/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 15:06:58,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 15:06:58,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 15:06:58,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 15:06:58,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 15:06:58,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 15:06:58,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 15:06:58,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 15:06:58,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 15:06:58,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 15:06:58,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 15:06:58,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 15:06:58,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 15:06:58,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 15:06:58,238 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 15:06:58,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 15:06:58,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 15:06:58,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 15:06:58,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 15:06:58,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 15:06:58,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 15:06:58,240 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 15:06:58,240 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 15:06:58,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 15:06:58,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 15:06:58,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 15:06:58,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 15:06:58,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 15:06:58,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 15:06:58,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 15:06:58,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 15:06:58,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:06:58,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 15:06:58,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 15:06:58,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 15:06:58,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 15:06:58,243 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 15:06:58,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 15:06:58,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 15:06:58,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 15:06:58,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 15:06:58,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:06:58,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 15:06:58,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 15:06:58,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 15:06:58,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 15:06:58,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 15:06:58,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-04 15:06:59,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 15:07:00,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 15:07:00,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i [2024-11-04 15:07:00,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4821bee1d/8f3a6d9d176e4574b344965944491d4f/FLAG631f015c3 [2024-11-04 15:07:00,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4821bee1d/8f3a6d9d176e4574b344965944491d4f [2024-11-04 15:07:00,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 15:07:00,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 15:07:00,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 15:07:00,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 15:07:00,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 15:07:00,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:07:00" (1/1) ... [2024-11-04 15:07:00,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12aa2338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:00, skipping insertion in model container [2024-11-04 15:07:00,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:07:00" (1/1) ... [2024-11-04 15:07:00,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:07:00,681 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2024-11-04 15:07:00,690 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2024-11-04 15:07:01,352 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,435 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,436 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,436 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,446 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,451 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,452 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,452 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,453 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,453 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,454 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,456 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,456 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,459 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,462 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,474 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,474 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,475 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,475 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,484 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,485 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,485 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,485 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,486 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,489 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,490 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,490 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,491 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,491 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,746 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,746 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,747 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,747 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,850 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:01,883 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 15:07:01,916 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 15:07:01,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2024-11-04 15:07:01,922 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2024-11-04 15:07:01,953 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,977 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,987 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,988 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,989 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,989 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,989 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,990 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,993 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:01,995 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:01,995 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,001 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,001 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,010 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,010 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,010 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,011 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,011 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,012 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,012 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,012 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,018 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,018 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,019 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,019 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,019 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,019 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,095 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,096 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,096 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,097 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,140 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 15:07:02,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:02,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 15:07:02,163 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2024-11-04 15:07:02,164 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2024-11-04 15:07:02,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,204 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,204 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,206 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,206 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,207 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,208 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,208 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,209 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 15:07:02,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 15:07:02,427 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-04 15:07:02,435 INFO L204 MainTranslator]: Completed translation [2024-11-04 15:07:02,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02 WrapperNode [2024-11-04 15:07:02,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 15:07:02,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 15:07:02,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 15:07:02,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 15:07:02,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,581 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 136 [2024-11-04 15:07:02,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 15:07:02,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 15:07:02,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 15:07:02,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 15:07:02,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,630 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 20, 5]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2024-11-04 15:07:02,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 15:07:02,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 15:07:02,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 15:07:02,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 15:07:02,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (1/1) ... [2024-11-04 15:07:02,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 15:07:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:02,714 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) [2024-11-04 15:07:02,716 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 [2024-11-04 15:07:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2024-11-04 15:07:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2024-11-04 15:07:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 15:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-04 15:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-04 15:07:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 15:07:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 15:07:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 15:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 15:07:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-04 15:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-04 15:07:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 15:07:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 15:07:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 15:07:02,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 15:07:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 15:07:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 15:07:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 15:07:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 15:07:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 15:07:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-04 15:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-04 15:07:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-04 15:07:02,743 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-04 15:07:03,007 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 15:07:03,009 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 15:07:03,344 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-04 15:07:03,344 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 15:07:03,356 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 15:07:03,356 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-04 15:07:03,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:07:03 BoogieIcfgContainer [2024-11-04 15:07:03,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 15:07:03,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 15:07:03,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 15:07:03,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 15:07:03,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:07:00" (1/3) ... [2024-11-04 15:07:03,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffbf845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:07:03, skipping insertion in model container [2024-11-04 15:07:03,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:07:02" (2/3) ... [2024-11-04 15:07:03,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffbf845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:07:03, skipping insertion in model container [2024-11-04 15:07:03,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:07:03" (3/3) ... [2024-11-04 15:07:03,364 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2024-11-04 15:07:03,378 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 15:07:03,378 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 15:07:03,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 15:07:03,434 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;@4ea4d536, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 15:07:03,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 15:07:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-04 15:07:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 15:07:03,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:03,446 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:03,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:03,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash -722894815, now seen corresponding path program 1 times [2024-11-04 15:07:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:03,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98629905] [2024-11-04 15:07:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:03,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:03,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:03,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:03,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 15:07:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:03,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 15:07:03,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 15:07:03,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 15:07:03,706 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:03,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98629905] [2024-11-04 15:07:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [98629905] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:03,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-04 15:07:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747611196] [2024-11-04 15:07:03,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:03,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 15:07:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 15:07:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:07:03,731 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-04 15:07:03,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:03,759 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-04 15:07:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 15:07:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-04 15:07:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:03,767 INFO L225 Difference]: With dead ends: 188 [2024-11-04 15:07:03,767 INFO L226 Difference]: Without dead ends: 93 [2024-11-04 15:07:03,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 15:07:03,773 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:03,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-04 15:07:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-04 15:07:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-04 15:07:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-04 15:07:03,807 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-04 15:07:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:03,808 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-04 15:07:03,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-04 15:07:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-04 15:07:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 15:07:03,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:03,810 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:03,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:04,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:04,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:04,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -723996839, now seen corresponding path program 1 times [2024-11-04 15:07:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:04,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483022401] [2024-11-04 15:07:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:04,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:04,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:04,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 15:07:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:04,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-04 15:07:04,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-04 15:07:04,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-04 15:07:04,293 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483022401] [2024-11-04 15:07:04,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1483022401] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:04,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:04,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-04 15:07:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626029790] [2024-11-04 15:07:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:04,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 15:07:04,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 15:07:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:04,296 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-04 15:07:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:04,346 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-11-04 15:07:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 15:07:04,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2024-11-04 15:07:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:04,349 INFO L225 Difference]: With dead ends: 169 [2024-11-04 15:07:04,349 INFO L226 Difference]: Without dead ends: 95 [2024-11-04 15:07:04,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-04 15:07:04,350 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:04,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-04 15:07:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-04 15:07:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 15:07:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2024-11-04 15:07:04,363 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 84 [2024-11-04 15:07:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:04,363 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2024-11-04 15:07:04,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-04 15:07:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2024-11-04 15:07:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-04 15:07:04,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:04,368 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:04,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 15:07:04,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:04,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:04,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2086865941, now seen corresponding path program 1 times [2024-11-04 15:07:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318739367] [2024-11-04 15:07:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:04,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:04,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:04,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:04,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 15:07:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:04,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-04 15:07:04,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 15:07:04,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 15:07:05,011 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318739367] [2024-11-04 15:07:05,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [318739367] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:05,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:05,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2024-11-04 15:07:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002873156] [2024-11-04 15:07:05,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:05,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 15:07:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 15:07:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-04 15:07:05,016 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 15:07:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:05,192 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2024-11-04 15:07:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 15:07:05,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 86 [2024-11-04 15:07:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:05,194 INFO L225 Difference]: With dead ends: 176 [2024-11-04 15:07:05,194 INFO L226 Difference]: Without dead ends: 97 [2024-11-04 15:07:05,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:07:05,196 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 32 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:05,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 681 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:07:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-04 15:07:05,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-04 15:07:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 15:07:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-11-04 15:07:05,205 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 86 [2024-11-04 15:07:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:05,205 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-11-04 15:07:05,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 15:07:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-11-04 15:07:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-04 15:07:05,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:05,206 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:05,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-04 15:07:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:05,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:05,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1429995906, now seen corresponding path program 1 times [2024-11-04 15:07:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050171914] [2024-11-04 15:07:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:05,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:05,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:05,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 15:07:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:05,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-04 15:07:05,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 15:07:05,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 15:07:05,826 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050171914] [2024-11-04 15:07:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1050171914] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2024-11-04 15:07:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614180655] [2024-11-04 15:07:05,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 15:07:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 15:07:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-04 15:07:05,828 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 15:07:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:06,027 INFO L93 Difference]: Finished difference Result 182 states and 241 transitions. [2024-11-04 15:07:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 15:07:06,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-04 15:07:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:06,029 INFO L225 Difference]: With dead ends: 182 [2024-11-04 15:07:06,029 INFO L226 Difference]: Without dead ends: 102 [2024-11-04 15:07:06,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-04 15:07:06,031 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:06,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 765 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 15:07:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-04 15:07:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-04 15:07:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 64 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 15:07:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2024-11-04 15:07:06,042 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 88 [2024-11-04 15:07:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:06,043 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2024-11-04 15:07:06,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-04 15:07:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2024-11-04 15:07:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-04 15:07:06,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:06,044 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:06,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-04 15:07:06,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:06,245 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:06,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1848432154, now seen corresponding path program 1 times [2024-11-04 15:07:06,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472835986] [2024-11-04 15:07:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:06,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:06,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:06,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:06,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-04 15:07:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:06,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 15:07:06,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:07:06,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-04 15:07:06,594 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:06,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472835986] [2024-11-04 15:07:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [472835986] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:06,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:06,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-04 15:07:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509658817] [2024-11-04 15:07:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:06,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-04 15:07:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-04 15:07:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:06,596 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-04 15:07:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:06,649 INFO L93 Difference]: Finished difference Result 177 states and 236 transitions. [2024-11-04 15:07:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-04 15:07:06,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-11-04 15:07:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:06,653 INFO L225 Difference]: With dead ends: 177 [2024-11-04 15:07:06,653 INFO L226 Difference]: Without dead ends: 100 [2024-11-04 15:07:06,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:06,654 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:06,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 231 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-04 15:07:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2024-11-04 15:07:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 65 states have internal predecessors, (77), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 15:07:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2024-11-04 15:07:06,686 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 89 [2024-11-04 15:07:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:06,686 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2024-11-04 15:07:06,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-04 15:07:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2024-11-04 15:07:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-04 15:07:06,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:06,687 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:06,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:06,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:06,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:06,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2017477272, now seen corresponding path program 1 times [2024-11-04 15:07:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404409064] [2024-11-04 15:07:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:06,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:06,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:06,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:06,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-04 15:07:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:07,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 15:07:07,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-04 15:07:07,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-04 15:07:07,276 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:07,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404409064] [2024-11-04 15:07:07,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [404409064] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:07,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:07,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-04 15:07:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716664276] [2024-11-04 15:07:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:07,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 15:07:07,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 15:07:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:07,278 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-04 15:07:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:07,341 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2024-11-04 15:07:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 15:07:07,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2024-11-04 15:07:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:07,343 INFO L225 Difference]: With dead ends: 178 [2024-11-04 15:07:07,343 INFO L226 Difference]: Without dead ends: 100 [2024-11-04 15:07:07,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 15:07:07,344 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:07,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:07:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-04 15:07:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-04 15:07:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.21875) internal successors, (78), 66 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-04 15:07:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-04 15:07:07,353 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 97 [2024-11-04 15:07:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:07,353 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-04 15:07:07,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-04 15:07:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-04 15:07:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 15:07:07,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:07,354 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:07,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:07,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:07,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:07,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -63854059, now seen corresponding path program 1 times [2024-11-04 15:07:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684414703] [2024-11-04 15:07:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:07,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:07,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-04 15:07:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:07,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-04 15:07:07,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:07,759 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 [2024-11-04 15:07:12,102 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64))))) is different from true [2024-11-04 15:07:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:07:12,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-04 15:07:12,637 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684414703] [2024-11-04 15:07:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1684414703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:07:12,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:07:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-04 15:07:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427215188] [2024-11-04 15:07:12,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:07:12,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 15:07:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 15:07:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-04 15:07:12,639 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-04 15:07:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:13,525 INFO L93 Difference]: Finished difference Result 221 states and 300 transitions. [2024-11-04 15:07:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-04 15:07:13,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 99 [2024-11-04 15:07:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:13,530 INFO L225 Difference]: With dead ends: 221 [2024-11-04 15:07:13,530 INFO L226 Difference]: Without dead ends: 142 [2024-11-04 15:07:13,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-04 15:07:13,532 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 67 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:13,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1104 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 382 Invalid, 0 Unknown, 308 Unchecked, 0.7s Time] [2024-11-04 15:07:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-04 15:07:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2024-11-04 15:07:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.25) internal successors, (100), 82 states have internal predecessors, (100), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 15:07:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2024-11-04 15:07:13,549 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 99 [2024-11-04 15:07:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:13,549 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2024-11-04 15:07:13,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-04 15:07:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2024-11-04 15:07:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 15:07:13,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:13,550 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:13,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-04 15:07:13,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,755 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:13,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1897720599, now seen corresponding path program 1 times [2024-11-04 15:07:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133012360] [2024-11-04 15:07:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:13,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:13,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:13,757 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:13,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-04 15:07:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:13,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 15:07:13,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-04 15:07:13,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-04 15:07:13,949 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133012360] [2024-11-04 15:07:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [133012360] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:13,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 15:07:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975725425] [2024-11-04 15:07:13,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:13,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:07:13,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:07:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:13,951 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 15:07:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:13,977 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2024-11-04 15:07:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:07:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-04 15:07:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:13,981 INFO L225 Difference]: With dead ends: 214 [2024-11-04 15:07:13,981 INFO L226 Difference]: Without dead ends: 117 [2024-11-04 15:07:13,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:13,982 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:13,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-04 15:07:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2024-11-04 15:07:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.2375) internal successors, (99), 82 states have internal predecessors, (99), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 15:07:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2024-11-04 15:07:14,004 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 99 [2024-11-04 15:07:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:14,007 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2024-11-04 15:07:14,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 15:07:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2024-11-04 15:07:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 15:07:14,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:14,009 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:14,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-04 15:07:14,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,210 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:14,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1836546919, now seen corresponding path program 1 times [2024-11-04 15:07:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468582220] [2024-11-04 15:07:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:14,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:14,213 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:14,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-04 15:07:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:14,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 15:07:14,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-04 15:07:14,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-04 15:07:14,407 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468582220] [2024-11-04 15:07:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1468582220] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:07:14,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:07:14,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 15:07:14,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399508339] [2024-11-04 15:07:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:07:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:07:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:14,409 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 15:07:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:14,430 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2024-11-04 15:07:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:07:14,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-04 15:07:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:14,431 INFO L225 Difference]: With dead ends: 213 [2024-11-04 15:07:14,432 INFO L226 Difference]: Without dead ends: 116 [2024-11-04 15:07:14,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:07:14,433 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:14,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:07:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-04 15:07:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-04 15:07:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-04 15:07:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-11-04 15:07:14,442 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 99 [2024-11-04 15:07:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:14,442 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-11-04 15:07:14,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-04 15:07:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-11-04 15:07:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:14,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:14,443 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:14,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-04 15:07:14,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,644 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:14,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash -913140813, now seen corresponding path program 1 times [2024-11-04 15:07:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:14,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055075047] [2024-11-04 15:07:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:14,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:14,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-04 15:07:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:14,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-04 15:07:14,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:07:16,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:18,100 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-04 15:07:18,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-04 15:07:18,134 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-04 15:07:18,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-04 15:07:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-04 15:07:18,179 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055075047] [2024-11-04 15:07:18,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2055075047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:07:18,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:07:18,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2024-11-04 15:07:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842087206] [2024-11-04 15:07:18,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:07:18,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-04 15:07:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-04 15:07:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-04 15:07:18,181 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-04 15:07:22,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:26,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:30,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:34,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:39,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:07:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:42,845 INFO L93 Difference]: Finished difference Result 272 states and 345 transitions. [2024-11-04 15:07:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-04 15:07:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 100 [2024-11-04 15:07:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:42,847 INFO L225 Difference]: With dead ends: 272 [2024-11-04 15:07:42,847 INFO L226 Difference]: Without dead ends: 181 [2024-11-04 15:07:42,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 175 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2024-11-04 15:07:42,848 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 127 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 54 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:42,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1042 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 586 Invalid, 5 Unknown, 0 Unchecked, 23.6s Time] [2024-11-04 15:07:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-04 15:07:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-04 15:07:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-04 15:07:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2024-11-04 15:07:42,885 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 100 [2024-11-04 15:07:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:42,885 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2024-11-04 15:07:42,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.944444444444445) internal successors, (89), 18 states have internal predecessors, (89), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-04 15:07:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2024-11-04 15:07:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:42,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:42,890 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:42,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-04 15:07:43,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:43,091 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:43,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1722487439, now seen corresponding path program 1 times [2024-11-04 15:07:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275957292] [2024-11-04 15:07:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:43,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:43,094 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:43,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-04 15:07:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:43,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-04 15:07:43,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:43,531 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 11 treesize of output 7 [2024-11-04 15:07:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-04 15:07:43,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-04 15:07:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-04 15:07:45,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:47,329 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-04 15:07:47,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 185 [2024-11-04 15:07:47,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2024-11-04 15:07:47,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-04 15:07:47,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 93 [2024-11-04 15:07:47,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-04 15:07:47,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-04 15:07:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-04 15:07:47,968 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:07:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275957292] [2024-11-04 15:07:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [275957292] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 15:07:47,968 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 15:07:47,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2024-11-04 15:07:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014226414] [2024-11-04 15:07:47,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 15:07:47,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-04 15:07:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:07:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-04 15:07:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-04 15:07:47,973 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 19 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 15:07:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:07:53,243 INFO L93 Difference]: Finished difference Result 428 states and 536 transitions. [2024-11-04 15:07:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-04 15:07:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 19 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-04 15:07:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:07:53,250 INFO L225 Difference]: With dead ends: 428 [2024-11-04 15:07:53,250 INFO L226 Difference]: Without dead ends: 338 [2024-11-04 15:07:53,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 168 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2024-11-04 15:07:53,251 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 117 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-04 15:07:53,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1070 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-04 15:07:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-04 15:07:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 188. [2024-11-04 15:07:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 141 states have internal predecessors, (165), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (34), 29 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-04 15:07:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 230 transitions. [2024-11-04 15:07:53,289 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 230 transitions. Word has length 100 [2024-11-04 15:07:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:07:53,289 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 230 transitions. [2024-11-04 15:07:53,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 19 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 15:07:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 230 transitions. [2024-11-04 15:07:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:07:53,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:07:53,293 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:07:53,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-04 15:07:53,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:53,497 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:07:53,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:07:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2115514449, now seen corresponding path program 1 times [2024-11-04 15:07:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:07:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60924378] [2024-11-04 15:07:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:07:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:07:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:07:53,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:07:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-04 15:07:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:07:53,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-04 15:07:53,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:07:53,747 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 [2024-11-04 15:07:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-04 15:07:56,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:07:59,913 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-04 15:07:59,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-04 15:08:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-04 15:08:00,126 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60924378] [2024-11-04 15:08:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [60924378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:08:00,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:08:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 25 [2024-11-04 15:08:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720628535] [2024-11-04 15:08:00,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:08:00,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-04 15:08:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-04 15:08:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-04 15:08:00,128 INFO L87 Difference]: Start difference. First operand 188 states and 230 transitions. Second operand has 25 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 15:08:04,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:08,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:12,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:16,409 INFO L93 Difference]: Finished difference Result 278 states and 343 transitions. [2024-11-04 15:08:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-04 15:08:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-04 15:08:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:16,417 INFO L225 Difference]: With dead ends: 278 [2024-11-04 15:08:16,417 INFO L226 Difference]: Without dead ends: 195 [2024-11-04 15:08:16,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=271, Invalid=1369, Unknown=0, NotChecked=0, Total=1640 [2024-11-04 15:08:16,418 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 147 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:16,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1268 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 829 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2024-11-04 15:08:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-04 15:08:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2024-11-04 15:08:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.1884057971014492) internal successors, (164), 141 states have internal predecessors, (164), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (34), 29 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-04 15:08:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2024-11-04 15:08:16,460 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 100 [2024-11-04 15:08:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:16,461 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2024-11-04 15:08:16,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-04 15:08:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2024-11-04 15:08:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-04 15:08:16,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:16,462 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:16,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-04 15:08:16,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:16,663 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:16,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1857349011, now seen corresponding path program 1 times [2024-11-04 15:08:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:16,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424868046] [2024-11-04 15:08:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:16,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:16,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:16,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-04 15:08:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:16,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-04 15:08:16,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 43 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-04 15:08:19,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:20,624 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 8 treesize of output 4 [2024-11-04 15:08:20,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-04 15:08:20,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2024-11-04 15:08:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-04 15:08:21,584 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424868046] [2024-11-04 15:08:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [424868046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 15:08:21,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 15:08:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 26 [2024-11-04 15:08:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916271306] [2024-11-04 15:08:21,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 15:08:21,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-04 15:08:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-04 15:08:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-04 15:08:21,586 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand has 26 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-04 15:08:25,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:29,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-04 15:08:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:35,821 INFO L93 Difference]: Finished difference Result 480 states and 605 transitions. [2024-11-04 15:08:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-04 15:08:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 100 [2024-11-04 15:08:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:35,824 INFO L225 Difference]: With dead ends: 480 [2024-11-04 15:08:35,824 INFO L226 Difference]: Without dead ends: 367 [2024-11-04 15:08:35,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=405, Invalid=2247, Unknown=0, NotChecked=0, Total=2652 [2024-11-04 15:08:35,830 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 406 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 122 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:35,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1775 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1304 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2024-11-04 15:08:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-04 15:08:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 311. [2024-11-04 15:08:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 229 states have (on average 1.2096069868995634) internal successors, (277), 234 states have internal predecessors, (277), 52 states have call successors, (52), 25 states have call predecessors, (52), 29 states have return successors, (61), 51 states have call predecessors, (61), 50 states have call successors, (61) [2024-11-04 15:08:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 390 transitions. [2024-11-04 15:08:35,868 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 390 transitions. Word has length 100 [2024-11-04 15:08:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:35,869 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 390 transitions. [2024-11-04 15:08:35,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-04 15:08:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 390 transitions. [2024-11-04 15:08:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-04 15:08:35,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:35,870 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:35,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-04 15:08:36,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:36,071 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:36,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1587708324, now seen corresponding path program 1 times [2024-11-04 15:08:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:36,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076192899] [2024-11-04 15:08:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:36,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:36,073 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:36,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-04 15:08:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:36,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-04 15:08:36,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-04 15:08:36,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:37,357 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-04 15:08:37,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-04 15:08:37,404 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-04 15:08:37,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-04 15:08:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-04 15:08:37,455 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076192899] [2024-11-04 15:08:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2076192899] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:08:37,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:08:37,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2024-11-04 15:08:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782076352] [2024-11-04 15:08:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:08:37,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-04 15:08:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-04 15:08:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-04 15:08:37,459 INFO L87 Difference]: Start difference. First operand 311 states and 390 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:38,757 INFO L93 Difference]: Finished difference Result 579 states and 769 transitions. [2024-11-04 15:08:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-04 15:08:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2024-11-04 15:08:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:38,760 INFO L225 Difference]: With dead ends: 579 [2024-11-04 15:08:38,760 INFO L226 Difference]: Without dead ends: 382 [2024-11-04 15:08:38,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-04 15:08:38,761 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 15 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:38,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 713 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-04 15:08:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-04 15:08:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 332. [2024-11-04 15:08:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 247 states have (on average 1.214574898785425) internal successors, (300), 252 states have internal predecessors, (300), 52 states have call successors, (52), 25 states have call predecessors, (52), 32 states have return successors, (69), 54 states have call predecessors, (69), 50 states have call successors, (69) [2024-11-04 15:08:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 421 transitions. [2024-11-04 15:08:38,804 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 421 transitions. Word has length 110 [2024-11-04 15:08:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:38,804 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 421 transitions. [2024-11-04 15:08:38,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 421 transitions. [2024-11-04 15:08:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-04 15:08:38,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:38,806 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:38,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-04 15:08:39,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:39,007 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:39,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:39,007 INFO L85 PathProgramCache]: Analyzing trace with hash 351453722, now seen corresponding path program 1 times [2024-11-04 15:08:39,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359974355] [2024-11-04 15:08:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:39,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:39,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:39,009 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:39,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-04 15:08:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:39,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-04 15:08:39,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-04 15:08:39,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-04 15:08:39,395 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359974355] [2024-11-04 15:08:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [359974355] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:08:39,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:08:39,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-04 15:08:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414310782] [2024-11-04 15:08:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:08:39,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-04 15:08:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-04 15:08:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-04 15:08:39,396 INFO L87 Difference]: Start difference. First operand 332 states and 421 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:39,484 INFO L93 Difference]: Finished difference Result 618 states and 809 transitions. [2024-11-04 15:08:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-04 15:08:39,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2024-11-04 15:08:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:39,486 INFO L225 Difference]: With dead ends: 618 [2024-11-04 15:08:39,486 INFO L226 Difference]: Without dead ends: 344 [2024-11-04 15:08:39,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-04 15:08:39,488 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:39,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 15:08:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-04 15:08:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2024-11-04 15:08:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 254 states have (on average 1.1968503937007875) internal successors, (304), 258 states have internal predecessors, (304), 52 states have call successors, (52), 25 states have call predecessors, (52), 34 states have return successors, (79), 57 states have call predecessors, (79), 50 states have call successors, (79) [2024-11-04 15:08:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 435 transitions. [2024-11-04 15:08:39,529 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 435 transitions. Word has length 110 [2024-11-04 15:08:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:39,530 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 435 transitions. [2024-11-04 15:08:39,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 435 transitions. [2024-11-04 15:08:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-04 15:08:39,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:39,532 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:39,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-04 15:08:39,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:39,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:39,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2068788582, now seen corresponding path program 1 times [2024-11-04 15:08:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978532982] [2024-11-04 15:08:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:39,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:39,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:39,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:39,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-04 15:08:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:39,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-04 15:08:39,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-04 15:08:39,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 15:08:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-04 15:08:40,102 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 15:08:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978532982] [2024-11-04 15:08:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978532982] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 15:08:40,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 15:08:40,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-04 15:08:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943034140] [2024-11-04 15:08:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 15:08:40,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-04 15:08:40,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 15:08:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-04 15:08:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:08:40,103 INFO L87 Difference]: Start difference. First operand 341 states and 435 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 15:08:40,163 INFO L93 Difference]: Finished difference Result 603 states and 786 transitions. [2024-11-04 15:08:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 15:08:40,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2024-11-04 15:08:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 15:08:40,165 INFO L225 Difference]: With dead ends: 603 [2024-11-04 15:08:40,165 INFO L226 Difference]: Without dead ends: 322 [2024-11-04 15:08:40,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-04 15:08:40,166 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 15:08:40,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 15:08:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-04 15:08:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2024-11-04 15:08:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 238 states have (on average 1.1638655462184875) internal successors, (277), 243 states have internal predecessors, (277), 52 states have call successors, (52), 25 states have call predecessors, (52), 31 states have return successors, (67), 53 states have call predecessors, (67), 50 states have call successors, (67) [2024-11-04 15:08:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 396 transitions. [2024-11-04 15:08:40,250 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 396 transitions. Word has length 110 [2024-11-04 15:08:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 15:08:40,251 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 396 transitions. [2024-11-04 15:08:40,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-04 15:08:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 396 transitions. [2024-11-04 15:08:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-04 15:08:40,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 15:08:40,251 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 15:08:40,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-04 15:08:40,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:40,452 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 15:08:40,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 15:08:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1648459392, now seen corresponding path program 2 times [2024-11-04 15:08:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 15:08:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487414504] [2024-11-04 15:08:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 15:08:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 15:08:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 15:08:40,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 15:08:40,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-04 15:08:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 15:08:40,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-04 15:08:40,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 15:08:40,644 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