./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.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_array_list_swap_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 f13d223fa70379f8cd684d69e06e46c80e83d85aad0c82c0b48e3125c1bca56a --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:30:23,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:30:23,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:30:23,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:30:23,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:30:23,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:30:23,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:30:23,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:30:23,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:30:23,978 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:30:23,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:30:23,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:30:23,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:30:23,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:30:23,980 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:30:23,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:30:23,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:30:23,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:30:23,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:30:23,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:30:23,981 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:30:23,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:30:23,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:30:23,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:30:23,982 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 -> f13d223fa70379f8cd684d69e06e46c80e83d85aad0c82c0b48e3125c1bca56a [2025-02-08 01:30:24,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:30:24,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:30:24,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:30:24,249 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:30:24,249 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:30:24,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.i [2025-02-08 01:30:25,384 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b7bed4c8/0f0620f803c34bcdba803ad7d904121d/FLAGd516e8e3a [2025-02-08 01:30:25,821 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:30:25,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.i [2025-02-08 01:30:25,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b7bed4c8/0f0620f803c34bcdba803ad7d904121d/FLAGd516e8e3a [2025-02-08 01:30:25,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8b7bed4c8/0f0620f803c34bcdba803ad7d904121d [2025-02-08 01:30:25,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:30:25,972 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:30:25,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:30:25,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:30:25,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:30:25,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:30:25" (1/1) ... [2025-02-08 01:30:25,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbc1ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:25, skipping insertion in model container [2025-02-08 01:30:25,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:30:25" (1/1) ... [2025-02-08 01:30:26,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:30:26,235 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_swap_harness_negated.i[4493,4506] [2025-02-08 01:30:26,242 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_swap_harness_negated.i[4553,4566] [2025-02-08 01:30:26,722 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,723 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,723 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,723 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,726 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,738 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,739 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,740 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,740 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,741 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,742 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,742 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:26,742 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,028 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,029 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,036 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,045 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:30:27,112 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:30:27,122 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_swap_harness_negated.i[4493,4506] [2025-02-08 01:30:27,123 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_swap_harness_negated.i[4553,4566] [2025-02-08 01:30:27,184 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,194 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,195 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,197 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,197 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,201 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,286 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,286 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,287 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,295 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:30:27,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7743-7754] [2025-02-08 01:30:27,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:30:27,468 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:30:27,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27 WrapperNode [2025-02-08 01:30:27,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:30:27,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:30:27,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:30:27,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:30:27,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,631 INFO L138 Inliner]: procedures = 680, calls = 1677, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 651 [2025-02-08 01:30:27,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:30:27,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:30:27,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:30:27,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:30:27,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,710 INFO L175 MemorySlicer]: Split 302 memory accesses to 7 slices as follows [238, 2, 6, 39, 5, 9, 3]. 79 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [6, 2, 5, 5, 2, 5, 1]. The 238 writes are split as follows [232, 0, 1, 3, 1, 0, 1]. [2025-02-08 01:30:27,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:30:27,784 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:30:27,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:30:27,786 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:30:27,787 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (1/1) ... [2025-02-08 01:30:27,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:30:27,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:30:27,816 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 01:30:27,819 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 01:30:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:30:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:30:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:30:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:30:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:30:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:30:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:30:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:30:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-02-08 01:30:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:30:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:30:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-02-08 01:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:30:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:30:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 01:30:28,129 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:30:28,131 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:30:28,184 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:30:28,204 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:30:28,234 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L267: havoc nondet_uint8_t_#t~nondet10#1;#t~ret681#1 := nondet_uint8_t_#res#1;havoc nondet_uint8_t_#t~nondet10#1;assume { :end_inline_nondet_uint8_t } true;call write~int#2(#t~ret681#1, ~dst#1.base, ~dst#1.offset + (if ~index~0#1 % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then ~index~0#1 % 18446744073709551616 % 18446744073709551616 else ~index~0#1 % 18446744073709551616 % 18446744073709551616 - 18446744073709551616), 1);havoc ~index~0#1;havoc #t~ret681#1; [2025-02-08 01:30:28,340 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-02-08 01:30:28,351 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:30:28,400 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3527: havoc #t~ret286; [2025-02-08 01:30:28,412 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7364: havoc #t~ret682.base, #t~ret682.offset; [2025-02-08 01:30:33,669 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2025-02-08 01:30:33,670 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:30:33,682 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:30:33,682 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:30:33,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:30:33 BoogieIcfgContainer [2025-02-08 01:30:33,683 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:30:33,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:30:33,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:30:33,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:30:33,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:30:25" (1/3) ... [2025-02-08 01:30:33,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b598e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:30:33, skipping insertion in model container [2025-02-08 01:30:33,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:30:27" (2/3) ... [2025-02-08 01:30:33,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b598e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:30:33, skipping insertion in model container [2025-02-08 01:30:33,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:30:33" (3/3) ... [2025-02-08 01:30:33,693 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness_negated.i [2025-02-08 01:30:33,704 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:30:33,705 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_swap_harness_negated.i that has 16 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-08 01:30:33,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:30:33,766 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;@7474af7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:30:33,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:30:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-02-08 01:30:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 01:30:33,778 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:30:33,778 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:30:33,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:30:33,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:30:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -309932848, now seen corresponding path program 1 times [2025-02-08 01:30:33,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:30:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675300333] [2025-02-08 01:30:33,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:30:38,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 01:30:38,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 01:30:38,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:30:38,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:30:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-08 01:30:39,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:30:39,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675300333] [2025-02-08 01:30:39,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675300333] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:30:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373394073] [2025-02-08 01:30:39,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:39,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:30:39,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:30:39,111 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 01:30:39,112 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 01:30:43,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 01:30:43,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 01:30:43,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:30:43,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:30:43,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:30:43,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:30:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-08 01:30:43,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:30:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373394073] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:30:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:30:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:30:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093430515] [2025-02-08 01:30:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:30:43,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:30:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:30:43,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:30:43,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:30:43,605 INFO L87 Difference]: Start difference. First operand has 173 states, 92 states have (on average 1.173913043478261) internal successors, (108), 96 states have internal predecessors, (108), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-08 01:30:43,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:30:43,637 INFO L93 Difference]: Finished difference Result 340 states and 496 transitions. [2025-02-08 01:30:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:30:43,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2025-02-08 01:30:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:30:43,644 INFO L225 Difference]: With dead ends: 340 [2025-02-08 01:30:43,645 INFO L226 Difference]: Without dead ends: 162 [2025-02-08 01:30:43,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 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 01:30:43,652 INFO L435 NwaCegarLoop]: 228 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, 228 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 01:30:43,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:30:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-02-08 01:30:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2025-02-08 01:30:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 89 states have internal predecessors, (99), 59 states have call successors, (59), 15 states have call predecessors, (59), 15 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-02-08 01:30:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2025-02-08 01:30:43,700 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 68 [2025-02-08 01:30:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:30:43,702 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2025-02-08 01:30:43,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-08 01:30:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2025-02-08 01:30:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 01:30:43,705 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:30:43,706 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:30:43,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:30:43,906 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 01:30:43,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:30:43,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:30:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1407442035, now seen corresponding path program 1 times [2025-02-08 01:30:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:30:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619611607] [2025-02-08 01:30:43,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:43,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:30:47,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 01:30:47,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 01:30:47,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:30:47,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:30:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-08 01:30:48,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:30:48,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619611607] [2025-02-08 01:30:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619611607] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:30:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058848723] [2025-02-08 01:30:48,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:48,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:30:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:30:48,672 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 01:30:48,673 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 01:30:52,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-08 01:30:53,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 01:30:53,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:30:53,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:30:53,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:30:53,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:30:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-08 01:30:53,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:30:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058848723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:30:53,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:30:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:30:53,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372525386] [2025-02-08 01:30:53,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:30:53,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:30:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:30:53,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:30:53,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:30:53,789 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-08 01:30:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:30:54,665 INFO L93 Difference]: Finished difference Result 290 states and 397 transitions. [2025-02-08 01:30:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:30:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2025-02-08 01:30:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:30:54,668 INFO L225 Difference]: With dead ends: 290 [2025-02-08 01:30:54,668 INFO L226 Difference]: Without dead ends: 164 [2025-02-08 01:30:54,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:30:54,670 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 34 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:30:54,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 702 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 01:30:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-02-08 01:30:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-02-08 01:30:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 91 states have internal predecessors, (100), 59 states have call successors, (59), 15 states have call predecessors, (59), 16 states have return successors, (65), 57 states have call predecessors, (65), 57 states have call successors, (65) [2025-02-08 01:30:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 224 transitions. [2025-02-08 01:30:54,695 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 224 transitions. Word has length 68 [2025-02-08 01:30:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:30:54,695 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 224 transitions. [2025-02-08 01:30:54,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-08 01:30:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 224 transitions. [2025-02-08 01:30:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-08 01:30:54,696 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:30:54,697 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:30:54,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:30:54,897 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 01:30:54,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:30:54,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:30:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1420811111, now seen corresponding path program 1 times [2025-02-08 01:30:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:30:54,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941910196] [2025-02-08 01:30:54,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:54,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:30:58,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-08 01:30:58,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-08 01:30:58,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:30:58,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:30:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-08 01:30:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:30:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941910196] [2025-02-08 01:30:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941910196] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:30:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751294988] [2025-02-08 01:30:59,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:30:59,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:30:59,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:30:59,784 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 01:30:59,786 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 01:31:03,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-08 01:31:04,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-08 01:31:04,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:31:04,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:31:04,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 4145 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:31:04,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:31:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 01:31:05,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:31:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751294988] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:31:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:31:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-08 01:31:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541308382] [2025-02-08 01:31:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:31:05,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:31:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:31:05,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:31:05,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:31:05,097 INFO L87 Difference]: Start difference. First operand 164 states and 224 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-08 01:31:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:31:06,688 INFO L93 Difference]: Finished difference Result 301 states and 420 transitions. [2025-02-08 01:31:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:31:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 82 [2025-02-08 01:31:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:31:06,691 INFO L225 Difference]: With dead ends: 301 [2025-02-08 01:31:06,691 INFO L226 Difference]: Without dead ends: 176 [2025-02-08 01:31:06,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:31:06,692 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 44 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 01:31:06,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1071 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 01:31:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-02-08 01:31:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2025-02-08 01:31:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 97 states have internal predecessors, (107), 64 states have call successors, (64), 16 states have call predecessors, (64), 17 states have return successors, (70), 62 states have call predecessors, (70), 62 states have call successors, (70) [2025-02-08 01:31:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 241 transitions. [2025-02-08 01:31:06,709 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 241 transitions. Word has length 82 [2025-02-08 01:31:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:31:06,710 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 241 transitions. [2025-02-08 01:31:06,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-02-08 01:31:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 241 transitions. [2025-02-08 01:31:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-08 01:31:06,712 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:31:06,714 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:31:06,730 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 01:31:06,914 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 01:31:06,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:31:06,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:31:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -668321625, now seen corresponding path program 1 times [2025-02-08 01:31:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:31:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806281757] [2025-02-08 01:31:06,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:31:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:31:10,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-08 01:31:14,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 01:31:14,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:31:14,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:31:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-02-08 01:31:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:31:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806281757] [2025-02-08 01:31:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806281757] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:31:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289028798] [2025-02-08 01:31:19,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:31:19,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:31:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:31:19,731 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 01:31:19,732 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 01:31:23,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes.