./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh --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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:27:31,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:27:31,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:27:31,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:27:31,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:27:31,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:27:31,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:27:31,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:27:31,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:27:31,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:27:31,631 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:27:31,631 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:27:31,632 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:27:31,632 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:27:31,633 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:27:31,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:27:31,634 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:27:31,634 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:27:31,635 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:27:31,636 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:27:31,636 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:27:31,637 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:27:31,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:27:31,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:27:31,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:27:31,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:27:31,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:27:31,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:27:31,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:27:31,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:27:31,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:27:31,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:27:31,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:27:31,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:27:31,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:27:31,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:27:31,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:27:31,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:27:31,643 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:27:31,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:27:31,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:27:31,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:27:31,644 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:27:31,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:27:31,645 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_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2023-12-02 12:27:31,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:27:31,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:27:31,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:27:31,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:27:31,914 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:27:31,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-12-02 12:27:34,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:27:35,035 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:27:35,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2023-12-02 12:27:35,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/data/aa75db31b/d7a9348bfc464c45a8afddcbd20830a9/FLAG8f2a9a575 [2023-12-02 12:27:35,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/data/aa75db31b/d7a9348bfc464c45a8afddcbd20830a9 [2023-12-02 12:27:35,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:27:35,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:27:35,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:27:35,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:27:35,093 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:27:35,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:27:35" (1/1) ... [2023-12-02 12:27:35,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c8fbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:35, skipping insertion in model container [2023-12-02 12:27:35,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:27:35" (1/1) ... [2023-12-02 12:27:35,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:27:35,492 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_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2023-12-02 12:27:35,501 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_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2023-12-02 12:27:36,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:36,970 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:27:36,971 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:27:36,972 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:27:36,973 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:27:36,974 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:27:36,975 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:27:36,976 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:27:36,976 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:27:36,977 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:27:36,978 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:27:37,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,245 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,315 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:27:37,429 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:27:37,443 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_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2023-12-02 12:27:37,444 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_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2023-12-02 12:27:37,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,526 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 12:27:37,527 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 12:27:37,528 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 12:27:37,529 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 12:27:37,530 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 12:27:37,530 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 12:27:37,531 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 12:27:37,531 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 12:27:37,532 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 12:27:37,532 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 12:27:37,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8297] [2023-12-02 12:27:37,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 12:27:37,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8783-8794] [2023-12-02 12:27:37,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:27:37,915 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,916 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,917 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,918 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,918 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,918 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:27:37,926 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:27:37,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37 WrapperNode [2023-12-02 12:27:37,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:27:37,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:27:37,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:27:37,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:27:37,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,092 INFO L138 Inliner]: procedures = 690, calls = 2649, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 958 [2023-12-02 12:27:38,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:27:38,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:27:38,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:27:38,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:27:38,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:27:38,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:27:38,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:27:38,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:27:38,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (1/1) ... [2023-12-02 12:27:38,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:27:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:27:38,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:27:38,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:27:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-12-02 12:27:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-12-02 12:27:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-12-02 12:27:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 12:27:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 12:27:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:27:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:27:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:27:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 12:27:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:27:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:27:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-12-02 12:27:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 12:27:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-12-02 12:27:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-12-02 12:27:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-12-02 12:27:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 12:27:38,253 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 12:27:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:27:38,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:27:38,483 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:27:38,486 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:27:39,659 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:27:39,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:27:39,962 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:27:39,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:27:39 BoogieIcfgContainer [2023-12-02 12:27:39,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:27:39,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:27:39,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:27:39,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:27:39,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:27:35" (1/3) ... [2023-12-02 12:27:39,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c740e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:27:39, skipping insertion in model container [2023-12-02 12:27:39,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:37" (2/3) ... [2023-12-02 12:27:39,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c740e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:27:39, skipping insertion in model container [2023-12-02 12:27:39,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:27:39" (3/3) ... [2023-12-02 12:27:39,972 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2023-12-02 12:27:39,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:27:39,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:27:40,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:27:40,051 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;@7e2a9668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:27:40,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:27:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 12:27:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 12:27:40,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:27:40,068 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2023-12-02 12:27:40,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:27:40,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:27:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1005803546, now seen corresponding path program 1 times [2023-12-02 12:27:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:27:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415100339] [2023-12-02 12:27:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:27:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:27:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 12:27:47,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:27:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415100339] [2023-12-02 12:27:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415100339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:27:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212156479] [2023-12-02 12:27:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:27:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:27:47,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:27:47,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:27:47,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c7f7b3-cb75-4d9b-b33e-ad62c9d17f5e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:27:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:27:48,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 2595 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 12:27:48,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:27:49,146 INFO L378 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 [2023-12-02 12:27:49,151 INFO L378 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 [2023-12-02 12:27:49,157 INFO L378 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 [2023-12-02 12:27:50,926 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 12:27:50,926 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 7 [2023-12-02 12:27:50,937 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 12:27:50,938 INFO L378 Elim1Store]: Elim1 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 15 treesize of output 7 [2023-12-02 12:27:52,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 12:27:52,214 INFO L378 Elim1Store]: Elim1 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 26 treesize of output 22 [2023-12-02 12:27:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 12:27:52,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:27:53,783 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 10832 disjunctions. This might take some time... [2023-12-02 12:28:02,424 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.