/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:30:16,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:30:16,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:30:16,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:30:16,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:30:16,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:30:16,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:30:16,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:30:16,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:30:16,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:30:16,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:30:16,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:30:16,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:30:16,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:30:16,213 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:30:16,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:30:16,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:30:16,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:30:16,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:30:16,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:30:16,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:30:16,218 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:30:16,218 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:30:16,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:30:16,218 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:30:16,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:30:16,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:30:16,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:30:16,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:30:16,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:30:16,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:30:16,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:30:16,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:30:16,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:30:16,221 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:16,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:30:16,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:30:16,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:30:16,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:30:16,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:30:16,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-05 02:30:17,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:30:17,977 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:30:17,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-05 02:30:18,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b6b0db4/68055743b8d4477f90dc61e2a7cf55cc/FLAGcf2e2fdee [2024-11-05 02:30:18,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b6b0db4/68055743b8d4477f90dc61e2a7cf55cc [2024-11-05 02:30:18,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:30:18,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:30:18,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:30:18,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:30:18,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:30:18,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:30:18" (1/1) ... [2024-11-05 02:30:18,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a93f2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:18, skipping insertion in model container [2024-11-05 02:30:18,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:30:18" (1/1) ... [2024-11-05 02:30:18,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:30:18,551 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-05 02:30:18,559 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-05 02:30:19,215 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,294 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,295 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,295 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,302 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,304 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,304 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,304 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,305 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,305 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,306 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,314 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,315 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,320 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,321 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,330 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,331 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,331 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,331 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,332 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,333 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,333 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,333 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,334 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,337 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,337 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,338 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,338 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,525 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,526 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,526 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,527 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,613 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:19,641 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:30:19,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:30:19,674 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-05 02:30:19,675 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-05 02:30:19,704 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,723 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,723 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,724 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,733 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,735 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,736 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,736 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,738 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,740 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,740 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,741 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,744 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,748 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,749 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,749 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,750 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,751 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,751 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,751 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,751 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,752 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,753 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,753 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,754 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,754 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,754 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,794 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,797 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,798 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,798 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,825 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:30:19,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:19,837 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:30:19,852 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-05 02:30:19,852 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-05 02:30:19,902 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,903 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,903 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,903 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,903 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,911 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,911 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,912 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,913 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,914 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,914 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,915 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,915 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:30:19,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:30:20,118 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:30:20,125 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:30:20,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20 WrapperNode [2024-11-05 02:30:20,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:30:20,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:30:20,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:30:20,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:30:20,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,222 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-05 02:30:20,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:30:20,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:30:20,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:30:20,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:30:20,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,260 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-05 02:30:20,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:30:20,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:30:20,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:30:20,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:30:20,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (1/1) ... [2024-11-05 02:30:20,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:30:20,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:30:20,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:30:20,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:30:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:30:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:30:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:30:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:30:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:30:20,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:30:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:30:20,356 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:30:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:30:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:30:20,357 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:30:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:30:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:30:20,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:30:20,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:30:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:30:20,358 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:30:20,570 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:30:20,571 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:30:20,835 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-05 02:30:20,836 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:30:20,846 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:30:20,846 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 02:30:20,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:30:20 BoogieIcfgContainer [2024-11-05 02:30:20,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:30:20,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:30:20,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:30:20,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:30:20,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:30:18" (1/3) ... [2024-11-05 02:30:20,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee73a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:30:20, skipping insertion in model container [2024-11-05 02:30:20,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:30:20" (2/3) ... [2024-11-05 02:30:20,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee73a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:30:20, skipping insertion in model container [2024-11-05 02:30:20,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:30:20" (3/3) ... [2024-11-05 02:30:20,852 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2024-11-05 02:30:20,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:30:20,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:30:20,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:30:20,923 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;@4ca67130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:30:20,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:30:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-05 02:30:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:30:20,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:20,934 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:20,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:20,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-05 02:30:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928793099] [2024-11-05 02:30:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:20,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:20,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:20,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:30:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:21,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:30:21,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:21,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:21,210 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928793099] [2024-11-05 02:30:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [928793099] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:30:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378527533] [2024-11-05 02:30:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:21,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:30:21,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:30:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:30:21,238 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:30:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:21,266 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-05 02:30:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:30:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-05 02:30:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:21,277 INFO L225 Difference]: With dead ends: 130 [2024-11-05 02:30:21,277 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 02:30:21,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:30:21,283 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:21,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 02:30:21,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 02:30:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-05 02:30:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 02:30:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-05 02:30:21,315 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-05 02:30:21,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:21,316 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-05 02:30:21,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-05 02:30:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-05 02:30:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:30:21,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:21,318 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:21,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-05 02:30:21,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:21,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:21,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-05 02:30:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839579599] [2024-11-05 02:30:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:21,520 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:21,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:21,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:21,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:30:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:21,688 WARN L253 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-05 02:30:21,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:21,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:21,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:21,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:21,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:22,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:22,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:22,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:30:23,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:30:24,181 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839579599] [2024-11-05 02:30:24,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [839579599] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:24,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:24,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-05 02:30:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960925252] [2024-11-05 02:30:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:24,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:30:24,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:30:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:30:24,184 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-05 02:30:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:26,238 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2024-11-05 02:30:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:30:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2024-11-05 02:30:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:26,242 INFO L225 Difference]: With dead ends: 170 [2024-11-05 02:30:26,243 INFO L226 Difference]: Without dead ends: 120 [2024-11-05 02:30:26,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:30:26,244 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 54 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:26,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 487 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-05 02:30:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-05 02:30:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-05 02:30:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 86 states have internal predecessors, (109), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-05 02:30:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 158 transitions. [2024-11-05 02:30:26,262 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 158 transitions. Word has length 68 [2024-11-05 02:30:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:26,263 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 158 transitions. [2024-11-05 02:30:26,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-05 02:30:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 158 transitions. [2024-11-05 02:30:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:30:26,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:26,265 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:26,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-05 02:30:26,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:26,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:26,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1195332088, now seen corresponding path program 1 times [2024-11-05 02:30:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501449747] [2024-11-05 02:30:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:26,467 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:26,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:26,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:30:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:26,593 WARN L253 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:30:26,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:26,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:26,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:26,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-05 02:30:26,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:26,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:26,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:26,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:30:27,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:30:28,410 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501449747] [2024-11-05 02:30:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501449747] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:28,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:28,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-05 02:30:28,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419135920] [2024-11-05 02:30:28,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:28,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 02:30:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 02:30:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:30:28,412 INFO L87 Difference]: Start difference. First operand 118 states and 158 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:30,111 INFO L93 Difference]: Finished difference Result 177 states and 237 transitions. [2024-11-05 02:30:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 02:30:30,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2024-11-05 02:30:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:30,113 INFO L225 Difference]: With dead ends: 177 [2024-11-05 02:30:30,113 INFO L226 Difference]: Without dead ends: 125 [2024-11-05 02:30:30,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:30:30,114 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 75 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:30,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 420 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 02:30:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-05 02:30:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2024-11-05 02:30:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 89 states have internal predecessors, (111), 24 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (27), 22 states have call predecessors, (27), 22 states have call successors, (27) [2024-11-05 02:30:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-11-05 02:30:30,140 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 70 [2024-11-05 02:30:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:30,140 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-11-05 02:30:30,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-11-05 02:30:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:30:30,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:30,142 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:30,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-05 02:30:30,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:30,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:30,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash -172209942, now seen corresponding path program 1 times [2024-11-05 02:30:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:30,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384413066] [2024-11-05 02:30:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:30,347 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:30,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:30,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 02:30:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:30,465 WARN L253 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-05 02:30:30,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:30,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:30,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:30:30,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:30,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:30,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:30,770 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:30:30,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:30:30,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 02:30:30,836 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:30:30,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:30:30,861 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:30:30,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:30:31,167 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:30:31,167 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 156 treesize of output 106 [2024-11-05 02:30:31,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-05 02:30:31,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-11-05 02:30:31,251 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-05 02:30:31,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 75 [2024-11-05 02:30:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2024-11-05 02:30:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:30:34,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:30:34,718 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:34,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384413066] [2024-11-05 02:30:34,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1384413066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:30:34,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:30:34,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2024-11-05 02:30:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936903589] [2024-11-05 02:30:34,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:30:34,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:30:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:34,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:30:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:30:34,720 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:39,061 INFO L93 Difference]: Finished difference Result 237 states and 317 transitions. [2024-11-05 02:30:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:30:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2024-11-05 02:30:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:39,066 INFO L225 Difference]: With dead ends: 237 [2024-11-05 02:30:39,066 INFO L226 Difference]: Without dead ends: 186 [2024-11-05 02:30:39,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:30:39,067 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 110 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:39,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1280 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-05 02:30:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-05 02:30:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 127. [2024-11-05 02:30:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 94 states have internal predecessors, (115), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-05 02:30:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 169 transitions. [2024-11-05 02:30:39,092 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 169 transitions. Word has length 70 [2024-11-05 02:30:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:39,092 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 169 transitions. [2024-11-05 02:30:39,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:30:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 169 transitions. [2024-11-05 02:30:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:30:39,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:39,093 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:39,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-05 02:30:39,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:39,294 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -316025515, now seen corresponding path program 1 times [2024-11-05 02:30:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:39,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228861791] [2024-11-05 02:30:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:39,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:39,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:39,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:39,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-05 02:30:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:39,429 WARN L253 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-05 02:30:39,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:39,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:39,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:39,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:39,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:39,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-05 02:30:39,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:30:40,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:30:41,493 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228861791] [2024-11-05 02:30:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1228861791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:41,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:41,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2024-11-05 02:30:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532849763] [2024-11-05 02:30:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:41,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:30:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:30:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:30:41,495 INFO L87 Difference]: Start difference. First operand 127 states and 169 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:44,231 INFO L93 Difference]: Finished difference Result 195 states and 262 transitions. [2024-11-05 02:30:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 02:30:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-05 02:30:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:44,232 INFO L225 Difference]: With dead ends: 195 [2024-11-05 02:30:44,233 INFO L226 Difference]: Without dead ends: 140 [2024-11-05 02:30:44,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:30:44,234 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 66 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:44,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 613 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-05 02:30:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-05 02:30:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2024-11-05 02:30:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 96 states have internal predecessors, (118), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-05 02:30:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2024-11-05 02:30:44,261 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 72 [2024-11-05 02:30:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:44,261 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2024-11-05 02:30:44,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2024-11-05 02:30:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:30:44,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:44,263 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:44,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-05 02:30:44,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:44,464 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:44,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1064398778, now seen corresponding path program 1 times [2024-11-05 02:30:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078115472] [2024-11-05 02:30:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:44,465 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:44,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:44,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-05 02:30:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:44,605 WARN L253 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-05 02:30:44,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:44,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:44,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:44,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:30:44,818 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 22 treesize of output 1 [2024-11-05 02:30:44,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:44,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:44,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:30:44,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:44,966 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:30:44,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:30:44,994 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:30:44,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:30:45,024 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:30:45,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:30:45,361 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:30:45,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:30:45,398 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:30:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:30:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:30:47,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:30:48,219 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078115472] [2024-11-05 02:30:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078115472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:30:48,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:30:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2024-11-05 02:30:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782279392] [2024-11-05 02:30:48,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:30:48,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:30:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:30:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:30:48,221 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:30:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:51,016 INFO L93 Difference]: Finished difference Result 255 states and 342 transitions. [2024-11-05 02:30:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:30:51,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 72 [2024-11-05 02:30:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:51,018 INFO L225 Difference]: With dead ends: 255 [2024-11-05 02:30:51,019 INFO L226 Difference]: Without dead ends: 203 [2024-11-05 02:30:51,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:30:51,020 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 162 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:51,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 703 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-05 02:30:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-05 02:30:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 132. [2024-11-05 02:30:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 99 states have internal predecessors, (120), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:30:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2024-11-05 02:30:51,046 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 72 [2024-11-05 02:30:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:51,046 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2024-11-05 02:30:51,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:30:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2024-11-05 02:30:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 02:30:51,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:51,047 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:51,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-05 02:30:51,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:51,248 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:51,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1928092350, now seen corresponding path program 1 times [2024-11-05 02:30:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:51,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878009184] [2024-11-05 02:30:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:51,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:51,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:51,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-05 02:30:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:51,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-05 02:30:51,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:51,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:51,485 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 02:30:51,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:51,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:30:51,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:51,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:30:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 02:30:52,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-05 02:30:52,380 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878009184] [2024-11-05 02:30:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1878009184] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:30:52,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:30:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3] total 11 [2024-11-05 02:30:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051452564] [2024-11-05 02:30:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:30:52,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 02:30:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 02:30:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-05 02:30:52,382 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:30:53,671 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2024-11-05 02:30:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 02:30:53,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2024-11-05 02:30:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:30:53,673 INFO L225 Difference]: With dead ends: 198 [2024-11-05 02:30:53,673 INFO L226 Difference]: Without dead ends: 141 [2024-11-05 02:30:53,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-05 02:30:53,674 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 90 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-05 02:30:53,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 345 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-05 02:30:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-05 02:30:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2024-11-05 02:30:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 100 states have internal predecessors, (121), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:30:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 177 transitions. [2024-11-05 02:30:53,698 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 177 transitions. Word has length 73 [2024-11-05 02:30:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:30:53,699 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 177 transitions. [2024-11-05 02:30:53,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-05 02:30:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 177 transitions. [2024-11-05 02:30:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-05 02:30:53,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:30:53,699 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:30:53,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-05 02:30:53,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:53,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:30:53,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:30:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash 956833811, now seen corresponding path program 1 times [2024-11-05 02:30:53,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:30:53,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511766527] [2024-11-05 02:30:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:30:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:30:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:30:53,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:30:53,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-05 02:30:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:30:54,051 WARN L253 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-05 02:30:54,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:30:54,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:30:54,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:54,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:30:54,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:54,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:30:54,382 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:30:54,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:30:54,417 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:30:54,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:30:54,449 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:30:54,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:30:54,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:30:54,791 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:30:54,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:30:54,825 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:30:54,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:30:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:30:57,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:30:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:30:58,220 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:30:58,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511766527] [2024-11-05 02:30:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [511766527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:30:58,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:30:58,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2024-11-05 02:30:58,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389158775] [2024-11-05 02:30:58,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:30:58,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-05 02:30:58,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:30:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-05 02:30:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:30:58,221 INFO L87 Difference]: Start difference. First operand 133 states and 177 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:31:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:02,634 INFO L93 Difference]: Finished difference Result 277 states and 376 transitions. [2024-11-05 02:31:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-05 02:31:02,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 74 [2024-11-05 02:31:02,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:02,636 INFO L225 Difference]: With dead ends: 277 [2024-11-05 02:31:02,636 INFO L226 Difference]: Without dead ends: 222 [2024-11-05 02:31:02,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:31:02,638 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 220 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:02,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 694 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-05 02:31:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-05 02:31:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 135. [2024-11-05 02:31:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 102 states have internal predecessors, (124), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:31:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 180 transitions. [2024-11-05 02:31:02,666 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 180 transitions. Word has length 74 [2024-11-05 02:31:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:02,667 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 180 transitions. [2024-11-05 02:31:02,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:31:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 180 transitions. [2024-11-05 02:31:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-05 02:31:02,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:02,667 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:02,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-05 02:31:02,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:02,870 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:02,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1124158908, now seen corresponding path program 1 times [2024-11-05 02:31:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803728462] [2024-11-05 02:31:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:02,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:02,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:02,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-05 02:31:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:03,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-05 02:31:03,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:03,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:03,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:31:03,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:03,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:03,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:03,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:03,292 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:03,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:31:03,326 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:03,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:31:03,355 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:03,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:31:03,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:31:03,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:03,673 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:03,673 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 164 treesize of output 114 [2024-11-05 02:31:03,723 INFO L349 Elim1Store]: treesize reduction 50, result has 41.2 percent of original size [2024-11-05 02:31:03,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 104 [2024-11-05 02:31:03,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-05 02:31:03,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-05 02:31:03,804 INFO L349 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2024-11-05 02:31:03,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 57 [2024-11-05 02:31:03,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:03,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2024-11-05 02:31:03,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-05 02:31:03,856 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:03,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:31:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-05 02:31:06,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-05 02:31:06,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803728462] [2024-11-05 02:31:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803728462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:06,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3] total 14 [2024-11-05 02:31:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931570629] [2024-11-05 02:31:06,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:06,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 02:31:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 02:31:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-05 02:31:06,393 INFO L87 Difference]: Start difference. First operand 135 states and 180 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:31:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:11,029 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2024-11-05 02:31:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 02:31:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 75 [2024-11-05 02:31:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:11,031 INFO L225 Difference]: With dead ends: 270 [2024-11-05 02:31:11,031 INFO L226 Difference]: Without dead ends: 213 [2024-11-05 02:31:11,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:31:11,032 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 138 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:11,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 917 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-05 02:31:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-05 02:31:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 76. [2024-11-05 02:31:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-05 02:31:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-11-05 02:31:11,059 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 75 [2024-11-05 02:31:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:11,059 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-11-05 02:31:11,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-05 02:31:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-11-05 02:31:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-05 02:31:11,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:11,060 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:11,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-05 02:31:11,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:11,260 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:11,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 137287748, now seen corresponding path program 1 times [2024-11-05 02:31:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335732404] [2024-11-05 02:31:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:11,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:11,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:11,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:11,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-05 02:31:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:11,417 WARN L253 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-05 02:31:11,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:11,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:11,485 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 02:31:11,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:11,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:11,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:11,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:11,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:31:13,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:31:14,343 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335732404] [2024-11-05 02:31:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [335732404] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:31:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:31:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2024-11-05 02:31:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73385168] [2024-11-05 02:31:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:31:14,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:31:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:31:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:31:14,345 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-05 02:31:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:18,317 INFO L93 Difference]: Finished difference Result 210 states and 281 transitions. [2024-11-05 02:31:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:31:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 81 [2024-11-05 02:31:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:18,319 INFO L225 Difference]: With dead ends: 210 [2024-11-05 02:31:18,319 INFO L226 Difference]: Without dead ends: 152 [2024-11-05 02:31:18,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:31:18,320 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 72 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:18,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 675 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-05 02:31:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-05 02:31:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2024-11-05 02:31:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 104 states have internal predecessors, (126), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-05 02:31:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2024-11-05 02:31:18,362 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 81 [2024-11-05 02:31:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:18,362 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2024-11-05 02:31:18,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-05 02:31:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2024-11-05 02:31:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 02:31:18,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:18,363 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:18,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-05 02:31:18,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:18,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:18,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 431382673, now seen corresponding path program 1 times [2024-11-05 02:31:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940962020] [2024-11-05 02:31:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:18,565 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:18,566 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-05 02:31:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:18,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-05 02:31:18,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:18,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:18,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:18,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:18,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-05 02:31:18,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:18,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:18,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:18,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 02:31:20,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:21,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3114 treesize of output 3082 [2024-11-05 02:31:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:31:21,341 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940962020] [2024-11-05 02:31:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [940962020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:21,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:21,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-05 02:31:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69256936] [2024-11-05 02:31:21,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:21,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:31:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:31:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:31:21,343 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:31:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:25,819 INFO L93 Difference]: Finished difference Result 233 states and 319 transitions. [2024-11-05 02:31:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 02:31:25,820 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 83 [2024-11-05 02:31:25,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:25,822 INFO L225 Difference]: With dead ends: 233 [2024-11-05 02:31:25,822 INFO L226 Difference]: Without dead ends: 174 [2024-11-05 02:31:25,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-05 02:31:25,823 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 121 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:25,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1162 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-05 02:31:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-05 02:31:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2024-11-05 02:31:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 100 states have (on average 1.3) internal successors, (130), 106 states have internal predecessors, (130), 25 states have call successors, (25), 10 states have call predecessors, (25), 14 states have return successors, (33), 23 states have call predecessors, (33), 23 states have call successors, (33) [2024-11-05 02:31:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2024-11-05 02:31:25,879 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 83 [2024-11-05 02:31:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:25,879 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2024-11-05 02:31:25,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:31:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2024-11-05 02:31:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 02:31:25,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:25,880 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:25,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-05 02:31:26,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:26,081 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:26,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947066, now seen corresponding path program 1 times [2024-11-05 02:31:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606788407] [2024-11-05 02:31:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:26,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:26,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:26,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:26,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-05 02:31:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:26,251 WARN L253 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-05 02:31:26,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:26,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:26,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:31:26,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:26,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:26,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:26,505 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:31:26,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:31:26,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-05 02:31:26,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:26,537 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:31:26,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:31:26,562 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:31:26,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:31:26,843 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:31:26,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:31:26,879 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:31:26,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:31:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 02:31:33,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:31:34,016 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:34,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606788407] [2024-11-05 02:31:34,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [606788407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:34,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:34,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7] total 25 [2024-11-05 02:31:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123489714] [2024-11-05 02:31:34,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:34,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:31:34,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:31:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:31:34,018 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:31:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:43,057 INFO L93 Difference]: Finished difference Result 287 states and 389 transitions. [2024-11-05 02:31:43,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-05 02:31:43,058 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 83 [2024-11-05 02:31:43,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:43,060 INFO L225 Difference]: With dead ends: 287 [2024-11-05 02:31:43,060 INFO L226 Difference]: Without dead ends: 228 [2024-11-05 02:31:43,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=127, Invalid=1063, Unknown=0, NotChecked=0, Total=1190 [2024-11-05 02:31:43,061 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 108 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:43,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1699 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-05 02:31:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-05 02:31:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2024-11-05 02:31:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.297029702970297) internal successors, (131), 107 states have internal predecessors, (131), 25 states have call successors, (25), 10 states have call predecessors, (25), 14 states have return successors, (33), 23 states have call predecessors, (33), 23 states have call successors, (33) [2024-11-05 02:31:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2024-11-05 02:31:43,116 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 83 [2024-11-05 02:31:43,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:43,117 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2024-11-05 02:31:43,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.130434782608695) internal successors, (95), 22 states have internal predecessors, (95), 7 states have call successors, (17), 4 states have call predecessors, (17), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-05 02:31:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2024-11-05 02:31:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-05 02:31:43,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:43,118 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:43,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-05 02:31:43,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:43,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:43,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -233275002, now seen corresponding path program 1 times [2024-11-05 02:31:43,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849358300] [2024-11-05 02:31:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:43,322 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:43,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:43,323 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:43,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-05 02:31:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:43,511 WARN L253 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-05 02:31:43,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:43,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:43,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:31:43,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:43,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:43,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:31:43,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:43,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 02:31:46,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 02:31:47,515 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849358300] [2024-11-05 02:31:47,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1849358300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:47,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:47,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 6] total 26 [2024-11-05 02:31:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786256871] [2024-11-05 02:31:47,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:47,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 02:31:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:47,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 02:31:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:31:47,517 INFO L87 Difference]: Start difference. First operand 141 states and 189 transitions. Second operand has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:31:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:31:53,249 INFO L93 Difference]: Finished difference Result 265 states and 359 transitions. [2024-11-05 02:31:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-05 02:31:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 84 [2024-11-05 02:31:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:31:53,251 INFO L225 Difference]: With dead ends: 265 [2024-11-05 02:31:53,251 INFO L226 Difference]: Without dead ends: 160 [2024-11-05 02:31:53,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-05 02:31:53,252 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 69 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:31:53,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 874 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-05 02:31:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-05 02:31:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 145. [2024-11-05 02:31:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 111 states have internal predecessors, (133), 25 states have call successors, (25), 10 states have call predecessors, (25), 16 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-05 02:31:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2024-11-05 02:31:53,315 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 84 [2024-11-05 02:31:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:31:53,315 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2024-11-05 02:31:53,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.363636363636363) internal successors, (96), 22 states have internal predecessors, (96), 9 states have call successors, (17), 3 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-05 02:31:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2024-11-05 02:31:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-05 02:31:53,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:31:53,317 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 02:31:53,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-05 02:31:53,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:53,517 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:31:53,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:31:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 788375522, now seen corresponding path program 1 times [2024-11-05 02:31:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:31:53,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130864176] [2024-11-05 02:31:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:31:53,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:31:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:31:53,519 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:31:53,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-05 02:31:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:31:53,706 WARN L253 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-05 02:31:53,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:31:53,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:31:53,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:53,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:31:53,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:53,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:31:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-05 02:31:56,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:31:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-05 02:31:57,748 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:31:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130864176] [2024-11-05 02:31:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1130864176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:31:57,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:31:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 28 [2024-11-05 02:31:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861916900] [2024-11-05 02:31:57,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:31:57,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-05 02:31:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:31:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-05 02:31:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-05 02:31:57,749 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 28 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 9 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16)