./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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_array_list_erase_harness_negated.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 5aa4df3bf07993e90fd6085d301926d2fe237de2ffd3a09881087885f4330551 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:55:22,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:55:22,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 16:55:22,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:55:22,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:55:22,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:55:22,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:55:22,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:55:22,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:55:22,968 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:55:22,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:55:22,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:55:22,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:55:22,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:55:22,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:55:22,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:55:22,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:55:22,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:55:22,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:55:22,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:55:22,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:55:22,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:55:22,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:55:22,971 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 -> 5aa4df3bf07993e90fd6085d301926d2fe237de2ffd3a09881087885f4330551 [2025-01-09 16:55:23,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:55:23,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:55:23,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:55:23,172 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:55:23,173 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:55:23,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2025-01-09 16:55:24,296 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e35d234a/87a10a96ae234fc8aec37fcde4c94860/FLAG28e3be37e [2025-01-09 16:55:24,718 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:55:24,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2025-01-09 16:55:24,739 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e35d234a/87a10a96ae234fc8aec37fcde4c94860/FLAG28e3be37e [2025-01-09 16:55:24,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8e35d234a/87a10a96ae234fc8aec37fcde4c94860 [2025-01-09 16:55:24,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:55:24,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:55:24,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:55:24,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:55:24,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:55:24,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:55:24" (1/1) ... [2025-01-09 16:55:24,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49abcc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:24, skipping insertion in model container [2025-01-09 16:55:24,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:55:24" (1/1) ... [2025-01-09 16:55:24,818 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:55:25,004 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_array_list_erase_harness_negated.i[4494,4507] [2025-01-09 16:55:25,011 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_array_list_erase_harness_negated.i[4554,4567] [2025-01-09 16:55:25,413 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,413 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,413 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,414 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,414 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,422 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,425 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,426 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,426 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,427 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,428 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,428 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,428 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,691 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,691 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,698 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,698 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,701 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,701 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,704 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,711 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,754 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,755 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:55:25,780 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:55:25,789 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_array_list_erase_harness_negated.i[4494,4507] [2025-01-09 16:55:25,793 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_array_list_erase_harness_negated.i[4554,4567] [2025-01-09 16:55:25,835 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,836 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,836 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,836 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,837 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,842 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,844 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,845 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,845 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,846 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,848 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,848 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,848 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,950 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,950 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,951 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,951 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,952 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,952 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,952 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,956 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7793-7804] [2025-01-09 16:55:25,978 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,979 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:55:25,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:55:26,134 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:55:26,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26 WrapperNode [2025-01-09 16:55:26,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:55:26,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:55:26,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:55:26,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:55:26,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,249 INFO L138 Inliner]: procedures = 678, calls = 1677, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 734 [2025-01-09 16:55:26,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:55:26,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:55:26,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:55:26,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:55:26,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,320 INFO L175 MemorySlicer]: Split 331 memory accesses to 6 slices as follows [6, 238, 2, 73, 3, 9]. 72 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [0, 6, 2, 10, 1, 5]. The 243 writes are split as follows [2, 232, 0, 6, 1, 2]. [2025-01-09 16:55:26,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,356 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:55:26,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:55:26,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:55:26,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:55:26,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (1/1) ... [2025-01-09 16:55:26,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:55:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:55:26,405 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) [2025-01-09 16:55:26,411 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 [2025-01-09 16:55:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2025-01-09 16:55:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2025-01-09 16:55:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:55:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-01-09 16:55:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-01-09 16:55:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-01-09 16:55:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 16:55:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-01-09 16:55:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 16:55:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:55:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint8_t [2025-01-09 16:55:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint8_t [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:55:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-01-09 16:55:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-01-09 16:55:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-01-09 16:55:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-01-09 16:55:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-01-09 16:55:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:55:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:55:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2025-01-09 16:55:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-01-09 16:55:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-01-09 16:55:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:55:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 16:55:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 16:55:26,697 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:55:26,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:55:32,886 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2025-01-09 16:55:32,886 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:55:32,896 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:55:32,896 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:55:32,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:55:32 BoogieIcfgContainer [2025-01-09 16:55:32,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:55:32,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:55:32,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:55:32,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:55:32,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:55:24" (1/3) ... [2025-01-09 16:55:32,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e589839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:55:32, skipping insertion in model container [2025-01-09 16:55:32,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:55:26" (2/3) ... [2025-01-09 16:55:32,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e589839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:55:32, skipping insertion in model container [2025-01-09 16:55:32,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:55:32" (3/3) ... [2025-01-09 16:55:32,904 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_erase_harness_negated.i [2025-01-09 16:55:32,917 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:55:32,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_erase_harness_negated.i that has 21 procedures, 254 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 16:55:32,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:55:32,977 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;@27fed5f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:55:32,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 16:55:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 144 states have (on average 1.1875) internal successors, (171), 145 states have internal predecessors, (171), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-01-09 16:55:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 16:55:32,986 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:32,986 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:55:32,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:32,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 939077441, now seen corresponding path program 1 times [2025-01-09 16:55:32,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:32,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836523884] [2025-01-09 16:55:32,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:37,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 16:55:37,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 16:55:37,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:37,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-01-09 16:55:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836523884] [2025-01-09 16:55:38,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836523884] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:55:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676607810] [2025-01-09 16:55:38,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:55:38,046 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) [2025-01-09 16:55:38,049 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 [2025-01-09 16:55:42,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 16:55:42,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 16:55:42,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:42,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:42,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 4127 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 16:55:42,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:55:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-01-09 16:55:42,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:55:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676607810] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:42,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:55:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 16:55:42,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585295292] [2025-01-09 16:55:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:42,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:55:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:42,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:55:42,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:55:42,613 INFO L87 Difference]: Start difference. First operand has 254 states, 144 states have (on average 1.1875) internal successors, (171), 145 states have internal predecessors, (171), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 16:55:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:42,646 INFO L93 Difference]: Finished difference Result 499 states and 739 transitions. [2025-01-09 16:55:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:55:42,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2025-01-09 16:55:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:42,657 INFO L225 Difference]: With dead ends: 499 [2025-01-09 16:55:42,658 INFO L226 Difference]: Without dead ends: 249 [2025-01-09 16:55:42,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:55:42,667 INFO L435 NwaCegarLoop]: 345 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, 345 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 [2025-01-09 16:55:42,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:55:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-01-09 16:55:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2025-01-09 16:55:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 141 states have internal predecessors, (165), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2025-01-09 16:55:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 340 transitions. [2025-01-09 16:55:42,735 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 340 transitions. Word has length 87 [2025-01-09 16:55:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:42,737 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 340 transitions. [2025-01-09 16:55:42,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-01-09 16:55:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 340 transitions. [2025-01-09 16:55:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 16:55:42,742 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:42,742 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:55:42,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:55:42,945 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 [2025-01-09 16:55:42,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:42,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1387993283, now seen corresponding path program 1 times [2025-01-09 16:55:42,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:42,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535587504] [2025-01-09 16:55:42,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:46,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-01-09 16:55:46,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 16:55:46,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:46,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-01-09 16:55:49,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:49,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535587504] [2025-01-09 16:55:49,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535587504] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:49,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:55:49,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:55:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595587888] [2025-01-09 16:55:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:49,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:55:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:49,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:55:49,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:55:49,356 INFO L87 Difference]: Start difference. First operand 249 states and 340 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2025-01-09 16:55:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:49,882 INFO L93 Difference]: Finished difference Result 259 states and 367 transitions. [2025-01-09 16:55:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:55:49,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2025-01-09 16:55:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:49,887 INFO L225 Difference]: With dead ends: 259 [2025-01-09 16:55:49,887 INFO L226 Difference]: Without dead ends: 257 [2025-01-09 16:55:49,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:55:49,891 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 3 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:49,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1661 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 16:55:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-01-09 16:55:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2025-01-09 16:55:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 144 states have (on average 1.1736111111111112) internal successors, (169), 146 states have internal predecessors, (169), 89 states have call successors, (89), 21 states have call predecessors, (89), 22 states have return successors, (106), 88 states have call predecessors, (106), 88 states have call successors, (106) [2025-01-09 16:55:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2025-01-09 16:55:49,934 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 87 [2025-01-09 16:55:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:49,936 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2025-01-09 16:55:49,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2025-01-09 16:55:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2025-01-09 16:55:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-01-09 16:55:49,937 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:49,938 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:55:49,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:55:49,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:49,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:49,938 INFO L85 PathProgramCache]: Analyzing trace with hash 481193347, now seen corresponding path program 1 times [2025-01-09 16:55:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273545368] [2025-01-09 16:55:49,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:49,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:53,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-01-09 16:55:53,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-01-09 16:55:53,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:53,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-01-09 16:55:56,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273545368] [2025-01-09 16:55:56,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273545368] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:55:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540468296] [2025-01-09 16:55:56,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:56,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:55:56,193 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) [2025-01-09 16:55:56,194 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 [2025-01-09 16:56:00,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-01-09 16:56:01,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-01-09 16:56:01,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:56:01,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:56:01,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 4260 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:56:01,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:56:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 16:56:03,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:56:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540468296] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:56:03,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:56:03,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2025-01-09 16:56:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139597519] [2025-01-09 16:56:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:56:03,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:56:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:56:03,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:56:03,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:56:03,527 INFO L87 Difference]: Start difference. First operand 256 states and 364 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 16:56:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:56:11,076 INFO L93 Difference]: Finished difference Result 485 states and 699 transitions. [2025-01-09 16:56:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:56:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 102 [2025-01-09 16:56:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:56:11,080 INFO L225 Difference]: With dead ends: 485 [2025-01-09 16:56:11,080 INFO L226 Difference]: Without dead ends: 268 [2025-01-09 16:56:11,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2025-01-09 16:56:11,081 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 415 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:56:11,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1702 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2025-01-09 16:56:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2025-01-09 16:56:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2025-01-09 16:56:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 152 states have internal predecessors, (176), 94 states have call successors, (94), 22 states have call predecessors, (94), 23 states have return successors, (106), 93 states have call predecessors, (106), 93 states have call successors, (106) [2025-01-09 16:56:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 376 transitions. [2025-01-09 16:56:11,111 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 376 transitions. Word has length 102 [2025-01-09 16:56:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:56:11,111 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 376 transitions. [2025-01-09 16:56:11,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 16:56:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 376 transitions. [2025-01-09 16:56:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-01-09 16:56:11,112 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:56:11,113 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 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] [2025-01-09 16:56:11,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:56:11,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:56:11,317 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:56:11,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:56:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2005621105, now seen corresponding path program 1 times [2025-01-09 16:56:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:56:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435724350] [2025-01-09 16:56:11,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:56:15,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-01-09 16:56:15,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-01-09 16:56:15,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:56:15,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:56:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 16:56:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:56:16,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435724350] [2025-01-09 16:56:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435724350] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:56:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:56:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:56:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791485257] [2025-01-09 16:56:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:56:16,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:56:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:56:16,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:56:16,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:56:16,640 INFO L87 Difference]: Start difference. First operand 268 states and 376 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 16:56:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:56:17,181 INFO L93 Difference]: Finished difference Result 274 states and 381 transitions. [2025-01-09 16:56:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:56:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 102 [2025-01-09 16:56:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:56:17,184 INFO L225 Difference]: With dead ends: 274 [2025-01-09 16:56:17,184 INFO L226 Difference]: Without dead ends: 272 [2025-01-09 16:56:17,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:56:17,185 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 3 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 16:56:17,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1667 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 16:56:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-01-09 16:56:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2025-01-09 16:56:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 153 states have (on average 1.1699346405228759) internal successors, (179), 155 states have internal predecessors, (179), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (106), 93 states have call predecessors, (106), 93 states have call successors, (106) [2025-01-09 16:56:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 379 transitions. [2025-01-09 16:56:17,197 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 379 transitions. Word has length 102 [2025-01-09 16:56:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:56:17,198 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 379 transitions. [2025-01-09 16:56:17,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 16:56:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 379 transitions. [2025-01-09 16:56:17,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-01-09 16:56:17,199 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:56:17,199 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:56:17,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:56:17,199 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:56:17,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:56:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1718147793, now seen corresponding path program 1 times [2025-01-09 16:56:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:56:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641522269] [2025-01-09 16:56:17,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:56:20,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-01-09 16:56:20,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-01-09 16:56:20,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:56:20,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:56:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-01-09 16:56:21,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:56:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641522269] [2025-01-09 16:56:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641522269] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:56:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:56:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:56:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194161724] [2025-01-09 16:56:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:56:21,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:56:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:56:21,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:56:21,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:56:21,753 INFO L87 Difference]: Start difference. First operand 272 states and 379 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:56:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:56:21,948 INFO L93 Difference]: Finished difference Result 321 states and 437 transitions. [2025-01-09 16:56:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:56:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 116 [2025-01-09 16:56:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:56:21,951 INFO L225 Difference]: With dead ends: 321 [2025-01-09 16:56:21,952 INFO L226 Difference]: Without dead ends: 274 [2025-01-09 16:56:21,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:56:21,953 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 0 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:56:21,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1677 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 16:56:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2025-01-09 16:56:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2025-01-09 16:56:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 155 states have (on average 1.167741935483871) internal successors, (181), 157 states have internal predecessors, (181), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (106), 93 states have call predecessors, (106), 93 states have call successors, (106) [2025-01-09 16:56:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 381 transitions. [2025-01-09 16:56:21,972 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 381 transitions. Word has length 116 [2025-01-09 16:56:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:56:21,973 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 381 transitions. [2025-01-09 16:56:21,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-01-09 16:56:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 381 transitions. [2025-01-09 16:56:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 16:56:21,976 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:56:21,976 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:56:21,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:56:21,976 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:56:21,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:56:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1913127112, now seen corresponding path program 1 times [2025-01-09 16:56:21,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:56:21,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428058571] [2025-01-09 16:56:21,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:21,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:56:25,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 16:56:25,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 16:56:25,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:56:25,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:56:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-01-09 16:56:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:56:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428058571] [2025-01-09 16:56:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428058571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:56:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675773932] [2025-01-09 16:56:27,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:27,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:56:27,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:56:27,101 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) [2025-01-09 16:56:27,102 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 [2025-01-09 16:56:31,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes.