/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_front_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 13:58:25,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 13:58:25,544 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 13:58:25,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 13:58:25,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 13:58:25,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 13:58:25,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 13:58:25,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 13:58:25,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 13:58:25,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 13:58:25,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 13:58:25,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 13:58:25,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 13:58:25,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 13:58:25,573 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 13:58:25,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 13:58:25,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 13:58:25,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 13:58:25,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 13:58:25,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 13:58:25,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 13:58:25,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 13:58:25,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 13:58:25,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 13:58:25,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 13:58:25,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 13:58:25,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:25,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 13:58:25,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 13:58:25,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 13:58:25,582 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 13:58:25,583 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 13:58:25,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 13:58:25,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 13:58:25,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 13:58:25,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 13:58:25,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 13:58:25,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 13:58:25,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 13:58:25,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 13:58:25,795 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 13:58:25,795 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 13:58:25,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_front_harness.i [2024-11-05 13:58:27,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 13:58:27,366 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 13:58:27,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_front_harness.i [2024-11-05 13:58:27,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e0a5567/cd171a9051584178a3d8b45d0bb9437f/FLAGa107377a7 [2024-11-05 13:58:27,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e0a5567/cd171a9051584178a3d8b45d0bb9437f [2024-11-05 13:58:27,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 13:58:27,407 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 13:58:27,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:27,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 13:58:27,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 13:58:27,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f391899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:27, skipping insertion in model container [2024-11-05 13:58:27,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:58:27" (1/1) ... [2024-11-05 13:58:27,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:27,719 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_front_harness.i[4495,4508] [2024-11-05 13:58:27,725 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_front_harness.i[4555,4568] [2024-11-05 13:58:28,117 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 13:58:28,175 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 13:58:28,176 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 13:58:28,176 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 13:58:28,183 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 13:58:28,184 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,184 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,185 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,185 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,185 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,186 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,188 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,188 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,190 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,190 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,195 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,196 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 13:58:28,196 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,196 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 13:58:28,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,197 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,198 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,201 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,202 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,202 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,202 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,203 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,203 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,434 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,434 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,435 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 13:58:28,435 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 13:58:28,505 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 13:58:28,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:28,545 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 13:58:28,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 13:58:28,580 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_front_harness.i[4495,4508] [2024-11-05 13:58:28,580 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_front_harness.i[4555,4568] [2024-11-05 13:58:28,606 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 13:58:28,627 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,627 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,628 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,631 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 13:58:28,632 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,633 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,633 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,633 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 13:58:28,633 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,634 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,635 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 13:58:28,635 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 13:58:28,636 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 13:58:28,637 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 13:58:28,640 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,640 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 13:58:28,641 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,641 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 13:58:28,642 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,642 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 13:58:28,642 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,642 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 13:58:28,643 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,644 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 13:58:28,644 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,644 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 13:58:28,644 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,644 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,712 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 13:58:28,713 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 13:58:28,714 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 13:58:28,715 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 13:58:28,752 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 13:58:28,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:28,765 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 13:58:28,776 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_front_harness.i[4495,4508] [2024-11-05 13:58:28,777 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_front_harness.i[4555,4568] [2024-11-05 13:58:28,822 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,823 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,823 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,823 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,824 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,829 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,829 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,832 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,833 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,833 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,834 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,834 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,834 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 13:58:28,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 13:58:29,046 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 13:58:29,053 INFO L204 MainTranslator]: Completed translation [2024-11-05 13:58:29,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29 WrapperNode [2024-11-05 13:58:29,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 13:58:29,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:29,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 13:58:29,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 13:58:29,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,150 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 136 [2024-11-05 13:58:29,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 13:58:29,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 13:58:29,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 13:58:29,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 13:58:29,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,192 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 5, 20]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 13:58:29,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 13:58:29,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 13:58:29,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 13:58:29,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 13:58:29,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (1/1) ... [2024-11-05 13:58:29,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 13:58:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 13:58:29,247 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 13:58:29,255 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 13:58:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 13:58:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 13:58:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 13:58:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 13:58:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2024-11-05 13:58:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2024-11-05 13:58:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 13:58:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-05 13:58:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 13:58:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 13:58:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 13:58:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 13:58:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 13:58:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 13:58:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 13:58:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 13:58:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:58:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 13:58:29,504 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 13:58:29,506 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 13:58:29,808 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-05 13:58:29,809 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 13:58:29,817 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 13:58:29,817 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 13:58:29,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:29 BoogieIcfgContainer [2024-11-05 13:58:29,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 13:58:29,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 13:58:29,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 13:58:29,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 13:58:29,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:58:27" (1/3) ... [2024-11-05 13:58:29,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a01aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:29, skipping insertion in model container [2024-11-05 13:58:29,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:58:29" (2/3) ... [2024-11-05 13:58:29,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a01aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:58:29, skipping insertion in model container [2024-11-05 13:58:29,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:58:29" (3/3) ... [2024-11-05 13:58:29,825 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness.i [2024-11-05 13:58:29,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 13:58:29,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 13:58:29,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 13:58:29,914 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;@6564afd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 13:58:29,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 13:58:29,917 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 13:58:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 13:58:29,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:29,938 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 13:58:29,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:29,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1606468667, now seen corresponding path program 1 times [2024-11-05 13:58:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627064228] [2024-11-05 13:58:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:29,971 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:29,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:29,977 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 13:58:29,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 13:58:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:30,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 13:58:30,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:30,161 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 13:58:30,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:30,252 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 13:58:30,252 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627064228] [2024-11-05 13:58:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1627064228] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:58:30,253 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:58:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 13:58:30,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756611308] [2024-11-05 13:58:30,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:30,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 13:58:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 13:58:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 13:58:30,277 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 13:58:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:30,299 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-05 13:58:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 13:58:30,305 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 13:58:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:30,311 INFO L225 Difference]: With dead ends: 188 [2024-11-05 13:58:30,311 INFO L226 Difference]: Without dead ends: 93 [2024-11-05 13:58:30,316 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 13:58:30,319 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 13:58:30,319 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 13:58:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-05 13:58:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-05 13:58:30,354 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 13:58:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-05 13:58:30,357 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-05 13:58:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:30,357 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-05 13:58:30,361 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 13:58:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-05 13:58:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 13:58:30,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:30,364 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 13:58:30,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 13:58:30,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:30,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1607570691, now seen corresponding path program 1 times [2024-11-05 13:58:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619396291] [2024-11-05 13:58:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:30,566 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:30,567 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 13:58:30,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 13:58:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:30,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 13:58:30,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:30,804 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 13:58:30,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:30,919 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 13:58:30,920 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619396291] [2024-11-05 13:58:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1619396291] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:30,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-05 13:58:30,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580490444] [2024-11-05 13:58:30,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:30,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 13:58:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 13:58:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 13:58:30,924 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 13:58:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:30,991 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-11-05 13:58:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 13:58:30,992 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 13:58:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:30,995 INFO L225 Difference]: With dead ends: 169 [2024-11-05 13:58:30,995 INFO L226 Difference]: Without dead ends: 95 [2024-11-05 13:58:30,996 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 13:58:30,997 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:30,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-05 13:58:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-05 13:58:31,011 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 13:58:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2024-11-05 13:58:31,013 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 84 [2024-11-05 13:58:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:31,013 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2024-11-05 13:58:31,014 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 13:58:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2024-11-05 13:58:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 13:58:31,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:31,018 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 13:58:31,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-05 13:58:31,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:31,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash -254868999, now seen corresponding path program 1 times [2024-11-05 13:58:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:31,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610703288] [2024-11-05 13:58:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:31,220 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:31,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,222 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 13:58:31,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 13:58:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:31,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 13:58:31,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:31,367 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 13:58:31,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:31,453 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 13:58:31,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:31,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610703288] [2024-11-05 13:58:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1610703288] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-05 13:58:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407622092] [2024-11-05 13:58:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:31,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 13:58:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 13:58:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-05 13:58:31,456 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 13:58:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:31,517 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2024-11-05 13:58:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 13:58:31,518 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 13:58:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:31,519 INFO L225 Difference]: With dead ends: 174 [2024-11-05 13:58:31,519 INFO L226 Difference]: Without dead ends: 98 [2024-11-05 13:58:31,520 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 13:58:31,520 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:31,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 671 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:58:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-05 13:58:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-05 13:58:31,527 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 13:58:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2024-11-05 13:58:31,529 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 86 [2024-11-05 13:58:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:31,529 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2024-11-05 13:58:31,529 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 13:58:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2024-11-05 13:58:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-05 13:58:31,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:31,530 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 13:58:31,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 13:58:31,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,737 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2045206106, now seen corresponding path program 1 times [2024-11-05 13:58:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961377631] [2024-11-05 13:58:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:31,738 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:31,739 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 13:58:31,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 13:58:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:31,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 13:58:31,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:31,878 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 13:58:31,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:31,962 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 13:58:31,962 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:31,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961377631] [2024-11-05 13:58:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961377631] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:31,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-05 13:58:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994727117] [2024-11-05 13:58:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:31,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 13:58:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:31,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 13:58:31,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 13:58:31,964 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 13:58:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:32,034 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-11-05 13:58:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 13:58:32,034 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 13:58:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:32,036 INFO L225 Difference]: With dead ends: 178 [2024-11-05 13:58:32,036 INFO L226 Difference]: Without dead ends: 101 [2024-11-05 13:58:32,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:58:32,037 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 4 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 13:58:32,037 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 13:58:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-05 13:58:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-05 13:58:32,043 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 13:58:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2024-11-05 13:58:32,044 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 88 [2024-11-05 13:58:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:32,044 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2024-11-05 13:58:32,045 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 13:58:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2024-11-05 13:58:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 13:58:32,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:32,046 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 13:58:32,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 13:58:32,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,248 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:32,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash -708361508, now seen corresponding path program 1 times [2024-11-05 13:58:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:32,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197071685] [2024-11-05 13:58:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:32,249 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,251 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 13:58:32,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 13:58:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:32,398 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 13:58:32,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:32,464 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 13:58:32,464 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197071685] [2024-11-05 13:58:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1197071685] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:58:32,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:58:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 6 [2024-11-05 13:58:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907613685] [2024-11-05 13:58:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:58:32,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 13:58:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 13:58:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 13:58:32,466 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 13:58:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:32,552 INFO L93 Difference]: Finished difference Result 183 states and 246 transitions. [2024-11-05 13:58:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 13:58:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 89 [2024-11-05 13:58:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:32,554 INFO L225 Difference]: With dead ends: 183 [2024-11-05 13:58:32,554 INFO L226 Difference]: Without dead ends: 105 [2024-11-05 13:58:32,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 13:58:32,555 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 16 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:32,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 410 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:58:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-05 13:58:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-05 13:58:32,561 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 13:58:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-11-05 13:58:32,562 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 89 [2024-11-05 13:58:32,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:32,562 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-11-05 13:58:32,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 13:58:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-11-05 13:58:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:58:32,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:32,563 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 13:58:32,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 13:58:32,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:32,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1707514615, now seen corresponding path program 1 times [2024-11-05 13:58:32,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:32,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083490177] [2024-11-05 13:58:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:32,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:32,769 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 13:58:32,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 13:58:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:32,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-05 13:58:32,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:33,014 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 13:58:33,027 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 13:58:33,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:33,134 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 13:58:33,152 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 13:58:37,678 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 13:58:37,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:38,444 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 13:58:38,445 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:38,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083490177] [2024-11-05 13:58:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2083490177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:38,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-05 13:58:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783043126] [2024-11-05 13:58:38,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:38,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 13:58:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 13:58:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-05 13:58:38,447 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 13:58:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:41,651 INFO L93 Difference]: Finished difference Result 273 states and 369 transitions. [2024-11-05 13:58:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-05 13:58:41,653 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 13:58:41,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:41,655 INFO L225 Difference]: With dead ends: 273 [2024-11-05 13:58:41,656 INFO L226 Difference]: Without dead ends: 208 [2024-11-05 13:58:41,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:58:41,662 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 130 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:41,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1116 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-05 13:58:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-05 13:58:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 201. [2024-11-05 13:58:41,707 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 13:58:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 268 transitions. [2024-11-05 13:58:41,710 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 268 transitions. Word has length 100 [2024-11-05 13:58:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:41,710 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 268 transitions. [2024-11-05 13:58:41,710 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 13:58:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 268 transitions. [2024-11-05 13:58:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:58:41,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:41,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 13:58:41,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-05 13:58:41,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:41,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:41,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 898167989, now seen corresponding path program 1 times [2024-11-05 13:58:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446728333] [2024-11-05 13:58:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:41,913 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:41,932 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 13:58:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 13:58:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:42,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-05 13:58:42,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:42,112 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 13:58:42,129 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 13:58:42,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:58:42,210 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 13:58:42,229 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 13:58:48,620 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 13:58:48,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:58:49,522 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 13:58:49,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:58:49,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446728333] [2024-11-05 13:58:49,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [446728333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:58:49,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:58:49,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2024-11-05 13:58:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758758241] [2024-11-05 13:58:49,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:58:49,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-05 13:58:49,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:58:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-05 13:58:49,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-05 13:58:49,524 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 13:58:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:58:58,113 INFO L93 Difference]: Finished difference Result 454 states and 610 transitions. [2024-11-05 13:58:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-05 13:58:58,114 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 13:58:58,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:58:58,116 INFO L225 Difference]: With dead ends: 454 [2024-11-05 13:58:58,117 INFO L226 Difference]: Without dead ends: 272 [2024-11-05 13:58:58,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 163 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=493, Invalid=2699, Unknown=0, NotChecked=0, Total=3192 [2024-11-05 13:58:58,120 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 220 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-05 13:58:58,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1722 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-05 13:58:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-05 13:58:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 258. [2024-11-05 13:58:58,176 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 13:58:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 336 transitions. [2024-11-05 13:58:58,178 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 336 transitions. Word has length 100 [2024-11-05 13:58:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:58:58,179 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 336 transitions. [2024-11-05 13:58:58,179 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 13:58:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 336 transitions. [2024-11-05 13:58:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:58:58,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:58:58,182 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 13:58:58,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 13:58:58,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:58,386 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:58:58,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:58:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1174086161, now seen corresponding path program 1 times [2024-11-05 13:58:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:58:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848062014] [2024-11-05 13:58:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:58:58,387 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:58:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:58:58,388 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 13:58:58,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 13:58:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:58:58,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-05 13:58:58,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:58:58,557 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 13:58:58,569 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 13:58:58,636 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 13:58:58,636 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 13:58:58,689 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 13:58:58,689 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 13:58:58,949 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 13:58:58,949 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 13:58:58,996 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 13:58:58,996 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 13:59:13,661 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 13:59:13,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:14,627 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 13:59:14,627 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:14,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848062014] [2024-11-05 13:59:14,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [848062014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:14,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2024-11-05 13:59:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862262483] [2024-11-05 13:59:14,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:14,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 13:59:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 13:59:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-05 13:59:14,629 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 13:59:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:34,211 INFO L93 Difference]: Finished difference Result 878 states and 1206 transitions. [2024-11-05 13:59:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-05 13:59:34,212 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 13:59:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:34,223 INFO L225 Difference]: With dead ends: 878 [2024-11-05 13:59:34,224 INFO L226 Difference]: Without dead ends: 732 [2024-11-05 13:59:34,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 167 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=508, Invalid=2914, Unknown=0, NotChecked=0, Total=3422 [2024-11-05 13:59:34,225 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 391 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:34,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 3224 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-05 13:59:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-05 13:59:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 568. [2024-11-05 13:59:34,418 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 13:59:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 770 transitions. [2024-11-05 13:59:34,429 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 770 transitions. Word has length 102 [2024-11-05 13:59:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:34,433 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 770 transitions. [2024-11-05 13:59:34,434 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 13:59:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 770 transitions. [2024-11-05 13:59:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:59:34,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:34,436 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 13:59:34,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 13:59:34,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,636 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:34,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1375910095, now seen corresponding path program 1 times [2024-11-05 13:59:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018162114] [2024-11-05 13:59:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:34,638 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:34,640 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 13:59:34,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 13:59:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:34,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 13:59:34,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:34,755 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 13:59:34,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:34,800 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 13:59:34,800 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018162114] [2024-11-05 13:59:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1018162114] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:59:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:59:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 13:59:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79033063] [2024-11-05 13:59:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 13:59:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 13:59:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 13:59:34,801 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 13:59:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:34,887 INFO L93 Difference]: Finished difference Result 849 states and 1141 transitions. [2024-11-05 13:59:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 13:59:34,888 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 13:59:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:34,890 INFO L225 Difference]: With dead ends: 849 [2024-11-05 13:59:34,890 INFO L226 Difference]: Without dead ends: 403 [2024-11-05 13:59:34,892 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 13:59:34,892 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 13:59:34,892 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 13:59:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-05 13:59:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2024-11-05 13:59:34,963 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 13:59:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 505 transitions. [2024-11-05 13:59:34,966 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 505 transitions. Word has length 102 [2024-11-05 13:59:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:34,966 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 505 transitions. [2024-11-05 13:59:34,966 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 13:59:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 505 transitions. [2024-11-05 13:59:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:59:34,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:34,968 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 13:59:34,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-05 13:59:35,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:35,171 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:35,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 763306417, now seen corresponding path program 1 times [2024-11-05 13:59:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467159941] [2024-11-05 13:59:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:35,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:35,173 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 13:59:35,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 13:59:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:35,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-05 13:59:35,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:35,328 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 13:59:35,341 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 13:59:35,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 13:59:35,401 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 13:59:35,414 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 13:59:39,125 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 13:59:39,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:39,761 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 13:59:39,762 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467159941] [2024-11-05 13:59:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1467159941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 13:59:39,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 13:59:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-05 13:59:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126491686] [2024-11-05 13:59:39,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 13:59:39,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-05 13:59:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-05 13:59:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-05 13:59:39,763 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 13:59:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:43,491 INFO L93 Difference]: Finished difference Result 897 states and 1171 transitions. [2024-11-05 13:59:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-05 13:59:43,493 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 13:59:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:43,503 INFO L225 Difference]: With dead ends: 897 [2024-11-05 13:59:43,504 INFO L226 Difference]: Without dead ends: 626 [2024-11-05 13:59:43,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2024-11-05 13:59:43,506 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 211 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:43,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1090 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-05 13:59:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-05 13:59:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 502. [2024-11-05 13:59:43,614 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 13:59:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 646 transitions. [2024-11-05 13:59:43,617 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 646 transitions. Word has length 100 [2024-11-05 13:59:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:43,617 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 646 transitions. [2024-11-05 13:59:43,617 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 13:59:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 646 transitions. [2024-11-05 13:59:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-05 13:59:43,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:43,618 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 13:59:43,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 13:59:43,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:43,822 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:43,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -247810833, now seen corresponding path program 1 times [2024-11-05 13:59:43,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:43,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708456345] [2024-11-05 13:59:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:43,825 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 13:59:43,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 13:59:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:43,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 13:59:43,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:44,079 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 13:59:44,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:44,317 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 13:59:44,317 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708456345] [2024-11-05 13:59:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1708456345] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:44,317 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:44,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2024-11-05 13:59:44,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349592350] [2024-11-05 13:59:44,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:44,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 13:59:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 13:59:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-05 13:59:44,319 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 13:59:44,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:44,560 INFO L93 Difference]: Finished difference Result 1071 states and 1406 transitions. [2024-11-05 13:59:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:59:44,561 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 13:59:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:44,564 INFO L225 Difference]: With dead ends: 1071 [2024-11-05 13:59:44,564 INFO L226 Difference]: Without dead ends: 471 [2024-11-05 13:59:44,565 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 13:59:44,566 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 46 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:44,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 940 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:59:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-05 13:59:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2024-11-05 13:59:44,669 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 13:59:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 597 transitions. [2024-11-05 13:59:44,671 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 597 transitions. Word has length 100 [2024-11-05 13:59:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:44,672 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 597 transitions. [2024-11-05 13:59:44,672 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 13:59:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 597 transitions. [2024-11-05 13:59:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-05 13:59:44,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:44,674 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 13:59:44,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-05 13:59:44,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:44,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash 722749355, now seen corresponding path program 1 times [2024-11-05 13:59:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106958491] [2024-11-05 13:59:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:44,877 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 13:59:44,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 13:59:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:45,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 13:59:45,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 13:59:45,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-05 13:59:45,060 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106958491] [2024-11-05 13:59:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106958491] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 13:59:45,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 13:59:45,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-05 13:59:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310409753] [2024-11-05 13:59:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:45,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 13:59:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 13:59:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 13:59:45,061 INFO L87 Difference]: Start difference. First operand 471 states and 597 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:59:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:45,152 INFO L93 Difference]: Finished difference Result 644 states and 819 transitions. [2024-11-05 13:59:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 13:59:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 104 [2024-11-05 13:59:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:45,154 INFO L225 Difference]: With dead ends: 644 [2024-11-05 13:59:45,154 INFO L226 Difference]: Without dead ends: 383 [2024-11-05 13:59:45,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 13:59:45,155 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:45,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 13:59:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-05 13:59:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-05 13:59:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 276 states have (on average 1.1775362318840579) internal successors, (325), 280 states have internal predecessors, (325), 72 states have call successors, (72), 33 states have call predecessors, (72), 34 states have return successors, (74), 69 states have call predecessors, (74), 69 states have call successors, (74) [2024-11-05 13:59:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 471 transitions. [2024-11-05 13:59:45,228 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 471 transitions. Word has length 104 [2024-11-05 13:59:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:45,229 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 471 transitions. [2024-11-05 13:59:45,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 13:59:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 471 transitions. [2024-11-05 13:59:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-05 13:59:45,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:45,230 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 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] [2024-11-05 13:59:45,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 13:59:45,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:45,431 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:45,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash -158412749, now seen corresponding path program 1 times [2024-11-05 13:59:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255386185] [2024-11-05 13:59:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:45,431 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:45,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:45,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 13:59:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:45,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-05 13:59:45,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:45,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:45,768 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255386185] [2024-11-05 13:59:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1255386185] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:45,768 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2024-11-05 13:59:45,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594609752] [2024-11-05 13:59:45,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:45,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 13:59:45,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:45,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 13:59:45,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 13:59:45,769 INFO L87 Difference]: Start difference. First operand 383 states and 471 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:59:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:45,978 INFO L93 Difference]: Finished difference Result 598 states and 752 transitions. [2024-11-05 13:59:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 13:59:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2024-11-05 13:59:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:45,980 INFO L225 Difference]: With dead ends: 598 [2024-11-05 13:59:45,981 INFO L226 Difference]: Without dead ends: 387 [2024-11-05 13:59:45,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-05 13:59:45,982 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 36 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:45,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 691 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 13:59:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-05 13:59:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-11-05 13:59:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 276 states have (on average 1.1666666666666667) internal successors, (322), 280 states have internal predecessors, (322), 72 states have call successors, (72), 33 states have call predecessors, (72), 34 states have return successors, (74), 69 states have call predecessors, (74), 69 states have call successors, (74) [2024-11-05 13:59:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 468 transitions. [2024-11-05 13:59:46,069 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 468 transitions. Word has length 102 [2024-11-05 13:59:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:46,069 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 468 transitions. [2024-11-05 13:59:46,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:59:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 468 transitions. [2024-11-05 13:59:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-05 13:59:46,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:46,070 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 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] [2024-11-05 13:59:46,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-05 13:59:46,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:46,273 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:46,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1930017376, now seen corresponding path program 1 times [2024-11-05 13:59:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:46,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227201223] [2024-11-05 13:59:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:46,274 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:46,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:46,276 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:46,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 13:59:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:46,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-05 13:59:46,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:46,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 13:59:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 13:59:46,712 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 13:59:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227201223] [2024-11-05 13:59:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1227201223] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 13:59:46,712 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 13:59:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2024-11-05 13:59:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401409373] [2024-11-05 13:59:46,712 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 13:59:46,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 13:59:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 13:59:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 13:59:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-05 13:59:46,713 INFO L87 Difference]: Start difference. First operand 383 states and 468 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:59:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 13:59:46,982 INFO L93 Difference]: Finished difference Result 614 states and 770 transitions. [2024-11-05 13:59:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 13:59:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-11-05 13:59:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 13:59:46,986 INFO L225 Difference]: With dead ends: 614 [2024-11-05 13:59:46,986 INFO L226 Difference]: Without dead ends: 400 [2024-11-05 13:59:46,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-05 13:59:46,988 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 54 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 13:59:46,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 790 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 13:59:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-05 13:59:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 383. [2024-11-05 13:59:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 276 states have (on average 1.1557971014492754) internal successors, (319), 280 states have internal predecessors, (319), 72 states have call successors, (72), 33 states have call predecessors, (72), 34 states have return successors, (74), 69 states have call predecessors, (74), 69 states have call successors, (74) [2024-11-05 13:59:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 465 transitions. [2024-11-05 13:59:47,064 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 465 transitions. Word has length 104 [2024-11-05 13:59:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 13:59:47,064 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 465 transitions. [2024-11-05 13:59:47,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 13:59:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 465 transitions. [2024-11-05 13:59:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-05 13:59:47,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 13:59:47,066 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-05 13:59:47,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 13:59:47,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:47,266 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 13:59:47,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 13:59:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash 824848438, now seen corresponding path program 1 times [2024-11-05 13:59:47,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 13:59:47,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873314721] [2024-11-05 13:59:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 13:59:47,269 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 13:59:47,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 13:59:47,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 13:59:47,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 13:59:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 13:59:47,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-05 13:59:47,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 13:59:47,455 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 13:59:47,485 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 13:59:47,546 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 13:59:47,546 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 13:59:47,582 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 13:59:47,582 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 13:59:47,966 INFO L349 Elim1Store]: treesize reduction 36, result has 53.8 percent of original size [2024-11-05 13:59:47,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 113 [2024-11-05 13:59:48,040 INFO L349 Elim1Store]: treesize reduction 80, result has 24.5 percent of original size [2024-11-05 13:59:48,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 63 [2024-11-05 13:59:48,738 INFO L349 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2024-11-05 13:59:48,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 188 treesize of output 141 [2024-11-05 13:59:48,847 INFO L349 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2024-11-05 13:59:48,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 106 treesize of output 123