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-05 02:28:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 02:28:48,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 02:28:49,059 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699668511] [2024-11-05 02:28:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1699668511] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 15 [2024-11-05 02:28:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721425604] [2024-11-05 02:28:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:49,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 02:28:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 02:28:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-05 02:28:49,061 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 02:28:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:49,104 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2024-11-05 02:28:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 02:28:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-05 02:28:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:49,110 INFO L225 Difference]: With dead ends: 115 [2024-11-05 02:28:49,110 INFO L226 Difference]: Without dead ends: 60 [2024-11-05 02:28:49,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-05 02:28:49,113 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:49,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 199 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:28:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-05 02:28:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-11-05 02:28:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 02:28:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-05 02:28:49,124 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2024-11-05 02:28:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:49,124 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-05 02:28:49,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 02:28:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-05 02:28:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 02:28:49,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:49,125 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:49,129 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 02:28:49,327 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 02:28:49,328 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:49,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash -239457674, now seen corresponding path program 1 times [2024-11-05 02:28:49,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:49,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581226735] [2024-11-05 02:28:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:49,331 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 02:28:49,332 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 02:28:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:49,460 WARN L253 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-05 02:28:49,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:49,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:49,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:49,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:49,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:49,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:49,537 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 27 treesize of output 1 [2024-11-05 02:28:49,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:50,840 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-05 02:28:50,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 87 [2024-11-05 02:28:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:50,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:51,859 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581226735] [2024-11-05 02:28:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [581226735] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2024-11-05 02:28:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631430645] [2024-11-05 02:28:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:51,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 02:28:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 02:28:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:51,861 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 02:28:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:52,508 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-05 02:28:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-05 02:28:52,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-05 02:28:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:52,509 INFO L225 Difference]: With dead ends: 65 [2024-11-05 02:28:52,509 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 02:28:52,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:28:52,510 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:52,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 371 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-05 02:28:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 02:28:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-05 02:28:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.15) internal successors, (46), 43 states have internal predecessors, (46), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 02:28:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2024-11-05 02:28:52,519 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 42 [2024-11-05 02:28:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:52,519 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2024-11-05 02:28:52,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 02:28:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2024-11-05 02:28:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 02:28:52,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:52,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:52,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:52,722 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 02:28:52,723 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:52,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1048804300, now seen corresponding path program 1 times [2024-11-05 02:28:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:52,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909554257] [2024-11-05 02:28:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:52,724 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 02:28:52,725 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 02:28:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:52,845 WARN L253 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-05 02:28:52,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:52,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:52,877 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 11 treesize of output 7 [2024-11-05 02:28:52,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:52,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:52,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:53,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:53,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2024-11-05 02:28:53,516 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:28:53,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-05 02:28:53,526 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:53,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:28:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:53,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:54,498 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909554257] [2024-11-05 02:28:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1909554257] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:28:54,498 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:28:54,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 8] imperfect sequences [] total 22 [2024-11-05 02:28:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837043184] [2024-11-05 02:28:54,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:54,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-05 02:28:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-05 02:28:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-05 02:28:54,500 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 22 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-05 02:28:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:56,566 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-11-05 02:28:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-05 02:28:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 42 [2024-11-05 02:28:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:56,568 INFO L225 Difference]: With dead ends: 110 [2024-11-05 02:28:56,568 INFO L226 Difference]: Without dead ends: 70 [2024-11-05 02:28:56,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:28:56,570 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 53 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:56,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 327 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-05 02:28:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-05 02:28:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-05 02:28:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 48 states have internal predecessors, (51), 13 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-05 02:28:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-05 02:28:56,581 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 42 [2024-11-05 02:28:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:56,581 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-05 02:28:56,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-05 02:28:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-05 02:28:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 02:28:56,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:56,582 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:56,585 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 02:28:56,784 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 02:28:56,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:56,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1441831310, now seen corresponding path program 1 times [2024-11-05 02:28:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:56,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553415405] [2024-11-05 02:28:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:56,785 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:56,787 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 02:28:56,788 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 02:28:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:56,902 WARN L253 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-05 02:28:56,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:56,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:56,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:56,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:56,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:56,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:57,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:57,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 48 [2024-11-05 02:28:57,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:57,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 31 [2024-11-05 02:28:57,589 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:57,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:28:57,622 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:57,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-05 02:28:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:57,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:28:58,062 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553415405] [2024-11-05 02:28:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [553415405] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:28:58,062 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:28:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 6] imperfect sequences [] total 16 [2024-11-05 02:28:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969969257] [2024-11-05 02:28:58,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:58,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 02:28:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 02:28:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-05 02:28:58,064 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-05 02:28:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:59,147 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2024-11-05 02:28:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-05 02:28:59,148 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 42 [2024-11-05 02:28:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:59,150 INFO L225 Difference]: With dead ends: 122 [2024-11-05 02:28:59,150 INFO L226 Difference]: Without dead ends: 72 [2024-11-05 02:28:59,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:28:59,151 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 36 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:59,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 340 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-05 02:28:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-05 02:28:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-05 02:28:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 45 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 02:28:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-05 02:28:59,170 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 42 [2024-11-05 02:28:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:59,170 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-05 02:28:59,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-05 02:28:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-05 02:28:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-05 02:28:59,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:59,173 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:59,177 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 02:28:59,374 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 02:28:59,374 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:59,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1432152549, now seen corresponding path program 1 times [2024-11-05 02:28:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676922652] [2024-11-05 02:28:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:59,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:59,378 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 02:28:59,379 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 02:28:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:59,539 WARN L253 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-05 02:28:59,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:59,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:59,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:28:59,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:28:59,587 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 11 treesize of output 7 [2024-11-05 02:28:59,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:28:59,609 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 19 treesize of output 11 [2024-11-05 02:28:59,618 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 27 treesize of output 1 [2024-11-05 02:29:00,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:00,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2024-11-05 02:29:00,604 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:29:00,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-05 02:29:00,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:29:00,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:29:01,245 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676922652] [2024-11-05 02:29:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1676922652] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2024-11-05 02:29:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288715824] [2024-11-05 02:29:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:01,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 02:29:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 02:29:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:29:01,247 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 02:29:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:01,393 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-11-05 02:29:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 02:29:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-05 02:29:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:01,395 INFO L225 Difference]: With dead ends: 69 [2024-11-05 02:29:01,395 INFO L226 Difference]: Without dead ends: 67 [2024-11-05 02:29:01,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-05 02:29:01,396 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 3 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:01,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 237 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 02:29:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-05 02:29:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-05 02:29:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 02:29:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-05 02:29:01,422 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 48 [2024-11-05 02:29:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:01,422 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-05 02:29:01,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 02:29:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-05 02:29:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 02:29:01,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:01,423 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:01,428 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 02:29:01,624 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 02:29:01,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:01,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1836428547, now seen corresponding path program 1 times [2024-11-05 02:29:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380429705] [2024-11-05 02:29:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:01,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:01,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:01,627 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 02:29:01,629 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 02:29:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:01,800 WARN L253 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-05 02:29:01,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:01,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:01,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:01,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:01,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:01,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:01,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-05 02:29:04,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 02:29:05,268 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380429705] [2024-11-05 02:29:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [380429705] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:05,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 29 [2024-11-05 02:29:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829718865] [2024-11-05 02:29:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:05,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 02:29:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 02:29:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-05 02:29:05,270 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:05,827 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2024-11-05 02:29:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 02:29:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-05 02:29:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:05,828 INFO L225 Difference]: With dead ends: 78 [2024-11-05 02:29:05,829 INFO L226 Difference]: Without dead ends: 76 [2024-11-05 02:29:05,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:29:05,829 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:05,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 282 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-05 02:29:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-05 02:29:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-05 02:29:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 02:29:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-05 02:29:05,847 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 63 [2024-11-05 02:29:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:05,847 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-05 02:29:05,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-05 02:29:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 02:29:05,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:05,848 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:05,852 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 02:29:06,048 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 02:29:06,049 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:06,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1027081921, now seen corresponding path program 1 times [2024-11-05 02:29:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965168283] [2024-11-05 02:29:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:06,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:06,052 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 02:29:06,053 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 02:29:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:06,188 WARN L253 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-05 02:29:06,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:06,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:06,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:06,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:06,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:06,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:07,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:07,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 23 [2024-11-05 02:29:07,471 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:29:07,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-05 02:29:07,717 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:07,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:29:08,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 02:29:09,560 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965168283] [2024-11-05 02:29:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [965168283] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:09,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:09,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24] total 29 [2024-11-05 02:29:09,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977415902] [2024-11-05 02:29:09,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:09,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 02:29:09,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 02:29:09,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-05 02:29:09,562 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:09,846 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-11-05 02:29:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 02:29:09,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-05 02:29:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:09,848 INFO L225 Difference]: With dead ends: 102 [2024-11-05 02:29:09,848 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 02:29:09,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:29:09,849 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 9 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:09,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 145 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 02:29:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 02:29:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-05 02:29:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.12) internal successors, (56), 54 states have internal predecessors, (56), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 02:29:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-05 02:29:09,862 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 63 [2024-11-05 02:29:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:09,862 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-05 02:29:09,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-05 02:29:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 02:29:09,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:09,863 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:09,868 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 02:29:10,065 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 02:29:10,065 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:10,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash 634054911, now seen corresponding path program 1 times [2024-11-05 02:29:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599075968] [2024-11-05 02:29:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:10,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:10,068 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 02:29:10,069 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 02:29:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:10,209 WARN L253 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-05 02:29:10,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:10,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:10,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:10,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:10,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:10,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:10,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:11,457 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:29:11,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-05 02:29:11,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:11,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2024-11-05 02:29:11,684 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:11,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-05 02:29:11,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 02:29:11,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 02:29:12,375 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599075968] [2024-11-05 02:29:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599075968] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 23 [2024-11-05 02:29:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047616020] [2024-11-05 02:29:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:12,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 02:29:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:12,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 02:29:12,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:29:12,377 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:12,400 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2024-11-05 02:29:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 02:29:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-05 02:29:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:12,402 INFO L225 Difference]: With dead ends: 103 [2024-11-05 02:29:12,402 INFO L226 Difference]: Without dead ends: 66 [2024-11-05 02:29:12,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 97 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:29:12,403 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:12,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:29:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-05 02:29:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-05 02:29:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 02:29:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-05 02:29:12,430 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2024-11-05 02:29:12,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:12,431 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-05 02:29:12,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 02:29:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-05 02:29:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 02:29:12,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:12,432 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:12,435 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 02:29:12,633 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 02:29:12,634 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:12,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1007142523, now seen corresponding path program 1 times [2024-11-05 02:29:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925455713] [2024-11-05 02:29:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:12,635 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:12,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:12,637 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 02:29:12,638 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 02:29:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:12,808 WARN L253 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-05 02:29:12,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:12,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:12,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:12,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:12,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:12,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:12,869 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 27 treesize of output 1 [2024-11-05 02:29:15,365 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-05 02:29:15,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 87 [2024-11-05 02:29:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-05 02:29:15,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 02:29:16,838 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:16,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925455713] [2024-11-05 02:29:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [925455713] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [23] total 34 [2024-11-05 02:29:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467675640] [2024-11-05 02:29:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:16,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:29:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:29:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 02:29:16,840 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:17,654 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-05 02:29:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 02:29:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 02:29:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:17,656 INFO L225 Difference]: With dead ends: 77 [2024-11-05 02:29:17,656 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 02:29:17,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2024-11-05 02:29:17,657 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 12 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:17,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 345 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-05 02:29:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 02:29:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-05 02:29:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 02:29:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-05 02:29:17,675 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 77 [2024-11-05 02:29:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:17,675 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-05 02:29:17,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-05 02:29:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 02:29:17,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:17,676 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:17,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-05 02:29:17,879 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 02:29:17,879 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:17,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 197795897, now seen corresponding path program 1 times [2024-11-05 02:29:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793393118] [2024-11-05 02:29:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:17,882 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 02:29:17,883 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 02:29:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:18,040 WARN L253 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-05 02:29:18,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:18,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:18,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:18,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:18,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:18,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:18,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:20,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:20,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2024-11-05 02:29:20,176 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-05 02:29:20,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-05 02:29:20,185 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:20,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-05 02:29:20,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 02:29:21,744 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793393118] [2024-11-05 02:29:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793393118] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [24] total 32 [2024-11-05 02:29:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119203710] [2024-11-05 02:29:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:21,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 02:29:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 02:29:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-11-05 02:29:21,746 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:22,302 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2024-11-05 02:29:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-05 02:29:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 02:29:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:22,303 INFO L225 Difference]: With dead ends: 86 [2024-11-05 02:29:22,303 INFO L226 Difference]: Without dead ends: 74 [2024-11-05 02:29:22,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 111 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:29:22,304 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:22,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 217 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-05 02:29:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-05 02:29:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-05 02:29:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 52 states have internal predecessors, (52), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 02:29:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2024-11-05 02:29:22,318 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 77 [2024-11-05 02:29:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:22,319 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2024-11-05 02:29:22,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2024-11-05 02:29:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 02:29:22,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:22,319 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:22,322 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 02:29:22,520 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 02:29:22,520 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:22,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash -195231113, now seen corresponding path program 1 times [2024-11-05 02:29:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201046993] [2024-11-05 02:29:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:22,524 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 02:29:22,525 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 02:29:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:22,681 WARN L253 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-05 02:29:22,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:22,691 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 02:29:22,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:22,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:22,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:22,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 02:29:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:24,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:24,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 48 [2024-11-05 02:29:24,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:24,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 31 [2024-11-05 02:29:24,749 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:24,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-05 02:29:24,756 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:24,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-05 02:29:24,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 02:29:25,491 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201046993] [2024-11-05 02:29:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [201046993] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [22] total 26 [2024-11-05 02:29:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014226719] [2024-11-05 02:29:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:25,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 02:29:25,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 02:29:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:29:25,492 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:25,604 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2024-11-05 02:29:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 02:29:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 02:29:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:25,605 INFO L225 Difference]: With dead ends: 87 [2024-11-05 02:29:25,605 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 02:29:25,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-05 02:29:25,606 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 5 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:25,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 269 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 02:29:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 02:29:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-05 02:29:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0) internal successors, (42), 42 states have internal predecessors, (42), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 02:29:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-05 02:29:25,616 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 77 [2024-11-05 02:29:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:25,616 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-05 02:29:25,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 02:29:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-05 02:29:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 02:29:25,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:29:25,617 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:25,620 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 02:29:25,817 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 02:29:25,818 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:29:25,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:29:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1385380010, now seen corresponding path program 1 times [2024-11-05 02:29:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:29:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837914908] [2024-11-05 02:29:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:29:25,818 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:25,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:29:25,821 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 02:29:25,821 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 02:29:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:29:26,018 WARN L253 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-05 02:29:26,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:29:26,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:29:26,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:26,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:26,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:29:26,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:29:26,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:26,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:29:28,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:28,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2024-11-05 02:29:28,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:29:28,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 30 [2024-11-05 02:29:28,386 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:28,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:28,393 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:29:28,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 02:29:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-05 02:29:28,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:29:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 02:29:29,219 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:29:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837914908] [2024-11-05 02:29:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [837914908] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:29:29,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:29:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [22] total 28 [2024-11-05 02:29:29,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629218686] [2024-11-05 02:29:29,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:29:29,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 02:29:29,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:29:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 02:29:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:29:29,220 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 02:29:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:29:29,409 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-11-05 02:29:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 02:29:29,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2024-11-05 02:29:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:29:29,410 INFO L225 Difference]: With dead ends: 63 [2024-11-05 02:29:29,410 INFO L226 Difference]: Without dead ends: 0 [2024-11-05 02:29:29,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:29:29,411 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:29:29,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 252 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 02:29:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-05 02:29:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-05 02:29:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-05 02:29:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-05 02:29:29,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2024-11-05 02:29:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:29:29,412 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-05 02:29:29,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 02:29:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-05 02:29:29,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-05 02:29:29,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-05 02:29:29,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-05 02:29:29,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:29:29,619 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:29:29,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-05 02:30:04,466 WARN L286 SmtUtils]: Spent 32.55s on a formula simplification. DAG size of input: 184 DAG size of output: 69 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)