./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_string_bytes_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 05:24:14,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 05:24:14,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-06 05:24:14,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 05:24:14,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 05:24:14,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 05:24:14,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 05:24:14,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 05:24:14,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 05:24:14,458 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 05:24:14,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 05:24:14,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 05:24:14,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 05:24:14,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 05:24:14,459 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 05:24:14,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:24:14,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 05:24:14,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 05:24:14,460 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 -> 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e [2025-02-06 05:24:14,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 05:24:14,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 05:24:14,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 05:24:14,697 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 05:24:14,697 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 05:24:14,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-02-06 05:24:15,909 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa4200db4/67e9a0e3414e41879e976238bfe26ac5/FLAGd49d5783b [2025-02-06 05:24:16,384 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 05:24:16,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-02-06 05:24:16,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa4200db4/67e9a0e3414e41879e976238bfe26ac5/FLAGd49d5783b [2025-02-06 05:24:16,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aa4200db4/67e9a0e3414e41879e976238bfe26ac5 [2025-02-06 05:24:16,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 05:24:16,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 05:24:16,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 05:24:16,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 05:24:16,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 05:24:16,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:24:16" (1/1) ... [2025-02-06 05:24:16,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283424c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:16, skipping insertion in model container [2025-02-06 05:24:16,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:24:16" (1/1) ... [2025-02-06 05:24:16,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 05:24:16,680 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_string_bytes_harness.i[4490,4503] [2025-02-06 05:24:16,689 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_string_bytes_harness.i[4550,4563] [2025-02-06 05:24:17,101 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,105 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,105 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,105 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,106 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,121 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,123 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,125 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,127 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,130 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,131 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,132 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,421 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_string_bytes_harness.i[147449,147462] [2025-02-06 05:24:17,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:24:17,432 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 05:24:17,441 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_string_bytes_harness.i[4490,4503] [2025-02-06 05:24:17,441 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_string_bytes_harness.i[4550,4563] [2025-02-06 05:24:17,477 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,478 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,478 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,479 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,481 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,491 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,492 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,492 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,493 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,494 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,494 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,497 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,498 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:24:17,565 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_string_bytes_harness.i[147449,147462] [2025-02-06 05:24:17,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:24:17,678 INFO L204 MainTranslator]: Completed translation [2025-02-06 05:24:17,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17 WrapperNode [2025-02-06 05:24:17,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 05:24:17,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 05:24:17,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 05:24:17,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 05:24:17,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,755 INFO L138 Inliner]: procedures = 668, calls = 972, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 61 [2025-02-06 05:24:17,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 05:24:17,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 05:24:17,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 05:24:17,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 05:24:17,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,779 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 6, 5]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 3 writes are split as follows [0, 3, 0]. [2025-02-06 05:24:17,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,786 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 05:24:17,791 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 05:24:17,791 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 05:24:17,791 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 05:24:17,792 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (1/1) ... [2025-02-06 05:24:17,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:24:17,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:24:17,813 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) [2025-02-06 05:24:17,815 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 [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-02-06 05:24:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-06 05:24:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 05:24:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-06 05:24:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 05:24:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 05:24:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 05:24:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 05:24:18,016 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 05:24:18,018 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 05:24:18,045 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: havoc #t~malloc583.base, #t~malloc583.offset; [2025-02-06 05:24:18,055 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-06 05:24:18,085 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6305: havoc #t~mem498;havoc #t~short499;havoc #t~mem500;havoc #t~mem501;havoc #t~short502; [2025-02-06 05:24:18,087 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-06 05:24:18,148 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6862: havoc ensure_string_is_allocated_bounded_length_#t~ret569#1.base, ensure_string_is_allocated_bounded_length_#t~ret569#1.offset; [2025-02-06 05:24:18,149 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6854: havoc ensure_string_is_allocated_nondet_length_#t~ret567#1.base, ensure_string_is_allocated_nondet_length_#t~ret567#1.offset; [2025-02-06 05:24:18,164 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-02-06 05:24:18,164 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 05:24:18,170 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 05:24:18,170 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 05:24:18,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:24:18 BoogieIcfgContainer [2025-02-06 05:24:18,170 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 05:24:18,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 05:24:18,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 05:24:18,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 05:24:18,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:24:16" (1/3) ... [2025-02-06 05:24:18,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615aec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:24:18, skipping insertion in model container [2025-02-06 05:24:18,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:24:17" (2/3) ... [2025-02-06 05:24:18,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615aec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:24:18, skipping insertion in model container [2025-02-06 05:24:18,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:24:18" (3/3) ... [2025-02-06 05:24:18,175 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_bytes_harness.i [2025-02-06 05:24:18,184 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 05:24:18,185 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_bytes_harness.i that has 9 procedures, 63 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 05:24:18,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 05:24:18,222 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;@2cfc9810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 05:24:18,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 05:24:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-06 05:24:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 05:24:18,229 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:24:18,229 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2025-02-06 05:24:18,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:24:18,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:24:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1798088701, now seen corresponding path program 1 times [2025-02-06 05:24:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:24:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324770067] [2025-02-06 05:24:18,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:24:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:24:18,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 05:24:18,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 05:24:18,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:24:18,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:24:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 05:24:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:24:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324770067] [2025-02-06 05:24:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324770067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:24:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31987720] [2025-02-06 05:24:18,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:24:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:24:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:24:18,460 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) [2025-02-06 05:24:18,461 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 [2025-02-06 05:24:18,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 05:24:18,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 05:24:18,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:24:18,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:24:18,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 05:24:18,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:24:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 05:24:18,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 05:24:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31987720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:24:18,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 05:24:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 05:24:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477190569] [2025-02-06 05:24:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:24:18,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 05:24:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:24:18,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 05:24:18,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:24:18,667 INFO L87 Difference]: Start difference. First operand has 63 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-06 05:24:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:24:18,679 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2025-02-06 05:24:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 05:24:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2025-02-06 05:24:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:24:18,684 INFO L225 Difference]: With dead ends: 118 [2025-02-06 05:24:18,684 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 05:24:18,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:24:18,687 INFO L435 NwaCegarLoop]: 69 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, 69 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 [2025-02-06 05:24:18,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:24:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 05:24:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-02-06 05:24:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 05:24:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2025-02-06 05:24:18,709 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 55 [2025-02-06 05:24:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:24:18,709 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2025-02-06 05:24:18,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-06 05:24:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2025-02-06 05:24:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 05:24:18,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:24:18,711 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2025-02-06 05:24:18,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 05:24:18,912 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 [2025-02-06 05:24:18,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:24:18,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:24:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2051031898, now seen corresponding path program 1 times [2025-02-06 05:24:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:24:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393948349] [2025-02-06 05:24:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:24:18,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:24:18,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 05:24:18,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 05:24:18,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:24:18,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:24:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:24:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:24:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393948349] [2025-02-06 05:24:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393948349] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:24:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:24:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-06 05:24:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788079450] [2025-02-06 05:24:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:24:19,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 05:24:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:24:19,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 05:24:19,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-02-06 05:24:19,647 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-06 05:24:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:24:19,789 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2025-02-06 05:24:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 05:24:19,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 55 [2025-02-06 05:24:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:24:19,790 INFO L225 Difference]: With dead ends: 64 [2025-02-06 05:24:19,790 INFO L226 Difference]: Without dead ends: 60 [2025-02-06 05:24:19,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2025-02-06 05:24:19,791 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:24:19,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 672 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:24:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-06 05:24:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-06 05:24:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 05:24:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2025-02-06 05:24:19,798 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2025-02-06 05:24:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:24:19,798 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2025-02-06 05:24:19,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-06 05:24:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2025-02-06 05:24:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 05:24:19,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:24:19,800 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:24:19,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 05:24:19,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:24:19,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:24:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1423287623, now seen corresponding path program 1 times [2025-02-06 05:24:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:24:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469112897] [2025-02-06 05:24:19,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:24:19,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:24:19,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 05:24:19,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 05:24:19,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:24:19,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:24:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 05:24:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:24:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469112897] [2025-02-06 05:24:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469112897] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:24:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174473863] [2025-02-06 05:24:22,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:24:22,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:24:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:24:22,399 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) [2025-02-06 05:24:22,403 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 [2025-02-06 05:24:22,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 05:24:22,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 05:24:22,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:24:22,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:24:22,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-02-06 05:24:22,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:24:22,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2025-02-06 05:24:22,894 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2025-02-06 05:24:22,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 92 [2025-02-06 05:24:22,970 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2025-02-06 05:24:22,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 52 [2025-02-06 05:25:43,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:25:43,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 563 treesize of output 547 [2025-02-06 05:25:44,156 INFO L349 Elim1Store]: treesize reduction 64, result has 28.1 percent of original size [2025-02-06 05:25:44,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 233 treesize of output 178 [2025-02-06 05:25:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 05:25:44,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:25:46,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2025-02-06 05:25:46,174 INFO L349 Elim1Store]: treesize reduction 26, result has 56.7 percent of original size [2025-02-06 05:25:46,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 98 [2025-02-06 05:25:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 05:25:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174473863] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:25:46,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:25:46,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 20] total 60 [2025-02-06 05:25:46,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293360540] [2025-02-06 05:25:46,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:25:46,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-02-06 05:25:46,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:25:46,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-02-06 05:25:46,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3318, Unknown=10, NotChecked=0, Total=3540 [2025-02-06 05:25:46,482 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 60 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 48 states have internal predecessors, (105), 18 states have call successors, (29), 5 states have call predecessors, (29), 12 states have return successors, (27), 20 states have call predecessors, (27), 15 states have call successors, (27) [2025-02-06 05:25:51,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 05:25:55,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]