./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 215e983f1a4d8fc7cc2a4702392b572c8acf5b74a884ac30ea5939c84fb288fd --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:55:45,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:55:45,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:55:45,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:55:45,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:55:45,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:55:45,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:55:45,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:55:45,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:55:45,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:55:45,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:55:45,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:55:45,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:55:45,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:55:45,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:55:45,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:55:45,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:55:45,141 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:55:45,141 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:55:45,141 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:55:45,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:55:45,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:55:45,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:55:45,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:55:45,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:55:45,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:55:45,142 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:55:45,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:55:45,143 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 215e983f1a4d8fc7cc2a4702392b572c8acf5b74a884ac30ea5939c84fb288fd [2025-02-08 01:55:45,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:55:45,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:55:45,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:55:45,398 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:55:45,398 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:55:45,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2025-02-08 01:55:46,539 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e091f6bdc/81e57982be844a0d889551d818007a45/FLAG6f592a031 [2025-02-08 01:55:47,025 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:55:47,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2025-02-08 01:55:47,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e091f6bdc/81e57982be844a0d889551d818007a45/FLAG6f592a031 [2025-02-08 01:55:47,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e091f6bdc/81e57982be844a0d889551d818007a45 [2025-02-08 01:55:47,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:55:47,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:55:47,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:55:47,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:55:47,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:55:47,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:55:47" (1/1) ... [2025-02-08 01:55:47,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bf628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:47, skipping insertion in model container [2025-02-08 01:55:47,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:55:47" (1/1) ... [2025-02-08 01:55:47,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:55:47,408 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2025-02-08 01:55:47,415 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2025-02-08 01:55:47,883 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,884 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,884 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,885 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,885 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,893 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,894 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,895 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,895 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,896 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,897 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,897 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:47,897 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,271 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,277 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,322 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,328 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,328 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,328 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,328 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,329 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,329 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,329 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,336 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,336 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,336 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,336 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,347 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,347 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,350 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:55:48,399 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:55:48,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2025-02-08 01:55:48,410 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2025-02-08 01:55:48,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,436 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,468 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,471 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,471 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,471 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,472 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,472 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,472 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,473 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,549 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,554 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,562 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2025-02-08 01:55:48,581 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,584 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,584 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,585 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,585 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,585 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,585 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,585 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,586 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,587 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,587 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,587 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,589 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,589 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,592 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:48,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:55:48,717 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:55:48,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48 WrapperNode [2025-02-08 01:55:48,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:55:48,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:55:48,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:55:48,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:55:48,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,837 INFO L138 Inliner]: procedures = 686, calls = 1930, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1055 [2025-02-08 01:55:48,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:55:48,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:55:48,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:55:48,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:55:48,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,950 INFO L175 MemorySlicer]: Split 392 memory accesses to 6 slices as follows [2, 96, 17, 3, 13, 261]. 67 percent of accesses are in the largest equivalence class. The 30 initializations are split as follows [2, 0, 4, 1, 11, 12]. The 262 writes are split as follows [0, 18, 3, 1, 0, 240]. [2025-02-08 01:55:48,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:48,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:49,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:49,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:49,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:55:49,029 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:55:49,029 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:55:49,029 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:55:49,029 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (1/1) ... [2025-02-08 01:55:49,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:55:49,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:55:49,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:55:49,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:55:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2025-02-08 01:55:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-02-08 01:55:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:55:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:55:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:55:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:55:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2025-02-08 01:55:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:55:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:55:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:55:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2025-02-08 01:55:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:55:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2025-02-08 01:55:49,087 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2025-02-08 01:55:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 01:55:49,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2025-02-08 01:55:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2025-02-08 01:55:49,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:55:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2025-02-08 01:55:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2025-02-08 01:55:49,330 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:55:49,332 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:55:49,365 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L6935: havoc #t~malloc583.base, #t~malloc583.offset; [2025-02-08 01:55:49,368 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-02-08 01:55:49,386 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2590: havoc #t~ret57#1; [2025-02-08 01:55:49,422 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L6949: havoc #t~ret587;havoc #t~ite589.base, #t~ite589.offset;havoc #t~ret588.base, #t~ret588.offset; [2025-02-08 01:55:49,476 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8272: havoc aws_priority_queue_backpointers_valid_#t~ret874#1;havoc aws_priority_queue_backpointers_valid_#t~short875#1; [2025-02-08 01:55:49,534 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2944: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-02-08 01:55:49,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:55:49,602 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8186: havoc ~node~1.base, ~node~1.offset; [2025-02-08 01:55:49,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8120: s_sift_either_#t~ret844#1 := s_sift_down_#res#1;havoc s_sift_down_#t~ret813#1, s_sift_down_#t~mem814#1, s_sift_down_#t~ret815#1, s_sift_down_#t~ret816#1, s_sift_down_#t~ret817#1, s_sift_down_#t~mem818#1.base, s_sift_down_#t~mem818#1.offset, s_sift_down_#t~mem819#1.base, s_sift_down_#t~mem819#1.offset, s_sift_down_#t~mem820#1.base, s_sift_down_#t~mem820#1.offset, s_sift_down_#t~ret821#1, s_sift_down_#t~mem822#1.base, s_sift_down_#t~mem822#1.offset, s_sift_down_#t~ret823#1, s_sift_down_#t~mem824#1.base, s_sift_down_#t~mem824#1.offset, s_sift_down_#t~mem825#1.base, s_sift_down_#t~mem825#1.offset, s_sift_down_#t~mem826#1.base, s_sift_down_#t~mem826#1.offset, s_sift_down_#t~ret827#1, s_sift_down_#t~mem828#1.base, s_sift_down_#t~mem828#1.offset, s_sift_down_~left~0#1, s_sift_down_~right~0#1, s_sift_down_~first~0#1, s_sift_down_~#first_item~0#1.base, s_sift_down_~#first_item~0#1.offset, s_sift_down_~#other_item~0#1.base, s_sift_down_~#other_item~0#1.offset, s_sift_down_#t~ret829#1, s_sift_down_~queue#1.base, s_sift_down_~queue#1.offset, s_sift_down_~root#1, s_sift_down_~did_move~0#1, s_sift_down_~len~2#1;havoc s_sift_down_#in~queue#1.base, s_sift_down_#in~queue#1.offset, s_sift_down_#in~root#1;assume { :end_inline_s_sift_down } true;havoc s_sift_either_#t~ret844#1; [2025-02-08 01:55:49,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8382: call ULTIMATE.dealloc(~#backpointer~0#1.base, ~#backpointer~0#1.offset);havoc ~#backpointer~0#1.base, ~#backpointer~0#1.offset; [2025-02-08 01:55:49,722 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L262: havoc nondet_int_#t~nondet5#1; [2025-02-08 01:55:49,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7268: havoc nondet_compare_#t~ret668#1; [2025-02-08 01:55:49,741 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3203: havoc #t~ret243; [2025-02-08 01:55:49,746 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7392: havoc #t~ret681.base, #t~ret681.offset; [2025-02-08 01:55:49,777 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8082: call ULTIMATE.dealloc(~#parent_item~0.base, ~#parent_item~0.offset);havoc ~#parent_item~0.base, ~#parent_item~0.offset;call ULTIMATE.dealloc(~#child_item~0.base, ~#child_item~0.offset);havoc ~#child_item~0.base, ~#child_item~0.offset; [2025-02-08 01:55:49,857 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3188: havoc #t~ret236; [2025-02-08 01:55:54,828 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8429-2: havoc aws_priority_queue_pop_#t~ret938#1; [2025-02-08 01:55:55,065 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3121: havoc #t~ret187; [2025-02-08 01:55:55,065 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3108: havoc ~last_item_offset~1; [2025-02-08 01:55:55,219 INFO L? ?]: Removed 249 outVars from TransFormulas that were not future-live. [2025-02-08 01:55:55,219 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:55:55,241 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:55:55,241 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:55:55,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:55:55 BoogieIcfgContainer [2025-02-08 01:55:55,242 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:55:55,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:55:55,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:55:55,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:55:55,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:55:47" (1/3) ... [2025-02-08 01:55:55,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439e9f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:55:55, skipping insertion in model container [2025-02-08 01:55:55,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:48" (2/3) ... [2025-02-08 01:55:55,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439e9f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:55:55, skipping insertion in model container [2025-02-08 01:55:55,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:55:55" (3/3) ... [2025-02-08 01:55:55,248 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2025-02-08 01:55:55,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:55:55,258 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_pop_harness.i that has 34 procedures, 466 locations, 1 initial locations, 11 loop locations, and 2 error locations. [2025-02-08 01:55:55,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:55:55,302 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;@688ebbc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:55:55,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 01:55:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 446 states, 249 states have (on average 1.248995983935743) internal successors, (311), 257 states have internal predecessors, (311), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2025-02-08 01:55:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-08 01:55:55,313 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:55:55,314 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:55:55,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:55:55,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:55:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 711157596, now seen corresponding path program 1 times [2025-02-08 01:55:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:55:55,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163287133] [2025-02-08 01:55:55,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:55:59,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-08 01:56:00,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-08 01:56:00,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:00,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-02-08 01:56:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:56:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163287133] [2025-02-08 01:56:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163287133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:56:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764790205] [2025-02-08 01:56:00,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:00,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:56:00,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:56:00,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:56:04,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-08 01:56:05,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-08 01:56:05,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:05,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:05,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 4540 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:56:05,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:56:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-02-08 01:56:05,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:56:05,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764790205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:56:05,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:56:05,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:56:05,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735796720] [2025-02-08 01:56:05,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:56:05,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:56:05,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:56:05,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:56:05,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:56:05,351 INFO L87 Difference]: Start difference. First operand has 446 states, 249 states have (on average 1.248995983935743) internal successors, (311), 257 states have internal predecessors, (311), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-08 01:56:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:56:05,426 INFO L93 Difference]: Finished difference Result 866 states and 1340 transitions. [2025-02-08 01:56:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:56:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2025-02-08 01:56:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:56:05,436 INFO L225 Difference]: With dead ends: 866 [2025-02-08 01:56:05,437 INFO L226 Difference]: Without dead ends: 431 [2025-02-08 01:56:05,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:56:05,445 INFO L435 NwaCegarLoop]: 628 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, 628 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 [2025-02-08 01:56:05,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:56:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-02-08 01:56:05,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2025-02-08 01:56:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 242 states have (on average 1.2272727272727273) internal successors, (297), 247 states have internal predecessors, (297), 160 states have call successors, (160), 28 states have call predecessors, (160), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2025-02-08 01:56:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 613 transitions. [2025-02-08 01:56:05,531 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 613 transitions. Word has length 161 [2025-02-08 01:56:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:56:05,532 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 613 transitions. [2025-02-08 01:56:05,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-02-08 01:56:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 613 transitions. [2025-02-08 01:56:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-08 01:56:05,538 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:56:05,538 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:56:05,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:56:05,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-08 01:56:05,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:56:05,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:56:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1665055705, now seen corresponding path program 1 times [2025-02-08 01:56:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:56:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730327650] [2025-02-08 01:56:05,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:56:09,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-08 01:56:09,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-08 01:56:09,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:09,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2025-02-08 01:56:10,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:56:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730327650] [2025-02-08 01:56:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730327650] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:56:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375320216] [2025-02-08 01:56:10,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:10,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:10,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:56:10,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:56:10,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:56:14,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-08 01:56:15,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-08 01:56:15,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:15,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:15,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 4540 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:56:15,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:56:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-08 01:56:16,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:56:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375320216] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:56:16,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:56:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:56:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116653233] [2025-02-08 01:56:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:56:16,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:56:16,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:56:16,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:56:16,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:56:16,078 INFO L87 Difference]: Start difference. First operand 431 states and 613 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-08 01:56:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:56:17,635 INFO L93 Difference]: Finished difference Result 816 states and 1178 transitions. [2025-02-08 01:56:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:56:17,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 161 [2025-02-08 01:56:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:56:17,640 INFO L225 Difference]: With dead ends: 816 [2025-02-08 01:56:17,640 INFO L226 Difference]: Without dead ends: 433 [2025-02-08 01:56:17,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:56:17,643 INFO L435 NwaCegarLoop]: 579 mSDtfsCounter, 31 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 01:56:17,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2234 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 01:56:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2025-02-08 01:56:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2025-02-08 01:56:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 243 states have (on average 1.2263374485596708) internal successors, (298), 249 states have internal predecessors, (298), 160 states have call successors, (160), 28 states have call predecessors, (160), 28 states have return successors, (169), 156 states have call predecessors, (169), 156 states have call successors, (169) [2025-02-08 01:56:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 627 transitions. [2025-02-08 01:56:17,667 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 627 transitions. Word has length 161 [2025-02-08 01:56:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:56:17,667 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 627 transitions. [2025-02-08 01:56:17,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-02-08 01:56:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 627 transitions. [2025-02-08 01:56:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-08 01:56:17,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:56:17,669 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:56:17,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 01:56:17,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:17,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:56:17,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:56:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash -448223621, now seen corresponding path program 1 times [2025-02-08 01:56:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:56:17,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508467570] [2025-02-08 01:56:17,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:17,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:56:21,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-08 01:56:21,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-08 01:56:21,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:21,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-08 01:56:23,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:56:23,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508467570] [2025-02-08 01:56:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508467570] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:56:23,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685477636] [2025-02-08 01:56:23,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:23,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:23,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:56:23,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:56:23,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:56:27,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-08 01:56:27,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-08 01:56:27,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:27,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:27,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 4590 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:56:27,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:56:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-08 01:56:29,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:56:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685477636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:56:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:56:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2025-02-08 01:56:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744925100] [2025-02-08 01:56:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:56:29,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:56:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:56:29,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:56:29,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:56:29,379 INFO L87 Difference]: Start difference. First operand 433 states and 627 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-02-08 01:56:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:56:33,366 INFO L93 Difference]: Finished difference Result 839 states and 1249 transitions. [2025-02-08 01:56:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:56:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 169 [2025-02-08 01:56:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:56:33,374 INFO L225 Difference]: With dead ends: 839 [2025-02-08 01:56:33,374 INFO L226 Difference]: Without dead ends: 454 [2025-02-08 01:56:33,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:56:33,378 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 58 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:56:33,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 3214 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-02-08 01:56:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2025-02-08 01:56:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2025-02-08 01:56:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 259 states have (on average 1.2355212355212355) internal successors, (320), 265 states have internal predecessors, (320), 162 states have call successors, (162), 28 states have call predecessors, (162), 29 states have return successors, (188), 159 states have call predecessors, (188), 158 states have call successors, (188) [2025-02-08 01:56:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 670 transitions. [2025-02-08 01:56:33,400 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 670 transitions. Word has length 169 [2025-02-08 01:56:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:56:33,401 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 670 transitions. [2025-02-08 01:56:33,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-02-08 01:56:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 670 transitions. [2025-02-08 01:56:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-02-08 01:56:33,403 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:56:33,403 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:56:33,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:56:33,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:33,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:56:33,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:56:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1996830623, now seen corresponding path program 1 times [2025-02-08 01:56:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:56:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405141596] [2025-02-08 01:56:33,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:56:37,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 01:56:37,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 01:56:37,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:37,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2025-02-08 01:56:38,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:56:38,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405141596] [2025-02-08 01:56:38,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405141596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:56:38,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467271319] [2025-02-08 01:56:38,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:38,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:38,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:56:38,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:56:38,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:56:43,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 01:56:43,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 01:56:43,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:43,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:43,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 4717 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:56:43,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:56:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-08 01:56:45,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:56:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467271319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:56:45,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:56:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-08 01:56:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265008845] [2025-02-08 01:56:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:56:45,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:56:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:56:45,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:56:45,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:56:45,027 INFO L87 Difference]: Start difference. First operand 452 states and 670 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2025-02-08 01:56:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:56:47,337 INFO L93 Difference]: Finished difference Result 862 states and 1308 transitions. [2025-02-08 01:56:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:56:47,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 183 [2025-02-08 01:56:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:56:47,342 INFO L225 Difference]: With dead ends: 862 [2025-02-08 01:56:47,342 INFO L226 Difference]: Without dead ends: 458 [2025-02-08 01:56:47,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:56:47,345 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 48 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-08 01:56:47,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 2745 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-08 01:56:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2025-02-08 01:56:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 452. [2025-02-08 01:56:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 259 states have (on average 1.2355212355212355) internal successors, (320), 265 states have internal predecessors, (320), 162 states have call successors, (162), 28 states have call predecessors, (162), 29 states have return successors, (188), 159 states have call predecessors, (188), 158 states have call successors, (188) [2025-02-08 01:56:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 670 transitions. [2025-02-08 01:56:47,371 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 670 transitions. Word has length 183 [2025-02-08 01:56:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:56:47,372 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 670 transitions. [2025-02-08 01:56:47,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2025-02-08 01:56:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 670 transitions. [2025-02-08 01:56:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-02-08 01:56:47,374 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:56:47,374 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:56:47,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:56:47,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:47,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:56:47,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:56:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1208694447, now seen corresponding path program 1 times [2025-02-08 01:56:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:56:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983683692] [2025-02-08 01:56:47,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:56:51,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-02-08 01:56:51,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-02-08 01:56:51,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:51,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-08 01:56:52,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:56:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983683692] [2025-02-08 01:56:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983683692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:56:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086769769] [2025-02-08 01:56:52,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:56:52,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:56:52,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:56:52,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:56:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:56:57,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-02-08 01:56:57,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-02-08 01:56:57,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:56:57,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:56:57,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 4789 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:56:57,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:57:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-02-08 01:57:00,147 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:57:00,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086769769] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:57:00,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:57:00,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2025-02-08 01:57:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691411390] [2025-02-08 01:57:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:57:00,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:57:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:57:00,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:57:00,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:57:00,149 INFO L87 Difference]: Start difference. First operand 452 states and 670 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2025-02-08 01:57:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:57:05,865 INFO L93 Difference]: Finished difference Result 873 states and 1313 transitions. [2025-02-08 01:57:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:57:05,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 199 [2025-02-08 01:57:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:57:05,871 INFO L225 Difference]: With dead ends: 873 [2025-02-08 01:57:05,872 INFO L226 Difference]: Without dead ends: 469 [2025-02-08 01:57:05,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:57:05,876 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 83 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-02-08 01:57:05,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 3695 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-02-08 01:57:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-02-08 01:57:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 452. [2025-02-08 01:57:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 259 states have (on average 1.2355212355212355) internal successors, (320), 265 states have internal predecessors, (320), 162 states have call successors, (162), 28 states have call predecessors, (162), 29 states have return successors, (188), 159 states have call predecessors, (188), 158 states have call successors, (188) [2025-02-08 01:57:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 670 transitions. [2025-02-08 01:57:05,911 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 670 transitions. Word has length 199 [2025-02-08 01:57:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:57:05,912 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 670 transitions. [2025-02-08 01:57:05,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2025-02-08 01:57:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 670 transitions. [2025-02-08 01:57:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-02-08 01:57:05,913 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:57:05,914 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:57:05,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:57:06,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:57:06,114 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:57:06,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:57:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash -701397717, now seen corresponding path program 2 times [2025-02-08 01:57:06,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:57:06,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192661455] [2025-02-08 01:57:06,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:57:06,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:57:09,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 213 statements into 2 equivalence classes. [2025-02-08 01:57:10,357 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 213 of 213 statements. [2025-02-08 01:57:10,357 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:57:10,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:57:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2025-02-08 01:57:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:57:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192661455] [2025-02-08 01:57:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192661455] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:57:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974409015] [2025-02-08 01:57:13,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:57:13,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:57:13,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:57:13,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:57:13,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 01:57:18,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 213 statements into 2 equivalence classes.