/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_begin_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 02:27:22,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 02:27:22,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 02:27:22,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 02:27:22,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 02:27:22,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 02:27:22,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 02:27:22,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 02:27:22,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 02:27:22,327 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 02:27:22,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 02:27:22,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 02:27:22,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 02:27:22,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 02:27:22,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 02:27:22,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 02:27:22,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 02:27:22,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 02:27:22,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 02:27:22,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 02:27:22,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 02:27:22,334 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 02:27:22,334 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 02:27:22,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 02:27:22,335 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 02:27:22,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 02:27:22,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 02:27:22,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 02:27:22,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 02:27:22,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 02:27:22,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 02:27:22,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:22,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 02:27:22,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 02:27:22,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 02:27:22,338 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 02:27:22,338 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 02:27:22,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 02:27:22,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 02:27:22,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 02:27:22,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 02:27:22,340 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:22,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 02:27:22,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 02:27:22,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 02:27:22,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 02:27:22,596 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 02:27:22,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i [2024-11-05 02:27:24,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 02:27:24,443 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 02:27:24,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i [2024-11-05 02:27:24,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3edb45747/648180a6a7aa404ea4ee45f7890b8707/FLAGa4d260a06 [2024-11-05 02:27:24,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3edb45747/648180a6a7aa404ea4ee45f7890b8707 [2024-11-05 02:27:24,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 02:27:24,641 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 02:27:24,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:24,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 02:27:24,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 02:27:24,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:24" (1/1) ... [2024-11-05 02:27:24,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230ff370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:24, skipping insertion in model container [2024-11-05 02:27:24,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:27:24" (1/1) ... [2024-11-05 02:27:24,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:25,078 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_begin_harness_negated.i[4495,4508] [2024-11-05 02:27:25,090 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_begin_harness_negated.i[4555,4568] [2024-11-05 02:27:25,691 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,788 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,789 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,790 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,807 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,809 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,813 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,814 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,814 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,814 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,815 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,820 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,820 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,823 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,824 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,836 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,837 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,837 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,838 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,839 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,841 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,841 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,842 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,844 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,845 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,845 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:25,845 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:25,846 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,134 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,135 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,136 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,136 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,273 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:26,319 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 02:27:26,352 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 02:27:26,358 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_begin_harness_negated.i[4495,4508] [2024-11-05 02:27:26,359 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_begin_harness_negated.i[4555,4568] [2024-11-05 02:27:26,381 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,402 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,402 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,403 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,411 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,413 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,413 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,413 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,418 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,419 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,420 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,420 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,427 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,428 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,428 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,428 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,429 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,429 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,429 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,429 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,430 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,431 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,431 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,431 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,431 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,432 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,498 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,499 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,534 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 02:27:26,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:26,549 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 02:27:26,566 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i[4495,4508] [2024-11-05 02:27:26,567 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_begin_harness_negated.i[4555,4568] [2024-11-05 02:27:26,610 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,610 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,610 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,611 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,611 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,619 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,619 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,621 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,621 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,622 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,622 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,623 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,623 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 02:27:26,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 02:27:26,973 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 02:27:26,986 INFO L204 MainTranslator]: Completed translation [2024-11-05 02:27:26,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26 WrapperNode [2024-11-05 02:27:26,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 02:27:26,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:26,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 02:27:26,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 02:27:26,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,132 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 144 [2024-11-05 02:27:27,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 02:27:27,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 02:27:27,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 02:27:27,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 02:27:27,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,176 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 02:27:27,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 02:27:27,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 02:27:27,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 02:27:27,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 02:27:27,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (1/1) ... [2024-11-05 02:27:27,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 02:27:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 02:27:27,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 02:27:27,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 02:27:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 02:27:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 02:27:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 02:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 02:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 02:27:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 02:27:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-05 02:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 02:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 02:27:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 02:27:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 02:27:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-05 02:27:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-05 02:27:27,612 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 02:27:27,615 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 02:27:28,001 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-05 02:27:28,002 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 02:27:28,018 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 02:27:28,018 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-05 02:27:28,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:28 BoogieIcfgContainer [2024-11-05 02:27:28,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 02:27:28,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 02:27:28,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 02:27:28,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 02:27:28,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:27:24" (1/3) ... [2024-11-05 02:27:28,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf1a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:28, skipping insertion in model container [2024-11-05 02:27:28,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:27:26" (2/3) ... [2024-11-05 02:27:28,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf1a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:27:28, skipping insertion in model container [2024-11-05 02:27:28,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:27:28" (3/3) ... [2024-11-05 02:27:28,028 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness_negated.i [2024-11-05 02:27:28,043 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 02:27:28,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 02:27:28,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 02:27:28,122 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;@75a1cb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 02:27:28,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 02:27:28,128 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 02:27:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:27:28,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:28,139 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 02:27:28,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:28,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1062572114, now seen corresponding path program 1 times [2024-11-05 02:27:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:28,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268602599] [2024-11-05 02:27:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:28,157 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:28,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:28,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 02:27:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:28,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 02:27:28,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:28,496 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 02:27:28,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:28,562 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 02:27:28,563 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268602599] [2024-11-05 02:27:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268602599] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:27:28,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:27:28,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-05 02:27:28,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592791693] [2024-11-05 02:27:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:28,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 02:27:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 02:27:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 02:27:28,593 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 02:27:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:28,625 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-05 02:27:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 02:27:28,627 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 02:27:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:28,634 INFO L225 Difference]: With dead ends: 130 [2024-11-05 02:27:28,635 INFO L226 Difference]: Without dead ends: 64 [2024-11-05 02:27:28,638 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 02:27:28,641 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 02:27:28,642 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 02:27:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-05 02:27:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-05 02:27:28,689 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 02:27:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-05 02:27:28,695 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-05 02:27:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:28,696 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-05 02:27:28,696 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 02:27:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-05 02:27:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-05 02:27:28,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:28,701 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 02:27:28,705 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 02:27:28,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:28,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:28,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1946087212, now seen corresponding path program 1 times [2024-11-05 02:27:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506163792] [2024-11-05 02:27:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:28,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:28,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:28,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 02:27:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:29,137 WARN L253 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-05 02:27:29,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:29,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:29,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:29,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:29,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:29,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:29,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:29,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-05 02:27:33,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:34,589 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 02:27:34,589 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:34,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506163792] [2024-11-05 02:27:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [506163792] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:27:34,590 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:27:34,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 6] imperfect sequences [] total 18 [2024-11-05 02:27:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150302486] [2024-11-05 02:27:34,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:27:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:27:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:27:34,594 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:37,141 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2024-11-05 02:27:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 02:27:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 68 [2024-11-05 02:27:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:37,146 INFO L225 Difference]: With dead ends: 140 [2024-11-05 02:27:37,146 INFO L226 Difference]: Without dead ends: 138 [2024-11-05 02:27:37,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:27:37,148 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 62 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:37,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 778 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-05 02:27:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-05 02:27:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2024-11-05 02:27:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.288888888888889) internal successors, (116), 94 states have internal predecessors, (116), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:27:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2024-11-05 02:27:37,180 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 68 [2024-11-05 02:27:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:37,181 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2024-11-05 02:27:37,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.466666666666667) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2024-11-05 02:27:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-05 02:27:37,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:37,184 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 02:27:37,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-05 02:27:37,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:37,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:37,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:37,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1476585288, now seen corresponding path program 1 times [2024-11-05 02:27:37,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:37,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997572147] [2024-11-05 02:27:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:37,388 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:37,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:37,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 02:27:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:37,560 WARN L253 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:27:37,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:37,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:37,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:37,710 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 02:27:37,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:37,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:37,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:37,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:37,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:27:41,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:41,752 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 02:27:41,752 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997572147] [2024-11-05 02:27:41,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [997572147] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:27:41,753 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:27:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 7] imperfect sequences [] total 22 [2024-11-05 02:27:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985704292] [2024-11-05 02:27:41,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:41,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-05 02:27:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-05 02:27:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-05 02:27:41,755 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:45,455 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2024-11-05 02:27:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-05 02:27:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2024-11-05 02:27:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:45,459 INFO L225 Difference]: With dead ends: 161 [2024-11-05 02:27:45,459 INFO L226 Difference]: Without dead ends: 159 [2024-11-05 02:27:45,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2024-11-05 02:27:45,460 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 83 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:45,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 733 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-05 02:27:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-05 02:27:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2024-11-05 02:27:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 96 states have internal predecessors, (118), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:27:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2024-11-05 02:27:45,488 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 70 [2024-11-05 02:27:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:45,489 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2024-11-05 02:27:45,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 16 states have internal predecessors, (59), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2024-11-05 02:27:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 02:27:45,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:45,492 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 02:27:45,496 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 02:27:45,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:45,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:45,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1205099605, now seen corresponding path program 1 times [2024-11-05 02:27:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317250207] [2024-11-05 02:27:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:45,694 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:45,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:27:45,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 02:27:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:45,855 WARN L253 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-05 02:27:45,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:45,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:45,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:45,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:45,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:46,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:46,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:46,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:27:49,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:50,130 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 02:27:50,131 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317250207] [2024-11-05 02:27:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [317250207] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:27:50,131 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:27:50,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 9] imperfect sequences [] total 26 [2024-11-05 02:27:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205793315] [2024-11-05 02:27:50,132 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:50,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-05 02:27:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-05 02:27:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2024-11-05 02:27:50,134 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:27:54,155 INFO L93 Difference]: Finished difference Result 175 states and 240 transitions. [2024-11-05 02:27:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-05 02:27:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 72 [2024-11-05 02:27:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:27:54,158 INFO L225 Difference]: With dead ends: 175 [2024-11-05 02:27:54,158 INFO L226 Difference]: Without dead ends: 173 [2024-11-05 02:27:54,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2024-11-05 02:27:54,161 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 99 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-05 02:27:54,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 865 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-05 02:27:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-05 02:27:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 134. [2024-11-05 02:27:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 98 states have internal predecessors, (120), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:27:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 178 transitions. [2024-11-05 02:27:54,200 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 178 transitions. Word has length 72 [2024-11-05 02:27:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:27:54,200 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 178 transitions. [2024-11-05 02:27:54,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:27:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 178 transitions. [2024-11-05 02:27:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-05 02:27:54,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:27:54,203 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 02:27:54,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-05 02:27:54,405 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 02:27:54,406 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:27:54,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:27:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1455165852, now seen corresponding path program 1 times [2024-11-05 02:27:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:27:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673176475] [2024-11-05 02:27:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:27:54,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:27:54,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:27:54,410 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 02:27:54,411 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 02:27:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:27:54,576 WARN L253 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-05 02:27:54,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:27:54,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:27:54,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:27:54,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:54,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:27:54,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:27:54,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:54,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2024-11-05 02:27:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-05 02:27:57,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:27:57,578 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 02:27:57,578 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:27:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673176475] [2024-11-05 02:27:57,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1673176475] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 02:27:57,578 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 02:27:57,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 3] imperfect sequences [] total 15 [2024-11-05 02:27:57,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862734647] [2024-11-05 02:27:57,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 02:27:57,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-05 02:27:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:27:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-05 02:27:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-05 02:27:57,581 INFO L87 Difference]: Start difference. First operand 134 states and 178 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:28:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:00,087 INFO L93 Difference]: Finished difference Result 269 states and 370 transitions. [2024-11-05 02:28:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 02:28:00,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 73 [2024-11-05 02:28:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:00,090 INFO L225 Difference]: With dead ends: 269 [2024-11-05 02:28:00,091 INFO L226 Difference]: Without dead ends: 153 [2024-11-05 02:28:00,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:28:00,093 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:00,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 504 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-05 02:28:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-05 02:28:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2024-11-05 02:28:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 102 states have internal predecessors, (126), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-05 02:28:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2024-11-05 02:28:00,122 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 73 [2024-11-05 02:28:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:00,123 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2024-11-05 02:28:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-05 02:28:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2024-11-05 02:28:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-05 02:28:00,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:00,124 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-05 02:28:00,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-05 02:28:00,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:00,325 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:00,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -997200532, now seen corresponding path program 1 times [2024-11-05 02:28:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710048665] [2024-11-05 02:28:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:00,326 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:00,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:00,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:00,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-05 02:28:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:00,486 WARN L253 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-05 02:28:00,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:00,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:00,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:00,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:00,593 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 02:28:00,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:00,719 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 02:28:00,731 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 02:28:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:28:01,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:28:02,441 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710048665] [2024-11-05 02:28:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1710048665] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:02,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-05 02:28:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142778986] [2024-11-05 02:28:02,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:02,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:28:02,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:28:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-05 02:28:02,443 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-05 02:28:04,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:04,283 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-11-05 02:28:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 02:28:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-05 02:28:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:04,285 INFO L225 Difference]: With dead ends: 203 [2024-11-05 02:28:04,285 INFO L226 Difference]: Without dead ends: 142 [2024-11-05 02:28:04,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-05 02:28:04,290 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 59 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:04,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 520 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 02:28:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-05 02:28:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2024-11-05 02:28:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 104 states have internal predecessors, (127), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (35), 24 states have call predecessors, (35), 24 states have call successors, (35) [2024-11-05 02:28:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2024-11-05 02:28:04,339 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 74 [2024-11-05 02:28:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:04,339 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2024-11-05 02:28:04,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-05 02:28:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2024-11-05 02:28:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-05 02:28:04,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:04,341 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] [2024-11-05 02:28:04,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-05 02:28:04,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:04,542 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:04,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 174462792, now seen corresponding path program 1 times [2024-11-05 02:28:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770805459] [2024-11-05 02:28:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:04,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:04,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:04,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:04,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-05 02:28:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:04,716 WARN L253 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-05 02:28:04,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:04,731 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 02:28:04,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:04,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:04,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:04,947 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 02:28:04,967 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 02:28:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:28:05,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:28:06,555 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770805459] [2024-11-05 02:28:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1770805459] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-05 02:28:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888318943] [2024-11-05 02:28:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:06,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-05 02:28:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-05 02:28:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:28:06,557 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:28:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:08,294 INFO L93 Difference]: Finished difference Result 208 states and 279 transitions. [2024-11-05 02:28:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 02:28:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-05 02:28:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:08,297 INFO L225 Difference]: With dead ends: 208 [2024-11-05 02:28:08,297 INFO L226 Difference]: Without dead ends: 145 [2024-11-05 02:28:08,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:28:08,298 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 50 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:08,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 426 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-05 02:28:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-05 02:28:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2024-11-05 02:28:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.2772277227722773) internal successors, (129), 107 states have internal predecessors, (129), 26 states have call successors, (26), 11 states have call predecessors, (26), 15 states have return successors, (37), 24 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-05 02:28:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 192 transitions. [2024-11-05 02:28:08,337 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 192 transitions. Word has length 76 [2024-11-05 02:28:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:08,338 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 192 transitions. [2024-11-05 02:28:08,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:28:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 192 transitions. [2024-11-05 02:28:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-05 02:28:08,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:08,339 INFO L215 NwaCegarLoop]: trace histogram [3, 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 02:28:08,343 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 02:28:08,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:08,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:08,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1845067606, now seen corresponding path program 1 times [2024-11-05 02:28:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023294242] [2024-11-05 02:28:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:08,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:08,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 02:28:08,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-05 02:28:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:08,724 WARN L253 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-05 02:28:08,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:08,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:08,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:08,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:08,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:08,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:08,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:09,023 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:09,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:09,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:09,067 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:09,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:09,113 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:09,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:09,442 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:09,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:09,489 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:09,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:28:13,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-05 02:28:13,911 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023294242] [2024-11-05 02:28:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2023294242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:13,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:13,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2024-11-05 02:28:13,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729762779] [2024-11-05 02:28:13,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:13,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-05 02:28:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:13,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-05 02:28:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-05 02:28:13,913 INFO L87 Difference]: Start difference. First operand 143 states and 192 transitions. Second operand has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 02:28:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:18,166 INFO L93 Difference]: Finished difference Result 281 states and 376 transitions. [2024-11-05 02:28:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:28:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 76 [2024-11-05 02:28:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:18,169 INFO L225 Difference]: With dead ends: 281 [2024-11-05 02:28:18,169 INFO L226 Difference]: Without dead ends: 219 [2024-11-05 02:28:18,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-05 02:28:18,170 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 108 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:18,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1223 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-05 02:28:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-05 02:28:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2024-11-05 02:28:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 112 states have internal predecessors, (133), 26 states have call successors, (26), 12 states have call predecessors, (26), 17 states have return successors, (40), 24 states have call predecessors, (40), 24 states have call successors, (40) [2024-11-05 02:28:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2024-11-05 02:28:18,208 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 76 [2024-11-05 02:28:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:18,209 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2024-11-05 02:28:18,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 6 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-05 02:28:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2024-11-05 02:28:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 02:28:18,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:18,210 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] [2024-11-05 02:28:18,214 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 02:28:18,410 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 02:28:18,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:18,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2007641899, now seen corresponding path program 1 times [2024-11-05 02:28:18,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:18,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078845714] [2024-11-05 02:28:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:18,412 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:18,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:18,413 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 02:28:18,414 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 02:28:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:18,591 WARN L253 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-05 02:28:18,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:18,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:18,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:18,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:18,855 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 02:28:18,877 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 02:28:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:28:20,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:28:20,756 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078845714] [2024-11-05 02:28:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2078845714] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:20,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2024-11-05 02:28:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202709468] [2024-11-05 02:28:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:20,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 02:28:20,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 02:28:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:28:20,758 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:28:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:23,607 INFO L93 Difference]: Finished difference Result 224 states and 300 transitions. [2024-11-05 02:28:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 02:28:23,607 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2024-11-05 02:28:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:23,608 INFO L225 Difference]: With dead ends: 224 [2024-11-05 02:28:23,608 INFO L226 Difference]: Without dead ends: 158 [2024-11-05 02:28:23,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:23,610 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 68 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:23,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 686 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-05 02:28:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-05 02:28:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-11-05 02:28:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 106 states have (on average 1.2641509433962264) internal successors, (134), 113 states have internal predecessors, (134), 26 states have call successors, (26), 12 states have call predecessors, (26), 17 states have return successors, (40), 24 states have call predecessors, (40), 24 states have call successors, (40) [2024-11-05 02:28:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2024-11-05 02:28:23,653 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 78 [2024-11-05 02:28:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:23,653 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2024-11-05 02:28:23,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-05 02:28:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2024-11-05 02:28:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 02:28:23,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:23,655 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] [2024-11-05 02:28:23,659 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 02:28:23,855 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 02:28:23,856 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:23,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1417990918, now seen corresponding path program 1 times [2024-11-05 02:28:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452979073] [2024-11-05 02:28:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:23,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:23,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:23,859 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 02:28:23,860 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 02:28:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:24,054 WARN L253 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-05 02:28:24,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:24,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:24,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:24,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:24,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:24,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:24,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:24,380 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:24,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:24,395 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:24,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:24,437 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:24,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:24,735 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:24,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:24,773 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:24,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:28:26,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:28:27,558 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452979073] [2024-11-05 02:28:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452979073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:27,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2024-11-05 02:28:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237691247] [2024-11-05 02:28:27,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:27,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:28:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:28:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-05 02:28:27,559 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:28:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:31,488 INFO L93 Difference]: Finished difference Result 292 states and 393 transitions. [2024-11-05 02:28:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:28:31,489 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 78 [2024-11-05 02:28:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:31,490 INFO L225 Difference]: With dead ends: 292 [2024-11-05 02:28:31,490 INFO L226 Difference]: Without dead ends: 229 [2024-11-05 02:28:31,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 138 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 02:28:31,492 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 163 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:31,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 727 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-05 02:28:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-05 02:28:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 153. [2024-11-05 02:28:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 116 states have internal predecessors, (136), 26 states have call successors, (26), 12 states have call predecessors, (26), 18 states have return successors, (42), 24 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-05 02:28:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 204 transitions. [2024-11-05 02:28:31,545 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 204 transitions. Word has length 78 [2024-11-05 02:28:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:31,546 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 204 transitions. [2024-11-05 02:28:31,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:28:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 204 transitions. [2024-11-05 02:28:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-05 02:28:31,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:31,547 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] [2024-11-05 02:28:31,551 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 02:28:31,747 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 02:28:31,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:31,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash -978021101, now seen corresponding path program 1 times [2024-11-05 02:28:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88066209] [2024-11-05 02:28:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:31,750 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 02:28:31,752 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 02:28:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:31,969 WARN L253 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 151 conjuncts are in the unsatisfiable core [2024-11-05 02:28:31,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:31,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:31,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:31,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:32,191 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 02:28:32,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:32,320 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:32,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:32,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-05 02:28:32,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:32,359 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:32,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:32,382 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:32,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:32,679 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:32,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:32,713 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:32,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2024-11-05 02:28:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:28:35,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-05 02:28:36,003 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:36,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88066209] [2024-11-05 02:28:36,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [88066209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:36,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:36,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2024-11-05 02:28:36,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726199089] [2024-11-05 02:28:36,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:36,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-05 02:28:36,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-05 02:28:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-05 02:28:36,005 INFO L87 Difference]: Start difference. First operand 153 states and 204 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:28:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:39,107 INFO L93 Difference]: Finished difference Result 309 states and 418 transitions. [2024-11-05 02:28:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-05 02:28:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 80 [2024-11-05 02:28:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:39,109 INFO L225 Difference]: With dead ends: 309 [2024-11-05 02:28:39,109 INFO L226 Difference]: Without dead ends: 243 [2024-11-05 02:28:39,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 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 02:28:39,111 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 233 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:39,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 522 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-05 02:28:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-05 02:28:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 85. [2024-11-05 02:28:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 64 states have internal predecessors, (74), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (22), 13 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-05 02:28:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2024-11-05 02:28:39,156 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 80 [2024-11-05 02:28:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:39,156 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2024-11-05 02:28:39,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 19 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-05 02:28:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2024-11-05 02:28:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-05 02:28:39,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:39,158 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, 1, 1, 1] [2024-11-05 02:28:39,161 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 02:28:39,358 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 02:28:39,358 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:39,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1157454716, now seen corresponding path program 1 times [2024-11-05 02:28:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56594517] [2024-11-05 02:28:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:39,360 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 02:28:39,361 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 02:28:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:39,590 WARN L253 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-05 02:28:39,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:39,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:39,663 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 02:28:39,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:39,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:39,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:39,786 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 02:28:39,799 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 02:28:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-05 02:28:41,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-05 02:28:42,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:42,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56594517] [2024-11-05 02:28:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [56594517] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 02:28:42,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 02:28:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2024-11-05 02:28:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138554578] [2024-11-05 02:28:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 02:28:42,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-05 02:28:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-05 02:28:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-05 02:28:42,393 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-05 02:28:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:46,183 INFO L93 Difference]: Finished difference Result 235 states and 314 transitions. [2024-11-05 02:28:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-05 02:28:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 87 [2024-11-05 02:28:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:46,185 INFO L225 Difference]: With dead ends: 235 [2024-11-05 02:28:46,185 INFO L226 Difference]: Without dead ends: 168 [2024-11-05 02:28:46,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2024-11-05 02:28:46,187 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 60 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:46,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 776 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-05 02:28:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-05 02:28:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2024-11-05 02:28:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 118 states have internal predecessors, (138), 26 states have call successors, (26), 12 states have call predecessors, (26), 18 states have return successors, (42), 24 states have call predecessors, (42), 24 states have call successors, (42) [2024-11-05 02:28:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2024-11-05 02:28:46,260 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 87 [2024-11-05 02:28:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:46,260 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2024-11-05 02:28:46,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 5 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-05 02:28:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2024-11-05 02:28:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 02:28:46,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:46,261 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, 1, 1, 1, 1, 1] [2024-11-05 02:28:46,265 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 02:28:46,462 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 02:28:46,462 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:46,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2080112879, now seen corresponding path program 1 times [2024-11-05 02:28:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065691408] [2024-11-05 02:28:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:46,463 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:46,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:46,464 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 02:28:46,465 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 02:28:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:46,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-05 02:28:46,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:46,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:46,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:46,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:46,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:46,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 02:28:46,860 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 02:28:46,871 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 02:28:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-05 02:28:48,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 02:28:49,201 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 734 treesize of output 726 [2024-11-05 02:28:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-05 02:28:49,393 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 02:28:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065691408] [2024-11-05 02:28:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2065691408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 02:28:49,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 02:28:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-05 02:28:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59133446] [2024-11-05 02:28:49,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 02:28:49,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-05 02:28:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 02:28:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-05 02:28:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-05 02:28:49,395 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:28:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 02:28:53,091 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2024-11-05 02:28:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-05 02:28:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 89 [2024-11-05 02:28:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 02:28:53,093 INFO L225 Difference]: With dead ends: 256 [2024-11-05 02:28:53,093 INFO L226 Difference]: Without dead ends: 188 [2024-11-05 02:28:53,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-05 02:28:53,094 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 188 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-05 02:28:53,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1056 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-05 02:28:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-05 02:28:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2024-11-05 02:28:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 120 states have internal predecessors, (142), 27 states have call successors, (27), 12 states have call predecessors, (27), 18 states have return successors, (43), 25 states have call predecessors, (43), 25 states have call successors, (43) [2024-11-05 02:28:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 212 transitions. [2024-11-05 02:28:53,163 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 212 transitions. Word has length 89 [2024-11-05 02:28:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 02:28:53,164 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 212 transitions. [2024-11-05 02:28:53,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-05 02:28:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 212 transitions. [2024-11-05 02:28:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 02:28:53,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 02:28:53,165 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, 1, 1, 1, 1, 1] [2024-11-05 02:28:53,169 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 02:28:53,365 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 02:28:53,366 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 02:28:53,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 02:28:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash 197772806, now seen corresponding path program 1 times [2024-11-05 02:28:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 02:28:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402617395] [2024-11-05 02:28:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 02:28:53,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 02:28:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 02:28:53,368 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 02:28:53,369 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 02:28:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 02:28:53,613 WARN L253 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-05 02:28:53,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 02:28:53,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-05 02:28:53,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:53,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-05 02:28:53,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-05 02:28:53,804 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 02:28:53,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-05 02:28:53,911 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-05 02:28:53,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2024-11-05 02:28:53,948 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-05 02:28:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-05 02:28:53,984 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 02:28:53,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 02:28:54,246 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-05 02:28:54,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 93 [2024-11-05 02:28:54,284 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-05 02:28:54,285 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