./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:51:02,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:51:02,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:51:02,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:51:02,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:51:02,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:51:02,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:51:02,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:51:02,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:51:02,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:51:02,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:51:02,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:51:02,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:51:02,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:51:02,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:51:02,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:51:02,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:51:02,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:51:02,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:51:02,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:51:02,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:51:02,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:51:02,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:51:02,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:51:02,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:51:02,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:51:02,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:51:02,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:51:02,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:51:02,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:51:02,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:51:02,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:51:02,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:51:02,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:51:02,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:51:02,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:51:02,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:51:02,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:51:02,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:51:02,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:51:02,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:51:02,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:51:02,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:51:02,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:51:02,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:51:02,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:51:02,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:51:02,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:51:02,640 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:51:02,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:51:02,641 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:51:02,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:51:02,642 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:51:02,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:51:02,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:51:02,643 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:51:02,643 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:51:02,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:51:02,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:51:02,644 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:51:02,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:51:02,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:51:02,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:51:02,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:51:02,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:51:02,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:51:02,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:51:02,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:51:02,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:51:02,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:51:02,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:51:02,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:02,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:51:02,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:51:02,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:51:02,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:51:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:51:02,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:51:02,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:51:02,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:51:02,653 INFO L138 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_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-23 01:51:02,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:51:02,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:51:02,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:51:02,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:51:02,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:51:02,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-23 01:51:03,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/data/c92bffb03/9a58620ca5bf45ac9bc43cbafca7aaf2/FLAG2009d79e3 [2021-11-23 01:51:04,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:51:04,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-23 01:51:04,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/data/c92bffb03/9a58620ca5bf45ac9bc43cbafca7aaf2/FLAG2009d79e3 [2021-11-23 01:51:04,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/data/c92bffb03/9a58620ca5bf45ac9bc43cbafca7aaf2 [2021-11-23 01:51:04,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:51:04,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:51:04,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:04,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:51:04,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:51:04,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:04" (1/1) ... [2021-11-23 01:51:04,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccde48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:04, skipping insertion in model container [2021-11-23 01:51:04,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:04" (1/1) ... [2021-11-23 01:51:04,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:51:04,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:51:04,881 WARN L230 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_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-23 01:51:04,890 WARN L230 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_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-23 01:51:05,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:05,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:05,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:05,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:05,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:05,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:06,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:06,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:06,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:06,513 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 01:51:06,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 01:51:06,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 01:51:06,517 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 01:51:06,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 01:51:06,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 01:51:06,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 01:51:06,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 01:51:06,522 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 01:51:06,523 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 01:51:06,768 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 01:51:06,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:06,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:07,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:51:07,211 WARN L230 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_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-23 01:51:07,218 WARN L230 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_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-23 01:51:07,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,336 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 01:51:07,337 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 01:51:07,338 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 01:51:07,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 01:51:07,340 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 01:51:07,340 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 01:51:07,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 01:51:07,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 01:51:07,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 01:51:07,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 01:51:07,378 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 01:51:07,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 01:51:07,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:07,727 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:51:07,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07 WrapperNode [2021-11-23 01:51:07,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:07,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:07,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:51:07,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:51:07,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:07,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:07,985 INFO L137 Inliner]: procedures = 690, calls = 2637, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 871 [2021-11-23 01:51:07,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:07,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:51:07,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:51:07,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:51:07,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:07,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:51:08,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:51:08,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:51:08,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:51:08,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (1/1) ... [2021-11-23 01:51:08,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:08,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:51:08,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:51:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 01:51:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 01:51:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:51:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 01:51:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 01:51:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-23 01:51:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:51:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:51:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:51:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 01:51:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 01:51:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 01:51:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 01:51:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:51:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:51:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:51:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:51:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:51:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 01:51:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 01:51:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 01:51:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 01:51:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:51:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:51:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 01:51:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 01:51:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:51:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:51:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-23 01:51:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-23 01:51:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:51:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 01:51:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 01:51:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 01:51:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 01:51:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:51:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-23 01:51:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:51:08,530 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:51:08,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:51:10,103 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:51:10,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:51:10,294 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:51:10,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:10 BoogieIcfgContainer [2021-11-23 01:51:10,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:51:10,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:51:10,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:51:10,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:51:10,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:04" (1/3) ... [2021-11-23 01:51:10,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:10, skipping insertion in model container [2021-11-23 01:51:10,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:07" (2/3) ... [2021-11-23 01:51:10,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:10, skipping insertion in model container [2021-11-23 01:51:10,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:10" (3/3) ... [2021-11-23 01:51:10,310 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2021-11-23 01:51:10,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:51:10,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:51:10,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:51:10,438 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:51:10,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:51:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-23 01:51:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 01:51:10,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:10,474 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 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] [2021-11-23 01:51:10,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1678221370, now seen corresponding path program 1 times [2021-11-23 01:51:10,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266468933] [2021-11-23 01:51:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:10,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 01:51:14,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266468933] [2021-11-23 01:51:14,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266468933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:51:14,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882643791] [2021-11-23 01:51:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:14,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:51:14,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:14,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:51:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_684337ec-7e6e-454c-a0e1-cc71eaa8e38d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:51:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:14,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-23 01:51:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:15,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2021-11-23 01:51:15,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-11-23 01:51:23,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:51:23,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2021-11-23 01:51:23,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 01:51:23,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 102 [2021-11-23 01:51:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:51:23,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:25,964 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-23 02:04:20,105 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.