./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX --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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:51:30,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:51:30,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:51:30,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:51:30,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:51:30,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:51:30,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:51:30,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:51:30,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:51:30,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:51:30,442 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:51:30,443 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:51:30,443 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:51:30,445 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:51:30,446 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:51:30,446 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:51:30,447 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:51:30,447 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:51:30,448 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:51:30,448 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:51:30,449 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:51:30,449 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:51:30,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:51:30,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:51:30,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:51:30,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:51:30,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:51:30,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:51:30,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:51:30,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:51:30,475 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:51:30,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:51:30,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:51:30,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:30,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:51:30,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:51:30,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:51:30,477 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:51:30,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:51:30,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:51:30,477 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:51:30,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:51:30,478 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2023-11-12 00:51:30,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:51:30,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:51:30,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:51:30,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:51:30,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:51:30,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2023-11-12 00:51:33,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:51:34,572 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:51:34,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2023-11-12 00:51:34,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/data/def4663f5/2e5462f3ae614e4a84a02cd12450ab14/FLAGd2d0864e4 [2023-11-12 00:51:34,631 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/data/def4663f5/2e5462f3ae614e4a84a02cd12450ab14 [2023-11-12 00:51:34,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:51:34,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:51:34,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:34,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:51:34,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:51:34,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:34" (1/1) ... [2023-11-12 00:51:34,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb73871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:34, skipping insertion in model container [2023-11-12 00:51:34,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:34" (1/1) ... [2023-11-12 00:51:34,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:51:35,078 WARN L240 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_61dc26a9-a767-4628-ba95-3437db1367df/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2023-11-12 00:51:35,086 WARN L240 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_61dc26a9-a767-4628-ba95-3437db1367df/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2023-11-12 00:51:35,985 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:35,986 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:35,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:35,988 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:35,989 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,005 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,006 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,009 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,009 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,448 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:51:36,450 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:51:36,451 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:51:36,452 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:51:36,454 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:51:36,455 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:51:36,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:51:36,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:51:36,458 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:51:36,458 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:51:36,786 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,787 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:36,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:36,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:51:37,008 WARN L240 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_61dc26a9-a767-4628-ba95-3437db1367df/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2023-11-12 00:51:37,009 WARN L240 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_61dc26a9-a767-4628-ba95-3437db1367df/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2023-11-12 00:51:37,089 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,090 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,091 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,091 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,092 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,110 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,110 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,112 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,113 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,171 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:51:37,172 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:51:37,174 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:51:37,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:51:37,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:51:37,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:51:37,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:51:37,181 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:51:37,181 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:51:37,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:51:37,290 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-12 00:51:37,291 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,293 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:37,306 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-12 00:51:37,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:37,584 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,584 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,585 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,586 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,587 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,587 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,587 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,587 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:37,595 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:51:37,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37 WrapperNode [2023-11-12 00:51:37,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:37,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:37,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:51:37,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:51:37,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,844 INFO L138 Inliner]: procedures = 690, calls = 2646, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 857 [2023-11-12 00:51:37,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:37,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:51:37,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:51:37,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:51:37,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:37,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:38,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:38,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:38,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:51:38,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:51:38,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:51:38,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:51:38,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (1/1) ... [2023-11-12 00:51:38,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:38,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:51:38,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:51:38,124 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-12 00:51:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-12 00:51:38,125 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-12 00:51:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-12 00:51:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:51:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:51:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:51:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2023-11-12 00:51:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2023-11-12 00:51:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:51:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:51:38,127 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:51:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:51:38,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:51:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:51:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:51:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:51:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:51:38,129 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:51:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:51:38,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:51:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:51:38,130 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:51:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:51:38,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:51:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:51:38,131 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:51:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:51:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:51:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:51:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:51:38,133 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:51:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-12 00:51:38,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-12 00:51:38,134 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:51:38,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:51:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:51:38,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:51:38,475 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:51:38,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:51:40,121 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:51:40,791 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:51:40,792 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:51:40,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:40 BoogieIcfgContainer [2023-11-12 00:51:40,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:51:40,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:51:40,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:51:40,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:51:40,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:51:34" (1/3) ... [2023-11-12 00:51:40,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27817a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:40, skipping insertion in model container [2023-11-12 00:51:40,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:37" (2/3) ... [2023-11-12 00:51:40,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27817a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:40, skipping insertion in model container [2023-11-12 00:51:40,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:40" (3/3) ... [2023-11-12 00:51:40,807 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2023-11-12 00:51:40,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:51:40,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:51:40,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:51:40,910 INFO L357 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, mHoare=true, 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;@1966e421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:51:40,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:51:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-12 00:51:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 00:51:40,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:40,928 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:51:40,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:40,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash 408760015, now seen corresponding path program 1 times [2023-11-12 00:51:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985436314] [2023-11-12 00:51:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-12 00:51:50,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:50,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985436314] [2023-11-12 00:51:50,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985436314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:51:50,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183115444] [2023-11-12 00:51:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:50,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:51:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:50,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:51:50,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61dc26a9-a767-4628-ba95-3437db1367df/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:51:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:51,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-12 00:51:51,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:51:51,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 00:51:51,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:51:51,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:51:55,171 INFO L351 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 17 treesize of output 9 [2023-11-12 00:51:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 00:51:55,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:51:56,769 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 11492 disjunctions. This might take some time... [2023-11-12 00:52:05,734 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.