./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_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_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91 --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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:14:19,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:20,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:14:20,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:20,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:20,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:20,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:20,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:20,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:20,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:20,071 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:20,071 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:20,072 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:20,073 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:14:20,074 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:20,074 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:20,074 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:14:20,075 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:14:20,075 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:20,076 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:14:20,076 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:14:20,077 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:14:20,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:20,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:20,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:14:20,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:20,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:20,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:20,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:20,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:20,082 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:20,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:20,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:20,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:20,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:20,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:20,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:20,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:20,084 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:14:20,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:14:20,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:20,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:20,085 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:20,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:20,086 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_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2023-11-24 23:14:20,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:20,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:20,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:20,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:20,461 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:20,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-24 23:14:23,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:24,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:24,225 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-24 23:14:24,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/data/7a0f3a3dc/bbf56a6cb11a42b6807ee719f86725a1/FLAG144347250 [2023-11-24 23:14:24,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/data/7a0f3a3dc/bbf56a6cb11a42b6807ee719f86725a1 [2023-11-24 23:14:24,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:24,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:24,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:24,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:24,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:24,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:24" (1/1) ... [2023-11-24 23:14:24,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b6f3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:24, skipping insertion in model container [2023-11-24 23:14:24,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:24" (1/1) ... [2023-11-24 23:14:24,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:24,755 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_b197a688-a5f7-4d03-941a-35a280cbd8fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-24 23:14:24,766 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_b197a688-a5f7-4d03-941a-35a280cbd8fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-24 23:14:25,894 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,896 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,899 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:25,923 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:26,513 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:14:26,515 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:14:26,516 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:14:26,518 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:14:26,521 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:14:26,522 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:14:26,523 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:14:26,524 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:14:26,525 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:14:26,526 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:14:27,002 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:27,179 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:27,210 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_b197a688-a5f7-4d03-941a-35a280cbd8fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-24 23:14:27,211 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_b197a688-a5f7-4d03-941a-35a280cbd8fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-24 23:14:27,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,275 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,283 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,284 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,329 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:14:27,330 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:14:27,331 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:14:27,332 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:14:27,333 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:14:27,333 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:14:27,334 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:14:27,334 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:14:27,335 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:14:27,335 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:14:27,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-24 23:14:27,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:14:27,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-24 23:14:27,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:27,902 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,902 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,903 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,903 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,904 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,904 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,905 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,905 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,905 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,906 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,906 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,907 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,907 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,908 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,908 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,908 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,908 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,908 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:14:27,917 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:27,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27 WrapperNode [2023-11-24 23:14:27,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:27,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:27,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:27,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:27,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,217 INFO L138 Inliner]: procedures = 689, calls = 2618, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2023-11-24 23:14:28,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:28,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:28,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:28,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:28,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:28,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:28,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:28,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:28,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (1/1) ... [2023-11-24 23:14:28,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:28,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:28,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:28,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:14:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:14:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:14:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:14:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:14:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:14:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:14:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:14:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:14:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:14:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:14:28,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:14:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:14:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:14:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:14:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:14:28,492 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:14:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:14:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:14:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2023-11-24 23:14:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2023-11-24 23:14:28,821 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:28,824 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:30,189 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:30,474 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:30,475 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:14:30,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:30 BoogieIcfgContainer [2023-11-24 23:14:30,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:30,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:30,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:30,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:30,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:24" (1/3) ... [2023-11-24 23:14:30,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78553fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:30, skipping insertion in model container [2023-11-24 23:14:30,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:27" (2/3) ... [2023-11-24 23:14:30,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78553fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:30, skipping insertion in model container [2023-11-24 23:14:30,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:30" (3/3) ... [2023-11-24 23:14:30,486 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2023-11-24 23:14:30,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:30,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:14:30,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:30,598 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;@64b3ab7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:30,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:14:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:14:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:14:30,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:30,614 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:30,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:14:30,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 838076422, now seen corresponding path program 1 times [2023-11-24 23:14:30,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:30,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936150843] [2023-11-24 23:14:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:43,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:43,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936150843] [2023-11-24 23:14:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936150843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:43,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 23:14:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182602291] [2023-11-24 23:14:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:14:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:14:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:14:43,236 INFO L87 Difference]: Start difference. First operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:14:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:43,959 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2023-11-24 23:14:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:14:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2023-11-24 23:14:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:43,974 INFO L225 Difference]: With dead ends: 89 [2023-11-24 23:14:43,974 INFO L226 Difference]: Without dead ends: 49 [2023-11-24 23:14:43,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:14:43,990 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:43,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 442 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:14:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-24 23:14:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-24 23:14:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-24 23:14:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-11-24 23:14:44,060 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2023-11-24 23:14:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:44,062 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-11-24 23:14:44,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:14:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-11-24 23:14:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:14:44,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:44,067 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:14:44,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:44,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:14:44,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1414866566, now seen corresponding path program 1 times [2023-11-24 23:14:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815257377] [2023-11-24 23:14:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:56,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815257377] [2023-11-24 23:14:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815257377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:14:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487397791] [2023-11-24 23:14:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:56,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:56,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:56,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b197a688-a5f7-4d03-941a-35a280cbd8fc/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:14:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:57,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-24 23:14:57,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:57,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 60 treesize of output 55 [2023-11-24 23:14:57,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 65 [2023-11-24 23:14:58,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 110 [2023-11-24 23:14:58,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 23 [2023-11-24 23:14:58,154 INFO L378 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 25 treesize of output 11 [2023-11-24 23:14:58,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-11-24 23:14:58,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11