/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_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:27:15,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:27:15,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:27:15,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:27:15,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:27:15,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:27:15,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:27:15,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:27:15,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:27:15,239 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:27:15,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:27:15,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:27:15,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:27:15,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:27:15,241 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:27:15,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:27:15,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:27:15,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:27:15,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:27:15,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:27:15,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:27:15,252 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:27:15,252 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:27:15,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:27:15,252 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:27:15,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:27:15,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:27:15,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:27:15,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:27:15,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:27:15,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:27:15,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:15,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:27:15,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:27:15,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:27:15,255 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:27:15,255 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:27:15,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:27:15,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:27:15,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:27:15,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:27:15,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:15,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:27:15,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:27:15,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:27:15,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:27:15,589 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:27:15,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-05 02:27:17,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:27:17,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:27:17,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-05 02:27:17,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d58cca4/bb1a114ce7d84fb595e909b08572217f/FLAGc24d626a2 [2024-11-05 02:27:17,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2d58cca4/bb1a114ce7d84fb595e909b08572217f [2024-11-05 02:27:17,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:27:17,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:27:17,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:17,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:27:17,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:27:17,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:17" (1/1) ... [2024-11-05 02:27:17,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757362f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:17, skipping insertion in model container [2024-11-05 02:27:17,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:17" (1/1) ... [2024-11-05 02:27:17,727 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:18,071 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_back_harness.i[4494,4507] [2024-11-05 02:27:18,086 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_back_harness.i[4554,4567] [2024-11-05 02:27:19,295 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,451 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,452 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,453 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,462 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,465 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,466 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,466 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,467 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,467 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,468 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,471 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,472 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,474 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,475 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,487 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,491 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,492 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,492 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,494 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,495 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,495 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,495 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,497 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,498 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:19,499 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,499 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 02:27:19,499 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:19,500 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,295 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,295 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,296 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,296 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,463 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:20,514 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:27:20,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:20,567 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_back_harness.i[4494,4507] [2024-11-05 02:27:20,568 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_back_harness.i[4554,4567] [2024-11-05 02:27:20,600 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,627 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,628 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,628 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,641 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,642 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,644 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,644 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,645 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,645 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,646 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,652 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,653 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,655 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,655 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,669 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,674 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,675 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,675 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,677 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,677 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,677 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,678 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,679 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,679 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,680 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,742 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,743 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,744 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,744 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,780 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:20,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:20,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:27:20,904 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_back_harness.i[4494,4507] [2024-11-05 02:27:20,905 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_back_harness.i[4554,4567] [2024-11-05 02:27:20,952 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,952 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,953 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,953 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,953 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,960 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,964 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,965 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,966 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,966 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,967 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:20,967 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:21,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:21,207 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:27:21,217 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:27:21,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21 WrapperNode [2024-11-05 02:27:21,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:21,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:21,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:27:21,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:27:21,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,357 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 136 [2024-11-05 02:27:21,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:21,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:27:21,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:27:21,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:27:21,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,405 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 5, 20]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 02:27:21,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:27:21,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:27:21,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:27:21,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:27:21,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (1/1) ... [2024-11-05 02:27:21,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:21,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:27:21,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:27:21,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2024-11-05 02:27:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:27:21,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:27:21,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:27:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:27:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:27:21,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 02:27:21,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:27:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:27:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:27:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:27:21,519 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 02:27:21,817 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:27:21,821 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:27:22,304 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-05 02:27:22,304 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:27:22,321 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:27:22,322 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 02:27:22,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:22 BoogieIcfgContainer [2024-11-05 02:27:22,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:27:22,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:27:22,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:27:22,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:27:22,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:27:17" (1/3) ... [2024-11-05 02:27:22,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:22, skipping insertion in model container [2024-11-05 02:27:22,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:21" (2/3) ... [2024-11-05 02:27:22,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e5a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:22, skipping insertion in model container [2024-11-05 02:27:22,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:22" (3/3) ... [2024-11-05 02:27:22,334 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2024-11-05 02:27:22,352 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:27:22,352 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:27:22,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:27:22,422 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;@3281ee8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:27:22,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:27:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-05 02:27:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 02:27:22,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:22,439 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:22,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:22,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -722894815, now seen corresponding path program 1 times [2024-11-05 02:27:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:22,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127477336] [2024-11-05 02:27:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:22,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:22,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:27:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:22,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:27:22,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-05 02:27:22,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-05 02:27:22,946 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127477336] [2024-11-05 02:27:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [127477336] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:22,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:22,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:27:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016906328] [2024-11-05 02:27:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:22,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:27:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:27:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:27:22,987 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 02:27:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:23,019 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-05 02:27:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:27:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-05 02:27:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:23,030 INFO L225 Difference]: With dead ends: 188 [2024-11-05 02:27:23,030 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 02:27:23,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:27:23,046 INFO L432 NwaCegarLoop]: 127 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, 127 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:23,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:27:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 02:27:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-05 02:27:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-05 02:27:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-05 02:27:23,111 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-05 02:27:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:23,114 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-05 02:27:23,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 02:27:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-05 02:27:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 02:27:23,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:23,121 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:23,125 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 02:27:23,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:23,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:23,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:23,323 INFO L85 PathProgramCache]: Analyzing trace with hash -723996839, now seen corresponding path program 1 times [2024-11-05 02:27:23,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:23,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472517300] [2024-11-05 02:27:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:23,324 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:23,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:23,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:23,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:27:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:23,555 WARN L253 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-05 02:27:23,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:23,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:23,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:23,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:23,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:24,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:24,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:24,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-05 02:27:26,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:29,636 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 1646 treesize of output 1630 [2024-11-05 02:27:29,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:27:29,799 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 02:27:29,808 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 242 treesize of output 234 [2024-11-05 02:27:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-05 02:27:30,638 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472517300] [2024-11-05 02:27:30,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [472517300] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:30,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2024-11-05 02:27:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285316745] [2024-11-05 02:27:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:30,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:27:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:27:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:27:30,645 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-05 02:27:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:32,101 INFO L93 Difference]: Finished difference Result 185 states and 241 transitions. [2024-11-05 02:27:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:27:32,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 84 [2024-11-05 02:27:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:32,106 INFO L225 Difference]: With dead ends: 185 [2024-11-05 02:27:32,106 INFO L226 Difference]: Without dead ends: 94 [2024-11-05 02:27:32,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:27:32,108 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 6 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:32,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 563 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-05 02:27:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-05 02:27:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-05 02:27:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 62 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-05 02:27:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 123 transitions. [2024-11-05 02:27:32,122 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 123 transitions. Word has length 84 [2024-11-05 02:27:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:32,124 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 123 transitions. [2024-11-05 02:27:32,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-05 02:27:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 123 transitions. [2024-11-05 02:27:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 02:27:32,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:32,128 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:32,136 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 02:27:32,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:32,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:32,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1559848631, now seen corresponding path program 1 times [2024-11-05 02:27:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005807447] [2024-11-05 02:27:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:32,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:32,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:27:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:32,548 WARN L253 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-05 02:27:32,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:32,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:32,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:32,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:27:32,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:32,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:33,103 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:27:33,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:27:33,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:33,229 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:27:33,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:27:33,286 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:27:33,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:27:33,875 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:27:33,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:27:33,935 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:27:33,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:27:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-05 02:27:42,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-05 02:27:43,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005807447] [2024-11-05 02:27:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005807447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:27:43,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:27:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 6] total 24 [2024-11-05 02:27:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002921959] [2024-11-05 02:27:43,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:27:43,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 02:27:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 02:27:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:27:43,794 INFO L87 Difference]: Start difference. First operand 94 states and 123 transitions. Second operand has 24 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:27:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:52,836 INFO L93 Difference]: Finished difference Result 261 states and 347 transitions. [2024-11-05 02:27:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-05 02:27:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 86 [2024-11-05 02:27:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:52,841 INFO L225 Difference]: With dead ends: 261 [2024-11-05 02:27:52,842 INFO L226 Difference]: Without dead ends: 186 [2024-11-05 02:27:52,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:27:52,843 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 60 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:52,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1157 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-05 02:27:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-05 02:27:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 100. [2024-11-05 02:27:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 67 states have internal predecessors, (80), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 02:27:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2024-11-05 02:27:52,867 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 86 [2024-11-05 02:27:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:52,868 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2024-11-05 02:27:52,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.45) internal successors, (89), 19 states have internal predecessors, (89), 9 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:27:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2024-11-05 02:27:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 02:27:52,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:52,870 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:27:52,873 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 02:27:53,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:53,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:53,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2134074355, now seen corresponding path program 1 times [2024-11-05 02:27:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424341384] [2024-11-05 02:27:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:53,073 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:53,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:53,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:53,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 02:27:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:53,256 WARN L253 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-05 02:27:53,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:53,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:53,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:27:53,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:53,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:53,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:53,666 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:27:53,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:27:53,693 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:27:53,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:27:53,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:27:53,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:53,734 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:27:53,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:27:54,113 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:27:54,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 159 treesize of output 109 [2024-11-05 02:27:54,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-05 02:27:54,166 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:27:54,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-05 02:28:00,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 02:28:01,949 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424341384] [2024-11-05 02:28:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1424341384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:01,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:01,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 25 [2024-11-05 02:28:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526441415] [2024-11-05 02:28:01,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:01,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:28:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:28:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:01,951 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand has 25 states, 22 states have (on average 4.318181818181818) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:28:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:07,597 INFO L93 Difference]: Finished difference Result 272 states and 360 transitions. [2024-11-05 02:28:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-05 02:28:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.318181818181818) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) Word has length 88 [2024-11-05 02:28:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:07,601 INFO L225 Difference]: With dead ends: 272 [2024-11-05 02:28:07,601 INFO L226 Difference]: Without dead ends: 190 [2024-11-05 02:28:07,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 146 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:28:07,603 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 135 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:07,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 967 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-05 02:28:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-05 02:28:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 100. [2024-11-05 02:28:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 67 states have internal predecessors, (79), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 02:28:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 128 transitions. [2024-11-05 02:28:07,629 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 128 transitions. Word has length 88 [2024-11-05 02:28:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:07,630 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 128 transitions. [2024-11-05 02:28:07,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.318181818181818) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:28:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 128 transitions. [2024-11-05 02:28:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-05 02:28:07,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:07,634 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:07,641 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 02:28:07,834 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 02:28:07,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:07,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash -447358496, now seen corresponding path program 1 times [2024-11-05 02:28:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042918758] [2024-11-05 02:28:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:07,836 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:07,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:07,839 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 02:28:07,840 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 02:28:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:08,000 WARN L253 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-05 02:28:08,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:08,016 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 02:28:08,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:08,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:08,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:08,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:08,401 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:08,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:08,427 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:08,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:08,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:08,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-05 02:28:08,498 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:08,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:08,896 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:08,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:08,936 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:08,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-05 02:28:15,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-05 02:28:16,689 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042918758] [2024-11-05 02:28:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1042918758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:16,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:16,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2024-11-05 02:28:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895524074] [2024-11-05 02:28:16,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:16,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 02:28:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 02:28:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:28:16,692 INFO L87 Difference]: Start difference. First operand 100 states and 128 transitions. Second operand has 28 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:28:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:24,345 INFO L93 Difference]: Finished difference Result 284 states and 377 transitions. [2024-11-05 02:28:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-05 02:28:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) Word has length 90 [2024-11-05 02:28:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:24,347 INFO L225 Difference]: With dead ends: 284 [2024-11-05 02:28:24,347 INFO L226 Difference]: Without dead ends: 200 [2024-11-05 02:28:24,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 147 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:28:24,349 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 128 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:24,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1098 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-05 02:28:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-05 02:28:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 101. [2024-11-05 02:28:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 68 states have internal predecessors, (80), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 02:28:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2024-11-05 02:28:24,379 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 90 [2024-11-05 02:28:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:24,380 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2024-11-05 02:28:24,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 9 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-05 02:28:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2024-11-05 02:28:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-05 02:28:24,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:24,381 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:28:24,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-05 02:28:24,581 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 02:28:24,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:24,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 83123528, now seen corresponding path program 1 times [2024-11-05 02:28:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:24,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497240269] [2024-11-05 02:28:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:24,583 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:24,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:24,584 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 02:28:24,585 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 02:28:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:24,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-05 02:28:24,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:24,773 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 02:28:24,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:24,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:24,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:24,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:24,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:25,048 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:25,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:25,089 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2024-11-05 02:28:25,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2024-11-05 02:28:25,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-05 02:28:25,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 16 [2024-11-05 02:28:25,195 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:25,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:25,236 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:25,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:25,741 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:25,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 173 treesize of output 119 [2024-11-05 02:28:25,793 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:25,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:25,862 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-05 02:28:25,867 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 17 treesize of output 9 [2024-11-05 02:28:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 02:28:32,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-05 02:28:32,983 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497240269] [2024-11-05 02:28:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1497240269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:32,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3] total 19 [2024-11-05 02:28:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404369865] [2024-11-05 02:28:32,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:28:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:28:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:28:32,985 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 7 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-05 02:28:40,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:40,653 INFO L93 Difference]: Finished difference Result 275 states and 368 transitions. [2024-11-05 02:28:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 02:28:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 7 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 91 [2024-11-05 02:28:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:40,656 INFO L225 Difference]: With dead ends: 275 [2024-11-05 02:28:40,656 INFO L226 Difference]: Without dead ends: 198 [2024-11-05 02:28:40,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-05 02:28:40,658 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 90 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:40,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 892 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-05 02:28:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-05 02:28:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 102. [2024-11-05 02:28:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.208955223880597) internal successors, (81), 69 states have internal predecessors, (81), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 02:28:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2024-11-05 02:28:40,689 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 91 [2024-11-05 02:28:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:40,690 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2024-11-05 02:28:40,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 7 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-05 02:28:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2024-11-05 02:28:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-05 02:28:40,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:40,691 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 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 02:28:40,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:40,891 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 02:28:40,892 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:40,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1372557622, now seen corresponding path program 1 times [2024-11-05 02:28:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125264457] [2024-11-05 02:28:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:40,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:40,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:40,894 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 02:28:40,895 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 02:28:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:41,076 WARN L253 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-11-05 02:28:41,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:41,089 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 02:28:41,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:41,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:41,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:41,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:41,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-05 02:28:41,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:41,375 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:41,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:41,402 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:41,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:41,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-05 02:28:41,423 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 8 treesize of output 1 [2024-11-05 02:28:41,444 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:41,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:41,753 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:41,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:41,782 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:41,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71