./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:38,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:38,440 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:56:38,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:38,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:38,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:38,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:38,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:38,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:38,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:38,481 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:38,481 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:38,482 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:38,483 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:38,483 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:38,484 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:38,484 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:38,485 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:38,485 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:38,486 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:38,487 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:38,490 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:38,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:38,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:38,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:38,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:38,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:38,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:38,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:38,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:38,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:38,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:38,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:38,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:38,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:38,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:38,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:38,499 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:38,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:38,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:38,501 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:38,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:38,510 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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2023-11-12 00:56:38,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:38,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:38,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:38,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:38,788 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:38,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2023-11-12 00:56:41,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:42,682 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:42,683 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2023-11-12 00:56:42,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/data/cf174097a/15a6bba533ae42dab454ae22e8a7bf74/FLAG7b4a76694 [2023-11-12 00:56:42,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/data/cf174097a/15a6bba533ae42dab454ae22e8a7bf74 [2023-11-12 00:56:42,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:42,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:42,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:42,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:42,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:42,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:42" (1/1) ... [2023-11-12 00:56:42,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c23cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:42, skipping insertion in model container [2023-11-12 00:56:42,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:42" (1/1) ... [2023-11-12 00:56:42,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:43,197 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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2023-11-12 00:56:43,208 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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2023-11-12 00:56:44,302 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,303 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,304 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,306 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,307 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,329 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,330 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:44,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:56:44,804 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:56:44,806 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:56:44,812 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:56:44,817 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:56:44,821 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:56:44,822 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:56:44,824 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:56:44,825 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:56:44,828 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:56:45,180 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,181 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:45,307 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:45,319 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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2023-11-12 00:56:45,320 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_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2023-11-12 00:56:45,358 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,358 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,359 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,360 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,361 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,368 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,368 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,370 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,370 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,406 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:56:45,407 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:56:45,408 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:56:45,409 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:56:45,411 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:56:45,411 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:56:45,412 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:56:45,413 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:56:45,413 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:56:45,414 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:56:45,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-12 00:56:45,579 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,581 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:56:45,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-12 00:56:45,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:45,961 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,961 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,961 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,962 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,962 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,962 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,963 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,963 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,963 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,963 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,964 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,965 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,965 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,965 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,965 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,966 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,967 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,967 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:45,975 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:45,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45 WrapperNode [2023-11-12 00:56:45,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:45,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:45,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:45,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:45,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,231 INFO L138 Inliner]: procedures = 690, calls = 2669, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2023-11-12 00:56:46,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:46,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:46,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:46,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:46,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:46,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:46,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:46,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:46,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (1/1) ... [2023-11-12 00:56:46,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:46,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:46,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-12 00:56:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-12 00:56:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:56:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:56:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:56:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:56:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:56:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:56:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:56:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-12 00:56:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-12 00:56:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:56:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 00:56:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 00:56:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:56:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:56:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-12 00:56:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-12 00:56:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:56:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:56:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:56:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-12 00:56:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-12 00:56:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:56:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:56:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:56:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:56:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:56:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-12 00:56:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-12 00:56:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:56:46,493 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-12 00:56:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-12 00:56:46,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:46,808 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:46,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:48,463 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:48,817 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:48,817 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:56:48,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:48 BoogieIcfgContainer [2023-11-12 00:56:48,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:48,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:48,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:48,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:48,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:42" (1/3) ... [2023-11-12 00:56:48,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797c96b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:48, skipping insertion in model container [2023-11-12 00:56:48,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:45" (2/3) ... [2023-11-12 00:56:48,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797c96b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:48, skipping insertion in model container [2023-11-12 00:56:48,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:48" (3/3) ... [2023-11-12 00:56:48,832 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2023-11-12 00:56:48,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:48,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:56:48,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:48,937 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;@72aee574, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:48,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:56:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-12 00:56:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:56:48,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:48,957 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:48,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:56:48,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash -311969516, now seen corresponding path program 1 times [2023-11-12 00:56:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141122779] [2023-11-12 00:56:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-12 00:57:16,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141122779] [2023-11-12 00:57:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141122779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:57:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895144180] [2023-11-12 00:57:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:16,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:16,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:16,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:57:16,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6f5a1a-a65e-4791-ab76-7bbf97826eae/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:57:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:17,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 143 conjunts are in the unsatisfiable core [2023-11-12 00:57:17,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:17,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-11-12 00:57:18,305 INFO L351 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 19 treesize of output 1 [2023-11-12 00:57:19,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-11-12 00:57:19,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 [2023-11-12 00:57:19,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 26 [2023-11-12 00:57:19,480 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-11-12 00:57:19,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-12 00:57:19,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-12 00:57:19,843 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 8 treesize of output 4