/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 13:58:19,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 13:58:19,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 13:58:19,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 13:58:19,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 13:58:19,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 13:58:19,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 13:58:19,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 13:58:19,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 13:58:19,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 13:58:19,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 13:58:19,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 13:58:19,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 13:58:19,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 13:58:19,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 13:58:19,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 13:58:19,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 13:58:19,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 13:58:19,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 13:58:19,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 13:58:19,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 13:58:19,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 13:58:19,852 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 13:58:19,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 13:58:19,853 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 13:58:19,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 13:58:19,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 13:58:19,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 13:58:19,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 13:58:19,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 13:58:19,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 13:58:19,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:19,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 13:58:19,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 13:58:19,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 13:58:19,858 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 13:58:19,858 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 13:58:19,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 13:58:19,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 13:58:19,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 13:58:19,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 13:58:19,860 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 13:58:20,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 13:58:20,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 13:58:20,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 13:58:20,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 13:58:20,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 13:58:20,202 INFO L431 ainManager$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 13:58:21,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 13:58:22,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 13:58:22,190 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-05 13:58:22,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaf0daaa/01833791c3614a33b7a15461a4f19b70/FLAGc2f924d3e [2024-11-05 13:58:22,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaf0daaa/01833791c3614a33b7a15461a4f19b70 [2024-11-05 13:58:22,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 13:58:22,254 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 13:58:22,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:22,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 13:58:22,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 13:58:22,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:22" (1/1) ... [2024-11-05 13:58:22,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4cf259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:22, skipping insertion in model container [2024-11-05 13:58:22,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:22" (1/1) ... [2024-11-05 13:58:22,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:22,732 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 13:58:22,740 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 13:58:23,560 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,636 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,637 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,638 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,653 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 13:58:23,655 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,656 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,656 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,657 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,657 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,658 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,665 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,665 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,668 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,668 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,696 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,697 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,697 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,698 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,700 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,700 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,700 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,701 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,702 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,705 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,706 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,706 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:23,706 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:23,707 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,029 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,030 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,031 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,031 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,169 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:24,207 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 13:58:24,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:24,243 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 13:58:24,243 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 13:58:24,271 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,287 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,287 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,290 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,295 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 13:58:24,297 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,298 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,298 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,298 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,299 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,299 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,302 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,303 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,304 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,304 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,311 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,313 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,313 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,313 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,314 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,314 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,315 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,315 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,316 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,316 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,316 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,317 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,317 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,317 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,371 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,371 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,372 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,372 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,407 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:24,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:24,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 13:58:24,437 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 13:58:24,437 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 13:58:24,482 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,482 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,483 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,483 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,483 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,490 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,490 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,491 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,491 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,492 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,495 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,495 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,495 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:24,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:24,806 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 13:58:24,817 INFO L204 MainTranslator]: Completed translation [2024-11-05 13:58:24,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24 WrapperNode [2024-11-05 13:58:24,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:24,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:24,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 13:58:24,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 13:58:24,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:24,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:24,957 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 136 [2024-11-05 13:58:24,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:24,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 13:58:24,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 13:58:24,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 13:58:24,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:24,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:24,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,007 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 20, 5]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2024-11-05 13:58:25,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 13:58:25,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 13:58:25,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 13:58:25,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 13:58:25,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (1/1) ... [2024-11-05 13:58:25,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 13:58:25,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 13:58:25,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 13:58:25,120 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2024-11-05 13:58:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 13:58:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:25,121 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 13:58:25,121 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 13:58:25,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 13:58:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 13:58:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 13:58:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 13:58:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 13:58:25,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 13:58:25,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 13:58:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 13:58:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 13:58:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 13:58:25,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 13:58:25,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 13:58:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 13:58:25,124 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:58:25,124 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:58:25,415 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 13:58:25,417 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 13:58:25,807 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-05 13:58:25,807 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 13:58:25,824 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 13:58:25,824 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 13:58:25,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:25 BoogieIcfgContainer [2024-11-05 13:58:25,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 13:58:25,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 13:58:25,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 13:58:25,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 13:58:25,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:58:22" (1/3) ... [2024-11-05 13:58:25,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dff77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:25, skipping insertion in model container [2024-11-05 13:58:25,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:24" (2/3) ... [2024-11-05 13:58:25,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dff77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:25, skipping insertion in model container [2024-11-05 13:58:25,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:25" (3/3) ... [2024-11-05 13:58:25,832 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2024-11-05 13:58:25,847 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 13:58:25,848 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 13:58:25,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 13:58:25,911 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;@523c86e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 13:58:25,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 13:58:25,915 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 13:58:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 13:58:25,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:25,927 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 13:58:25,928 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:25,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash -722894815, now seen corresponding path program 1 times [2024-11-05 13:58:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486266916] [2024-11-05 13:58:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:25,944 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:25,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:25,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:25,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 13:58:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:26,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 13:58:26,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-05 13:58:26,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:26,267 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 13:58:26,268 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:26,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486266916] [2024-11-05 13:58:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [486266916] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:26,269 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:26,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 13:58:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210743002] [2024-11-05 13:58:26,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:26,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 13:58:26,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 13:58:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:58:26,302 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 13:58:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:26,331 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-05 13:58:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 13:58:26,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2024-11-05 13:58:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:26,340 INFO L225 Difference]: With dead ends: 188 [2024-11-05 13:58:26,341 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 13:58:26,348 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 13:58:26,353 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 13:58:26,355 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 13:58:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 13:58:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-05 13:58:26,399 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 13:58:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-05 13:58:26,404 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-05 13:58:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:26,405 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-05 13:58:26,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-05 13:58:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-05 13:58:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 13:58:26,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:26,411 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 13:58:26,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 13:58:26,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:26,612 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:26,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash -723996839, now seen corresponding path program 1 times [2024-11-05 13:58:26,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:26,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141799540] [2024-11-05 13:58:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:26,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:26,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:26,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 13:58:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:26,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 13:58:26,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 13:58:26,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-05 13:58:26,975 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141799540] [2024-11-05 13:58:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [141799540] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 13:58:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345250504] [2024-11-05 13:58:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:26,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 13:58:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 13:58:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:58:26,978 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:27,074 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-11-05 13:58:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:58:27,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2024-11-05 13:58:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:27,080 INFO L225 Difference]: With dead ends: 169 [2024-11-05 13:58:27,080 INFO L226 Difference]: Without dead ends: 95 [2024-11-05 13:58:27,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:58:27,081 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:27,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-05 13:58:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-05 13:58:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 13:58:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2024-11-05 13:58:27,095 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 84 [2024-11-05 13:58:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:27,096 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2024-11-05 13:58:27,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2024-11-05 13:58:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 13:58:27,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:27,100 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] [2024-11-05 13:58:27,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 13:58:27,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:27,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2086865941, now seen corresponding path program 1 times [2024-11-05 13:58:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719826305] [2024-11-05 13:58:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:27,304 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:27,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:27,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 13:58:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:27,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 13:58:27,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 13:58:27,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-05 13:58:27,603 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719826305] [2024-11-05 13:58:27,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1719826305] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:27,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:27,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 13:58:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194923711] [2024-11-05 13:58:27,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:27,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 13:58:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:27,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 13:58:27,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:27,607 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:27,690 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2024-11-05 13:58:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 13:58:27,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2024-11-05 13:58:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:27,693 INFO L225 Difference]: With dead ends: 174 [2024-11-05 13:58:27,693 INFO L226 Difference]: Without dead ends: 98 [2024-11-05 13:58:27,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:27,694 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:27,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 671 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-05 13:58:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-05 13:58:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 64 states have internal predecessors, (77), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 13:58:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2024-11-05 13:58:27,710 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 86 [2024-11-05 13:58:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:27,710 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2024-11-05 13:58:27,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2024-11-05 13:58:27,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 13:58:27,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:27,712 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 13:58:27,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-05 13:58:27,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:27,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:27,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1429995906, now seen corresponding path program 1 times [2024-11-05 13:58:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568920869] [2024-11-05 13:58:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:27,919 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:27,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:27,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 13:58:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:28,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:28,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 13:58:28,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-05 13:58:28,255 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:28,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568920869] [2024-11-05 13:58:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [568920869] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:28,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 13:58:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939504926] [2024-11-05 13:58:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:28,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:28,258 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:28,359 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-11-05 13:58:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 13:58:28,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 88 [2024-11-05 13:58:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:28,361 INFO L225 Difference]: With dead ends: 178 [2024-11-05 13:58:28,361 INFO L226 Difference]: Without dead ends: 101 [2024-11-05 13:58:28,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:28,362 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 4 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:28,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 771 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-05 13:58:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-05 13:58:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 13:58:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2024-11-05 13:58:28,372 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 88 [2024-11-05 13:58:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:28,372 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2024-11-05 13:58:28,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:58:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2024-11-05 13:58:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 13:58:28,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:28,374 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] [2024-11-05 13:58:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 13:58:28,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:28,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:28,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1848432154, now seen corresponding path program 1 times [2024-11-05 13:58:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641278786] [2024-11-05 13:58:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:28,576 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:28,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:28,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:28,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 13:58:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:28,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 13:58:28,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 13:58:28,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-05 13:58:28,921 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641278786] [2024-11-05 13:58:28,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641278786] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:28,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3] total 9 [2024-11-05 13:58:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85702098] [2024-11-05 13:58:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:28,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:28,923 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-05 13:58:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:29,179 INFO L93 Difference]: Finished difference Result 183 states and 246 transitions. [2024-11-05 13:58:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:58:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 89 [2024-11-05 13:58:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:29,181 INFO L225 Difference]: With dead ends: 183 [2024-11-05 13:58:29,182 INFO L226 Difference]: Without dead ends: 105 [2024-11-05 13:58:29,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:29,183 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 35 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:29,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 662 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 13:58:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-05 13:58:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-05 13:58:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 67 states have internal predecessors, (81), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-05 13:58:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-11-05 13:58:29,196 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 89 [2024-11-05 13:58:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:29,197 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-11-05 13:58:29,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-05 13:58:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-11-05 13:58:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:58:29,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:29,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:29,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 13:58:29,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:29,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:29,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash -913140813, now seen corresponding path program 1 times [2024-11-05 13:58:29,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:29,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884713684] [2024-11-05 13:58:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:29,403 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:29,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:29,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 13:58:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:29,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-05 13:58:29,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:29,686 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 13:58:29,721 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 13:58:29,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:29,905 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 13:58:29,931 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 13:58:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-05 13:58:35,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:58:36,638 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:36,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884713684] [2024-11-05 13:58:36,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1884713684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:36,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:36,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-05 13:58:36,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359609215] [2024-11-05 13:58:36,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:36,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 13:58:36,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 13:58:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-05 13:58:36,641 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 18 states have internal predecessors, (96), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-05 13:58:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:40,536 INFO L93 Difference]: Finished difference Result 273 states and 369 transitions. [2024-11-05 13:58:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-05 13:58:40,537 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 18 states have internal predecessors, (96), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-05 13:58:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:40,540 INFO L225 Difference]: With dead ends: 273 [2024-11-05 13:58:40,540 INFO L226 Difference]: Without dead ends: 208 [2024-11-05 13:58:40,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:58:40,541 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 126 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:40,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1088 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-05 13:58:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-05 13:58:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 201. [2024-11-05 13:58:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 135 states have (on average 1.2740740740740741) internal successors, (172), 140 states have internal predecessors, (172), 46 states have call successors, (46), 16 states have call predecessors, (46), 19 states have return successors, (50), 44 states have call predecessors, (50), 44 states have call successors, (50) [2024-11-05 13:58:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 268 transitions. [2024-11-05 13:58:40,577 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 268 transitions. Word has length 100 [2024-11-05 13:58:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:40,578 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 268 transitions. [2024-11-05 13:58:40,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 18 states have internal predecessors, (96), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-05 13:58:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 268 transitions. [2024-11-05 13:58:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:58:40,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:40,580 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, 1] [2024-11-05 13:58:40,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 13:58:40,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:40,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:40,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1722487439, now seen corresponding path program 1 times [2024-11-05 13:58:40,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425235840] [2024-11-05 13:58:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:40,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:40,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:40,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 13:58:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:40,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 13:58:40,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:40,957 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 13:58:40,976 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 13:58:41,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:41,059 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 13:58:41,100 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 13:58:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 13:58:48,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:58:49,470 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425235840] [2024-11-05 13:58:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1425235840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:49,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:49,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2024-11-05 13:58:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792482436] [2024-11-05 13:58:49,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:49,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 13:58:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 13:58:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-05 13:58:49,473 INFO L87 Difference]: Start difference. First operand 201 states and 268 transitions. Second operand has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-05 13:58:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:58,666 INFO L93 Difference]: Finished difference Result 454 states and 610 transitions. [2024-11-05 13:58:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-05 13:58:58,667 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 100 [2024-11-05 13:58:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:58,669 INFO L225 Difference]: With dead ends: 454 [2024-11-05 13:58:58,669 INFO L226 Difference]: Without dead ends: 272 [2024-11-05 13:58:58,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 163 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=493, Invalid=2699, Unknown=0, NotChecked=0, Total=3192 [2024-11-05 13:58:58,671 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 242 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:58,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1399 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-05 13:58:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-05 13:58:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 258. [2024-11-05 13:58:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 185 states have (on average 1.2756756756756757) internal successors, (236), 190 states have internal predecessors, (236), 48 states have call successors, (48), 21 states have call predecessors, (48), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2024-11-05 13:58:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 336 transitions. [2024-11-05 13:58:58,715 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 336 transitions. Word has length 100 [2024-11-05 13:58:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:58,715 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 336 transitions. [2024-11-05 13:58:58,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-05 13:58:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 336 transitions. [2024-11-05 13:58:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:58:58,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:58,717 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2024-11-05 13:58:58,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 13:58:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:58,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:58,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash -702936307, now seen corresponding path program 1 times [2024-11-05 13:58:58,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:58,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487067887] [2024-11-05 13:58:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:58,919 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:58,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:58,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:58:58,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 13:58:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:59,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-05 13:58:59,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:59,094 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 13:58:59,109 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 13:58:59,167 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 13:58:59,168 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 13:58:59,209 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 13:58:59,209 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 13:58:59,444 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 13:58:59,445 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 13:58:59,486 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 13:58:59,486 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 13:59:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-05 13:59:15,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-05 13:59:16,401 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487067887] [2024-11-05 13:59:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [487067887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:16,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2024-11-05 13:59:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311386133] [2024-11-05 13:59:16,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:16,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 13:59:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 13:59:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:59:16,403 INFO L87 Difference]: Start difference. First operand 258 states and 336 transitions. Second operand has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-05 13:59:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:38,187 INFO L93 Difference]: Finished difference Result 878 states and 1206 transitions. [2024-11-05 13:59:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-05 13:59:38,189 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 102 [2024-11-05 13:59:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:38,193 INFO L225 Difference]: With dead ends: 878 [2024-11-05 13:59:38,193 INFO L226 Difference]: Without dead ends: 732 [2024-11-05 13:59:38,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 167 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=508, Invalid=2914, Unknown=0, NotChecked=0, Total=3422 [2024-11-05 13:59:38,196 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 435 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:38,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 2508 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2024-11-05 13:59:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-05 13:59:38,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 568. [2024-11-05 13:59:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 414 states have (on average 1.3091787439613527) internal successors, (542), 430 states have internal predecessors, (542), 101 states have call successors, (101), 38 states have call predecessors, (101), 52 states have return successors, (127), 99 states have call predecessors, (127), 97 states have call successors, (127) [2024-11-05 13:59:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 770 transitions. [2024-11-05 13:59:38,355 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 770 transitions. Word has length 102 [2024-11-05 13:59:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:38,356 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 770 transitions. [2024-11-05 13:59:38,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 11 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-05 13:59:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 770 transitions. [2024-11-05 13:59:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:59:38,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:38,359 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, 1, 1, 1] [2024-11-05 13:59:38,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 13:59:38,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:38,559 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:38,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -501112373, now seen corresponding path program 1 times [2024-11-05 13:59:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130309698] [2024-11-05 13:59:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:38,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:38,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 13:59:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:38,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 13:59:38,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-05 13:59:38,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-05 13:59:38,745 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130309698] [2024-11-05 13:59:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2130309698] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:59:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:59:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 13:59:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595100865] [2024-11-05 13:59:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:38,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 13:59:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 13:59:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 13:59:38,746 INFO L87 Difference]: Start difference. First operand 568 states and 770 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 13:59:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:38,863 INFO L93 Difference]: Finished difference Result 849 states and 1141 transitions. [2024-11-05 13:59:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 13:59:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-05 13:59:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:38,868 INFO L225 Difference]: With dead ends: 849 [2024-11-05 13:59:38,868 INFO L226 Difference]: Without dead ends: 403 [2024-11-05 13:59:38,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 13:59:38,870 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 1 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:38,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 353 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:59:38,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-05 13:59:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2024-11-05 13:59:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 290 states have (on average 1.2275862068965517) internal successors, (356), 297 states have internal predecessors, (356), 72 states have call successors, (72), 33 states have call predecessors, (72), 37 states have return successors, (77), 69 states have call predecessors, (77), 69 states have call successors, (77) [2024-11-05 13:59:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 505 transitions. [2024-11-05 13:59:38,971 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 505 transitions. Word has length 102 [2024-11-05 13:59:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:38,971 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 505 transitions. [2024-11-05 13:59:38,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 13:59:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 505 transitions. [2024-11-05 13:59:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:59:38,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:38,973 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2024-11-05 13:59:38,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 13:59:39,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:39,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:39,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1857349011, now seen corresponding path program 1 times [2024-11-05 13:59:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124611633] [2024-11-05 13:59:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:39,178 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:39,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:39,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:39,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 13:59:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:39,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-05 13:59:39,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:39,341 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 13:59:39,351 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 13:59:39,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:59:39,427 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 13:59:39,447 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 13:59:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-05 13:59:43,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:43,898 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124611633] [2024-11-05 13:59:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2124611633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:43,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:43,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-05 13:59:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501467677] [2024-11-05 13:59:43,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:43,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-05 13:59:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-05 13:59:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-05 13:59:43,900 INFO L87 Difference]: Start difference. First operand 400 states and 505 transitions. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-05 13:59:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:49,469 INFO L93 Difference]: Finished difference Result 897 states and 1171 transitions. [2024-11-05 13:59:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-05 13:59:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-05 13:59:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:49,473 INFO L225 Difference]: With dead ends: 897 [2024-11-05 13:59:49,473 INFO L226 Difference]: Without dead ends: 626 [2024-11-05 13:59:49,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2024-11-05 13:59:49,475 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 212 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:49,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1221 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-05 13:59:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-05 13:59:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 502. [2024-11-05 13:59:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 375 states have (on average 1.2373333333333334) internal successors, (464), 386 states have internal predecessors, (464), 83 states have call successors, (83), 35 states have call predecessors, (83), 43 states have return successors, (99), 80 states have call predecessors, (99), 80 states have call successors, (99) [2024-11-05 13:59:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 646 transitions. [2024-11-05 13:59:49,581 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 646 transitions. Word has length 100 [2024-11-05 13:59:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:49,581 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 646 transitions. [2024-11-05 13:59:49,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-05 13:59:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 646 transitions. [2024-11-05 13:59:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:59:49,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:49,583 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:49,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 13:59:49,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:49,784 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:49,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1426501035, now seen corresponding path program 1 times [2024-11-05 13:59:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085507152] [2024-11-05 13:59:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:49,785 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:49,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:49,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:49,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 13:59:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:49,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 13:59:49,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:50,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:50,378 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085507152] [2024-11-05 13:59:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2085507152] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:50,378 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:50,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2024-11-05 13:59:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917366620] [2024-11-05 13:59:50,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:50,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 13:59:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 13:59:50,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-05 13:59:50,379 INFO L87 Difference]: Start difference. First operand 502 states and 646 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-05 13:59:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:50,668 INFO L93 Difference]: Finished difference Result 1071 states and 1406 transitions. [2024-11-05 13:59:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:59:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 100 [2024-11-05 13:59:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:50,672 INFO L225 Difference]: With dead ends: 1071 [2024-11-05 13:59:50,672 INFO L226 Difference]: Without dead ends: 471 [2024-11-05 13:59:50,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-05 13:59:50,675 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 32 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:50,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1102 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:59:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-05 13:59:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2024-11-05 13:59:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 347 states have (on average 1.2046109510086456) internal successors, (418), 355 states have internal predecessors, (418), 83 states have call successors, (83), 35 states have call predecessors, (83), 40 states have return successors, (96), 80 states have call predecessors, (96), 80 states have call successors, (96) [2024-11-05 13:59:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 597 transitions. [2024-11-05 13:59:50,782 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 597 transitions. Word has length 100 [2024-11-05 13:59:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:50,783 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 597 transitions. [2024-11-05 13:59:50,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-05 13:59:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 597 transitions. [2024-11-05 13:59:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-05 13:59:50,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:50,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:59:50,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 13:59:50,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:50,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash 512430311, now seen corresponding path program 1 times [2024-11-05 13:59:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:50,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490933061] [2024-11-05 13:59:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:50,989 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:50,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:50,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process