./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:08:19,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:08:19,410 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:08:19,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:08:19,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:08:19,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:08:19,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:08:19,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:08:19,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:08:19,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:08:19,450 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:08:19,451 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:08:19,451 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:08:19,451 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:08:19,452 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:08:19,452 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:08:19,452 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:08:19,452 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:08:19,452 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:08:19,452 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:08:19,453 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:08:19,453 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:08:19,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:08:19,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:08:19,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:08:19,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:08:19,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:08:19,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:08:19,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:08:19,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:08:19,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:08:19,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:08:19,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:08:19,458 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2024-11-14 05:08:19,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:08:19,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:08:19,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:08:19,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:08:19,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:08:19,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i Unable to find full path for "g++" [2024-11-14 05:08:21,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:08:22,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:08:22,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2024-11-14 05:08:22,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/data/fefcf6f88/cfc0115f2cb0402da85bd52b40171e59/FLAGce3696d60 [2024-11-14 05:08:22,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/data/fefcf6f88/cfc0115f2cb0402da85bd52b40171e59 [2024-11-14 05:08:22,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:08:22,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:08:22,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:08:22,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:08:22,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:08:22,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:08:22" (1/1) ... [2024-11-14 05:08:22,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1da310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:22, skipping insertion in model container [2024-11-14 05:08:22,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:08:22" (1/1) ... [2024-11-14 05:08:22,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:08:23,061 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-14 05:08:23,069 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-14 05:08:24,294 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,295 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,295 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,296 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,298 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,314 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,315 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,317 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:24,317 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,368 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,369 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:08:25,594 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:08:25,612 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-14 05:08:25,616 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-14 05:08:25,687 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,689 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,689 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,691 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,692 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,699 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,700 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,701 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,703 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,905 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-14 05:08:25,907 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,907 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:08:25,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-14 05:08:25,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:08:26,275 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:08:26,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26 WrapperNode [2024-11-14 05:08:26,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:08:26,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:08:26,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:08:26,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:08:26,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,506 INFO L138 Inliner]: procedures = 682, calls = 2798, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 891 [2024-11-14 05:08:26,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:08:26,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:08:26,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:08:26,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:08:26,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:08:26,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:08:26,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:08:26,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:08:26,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (1/1) ... [2024-11-14 05:08:26,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:08:26,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:08:26,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:08:26,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:08:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-14 05:08:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-14 05:08:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-14 05:08:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-14 05:08:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-14 05:08:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:08:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:08:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:08:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-14 05:08:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 05:08:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:08:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-14 05:08:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-14 05:08:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-14 05:08:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:08:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:08:27,186 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:08:27,189 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:08:35,322 INFO L? ?]: Removed 108 outVars from TransFormulas that were not future-live. [2024-11-14 05:08:35,322 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:08:36,441 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:08:36,441 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 05:08:36,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:08:36 BoogieIcfgContainer [2024-11-14 05:08:36,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:08:36,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:08:36,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:08:36,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:08:36,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:08:22" (1/3) ... [2024-11-14 05:08:36,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa8511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:08:36, skipping insertion in model container [2024-11-14 05:08:36,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:26" (2/3) ... [2024-11-14 05:08:36,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa8511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:08:36, skipping insertion in model container [2024-11-14 05:08:36,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:08:36" (3/3) ... [2024-11-14 05:08:36,453 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2024-11-14 05:08:36,471 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:08:36,474 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_byte_buf_harness.i that has 11 procedures, 94 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 05:08:36,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:08:36,580 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=FINITE_AUTOMATA, 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;@107111a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:08:36,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:08:36,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-14 05:08:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:08:36,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:36,601 INFO L215 NwaCegarLoop]: trace histogram [5, 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] [2024-11-14 05:08:36,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:36,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 885523129, now seen corresponding path program 1 times [2024-11-14 05:08:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308932075] [2024-11-14 05:08:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:10:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:10:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 05:10:28,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:10:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308932075] [2024-11-14 05:10:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308932075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:10:28,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:10:28,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:10:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661309727] [2024-11-14 05:10:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:10:28,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:10:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:10:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:10:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:10:28,464 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:10:30,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:33,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:35,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:10:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:10:36,258 INFO L93 Difference]: Finished difference Result 157 states and 215 transitions. [2024-11-14 05:10:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:10:36,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2024-11-14 05:10:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:10:36,270 INFO L225 Difference]: With dead ends: 157 [2024-11-14 05:10:36,271 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:10:36,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:10:36,281 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 10 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:10:36,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 320 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2024-11-14 05:10:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:10:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-14 05:10:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-14 05:10:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2024-11-14 05:10:36,351 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2024-11-14 05:10:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:10:36,353 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2024-11-14 05:10:36,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 05:10:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2024-11-14 05:10:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 05:10:36,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:10:36,357 INFO L215 NwaCegarLoop]: trace histogram [5, 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] [2024-11-14 05:10:36,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:10:36,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:10:36,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:10:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1884871142, now seen corresponding path program 1 times [2024-11-14 05:10:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:10:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306632014] [2024-11-14 05:10:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:10:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:12:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:13:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 05:13:24,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:13:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306632014] [2024-11-14 05:13:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306632014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:13:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31588571] [2024-11-14 05:13:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:13:24,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:13:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:13:24,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:13:24,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11fe219-9c0d-454e-8c91-a9c0a113a5a1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:14:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:59,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 7633 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-14 05:14:59,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:00,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 05:15:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:15:28,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:33,656 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 8385 disjunctions. This might take some time... [2024-11-14 05:15:40,133 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 8385 disjunctions.