./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:42:14,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:14,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:14,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:14,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:14,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:14,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:14,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:14,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:14,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:14,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:14,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:14,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:14,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:14,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:14,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:14,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:14,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:14,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:14,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:14,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:14,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:14,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:14,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:14,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:14,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:14,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:14,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:14,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:14,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:14,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:14,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:14,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:14,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:14,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:14,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:14,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:14,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:14,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:14,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:14,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:14,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:42:14,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:14,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:14,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:14,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:14,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:14,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:14,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:14,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:14,582 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:14,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:42:14,582 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:14,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:14,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:42:14,583 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:42:14,583 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:14,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:42:14,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:42:14,601 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:42:14,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:14,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:42:14,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:14,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:42:14,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:14,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:42:14,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:42:14,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:14,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:42:14,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:14,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:14,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:14,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:14,609 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:42:14,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:14,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:42:14,609 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:42:14,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:42:14,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:42:14,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:14,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2022-11-19 06:42:14,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:15,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:15,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:15,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:15,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:15,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-11-19 06:42:15,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/data/7132cf99d/d542d5ca37514cdc989409fc70df5798/FLAG48e295448 [2022-11-19 06:42:16,013 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:16,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-11-19 06:42:16,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/data/7132cf99d/d542d5ca37514cdc989409fc70df5798/FLAG48e295448 [2022-11-19 06:42:16,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/data/7132cf99d/d542d5ca37514cdc989409fc70df5798 [2022-11-19 06:42:16,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:16,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:16,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:16,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:16,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:16,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:16" (1/1) ... [2022-11-19 06:42:16,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458a9578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:16, skipping insertion in model container [2022-11-19 06:42:16,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:16" (1/1) ... [2022-11-19 06:42:16,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:16,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:16,864 WARN L234 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-11-19 06:42:16,873 WARN L234 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-11-19 06:42:17,987 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:17,988 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:17,995 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:17,996 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:17,997 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,024 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,025 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,029 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,030 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:42:18,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:42:18,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:42:18,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:42:18,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:42:18,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:42:18,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:42:18,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:42:18,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:42:18,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:42:18,725 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:42:18,895 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:18,896 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:19,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:19,121 WARN L234 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-11-19 06:42:19,122 WARN L234 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_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-11-19 06:42:19,173 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,173 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,174 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,174 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,175 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,185 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,185 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,187 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,187 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:42:19,233 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:42:19,234 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:42:19,235 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:42:19,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:42:19,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:42:19,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:42:19,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:42:19,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:42:19,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:42:19,268 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:42:19,337 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,337 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:42:19,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:19,793 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:19,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19 WrapperNode [2022-11-19 06:42:19,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:19,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:19,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:19,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:19,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:19,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:19,993 INFO L138 Inliner]: procedures = 691, calls = 2642, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 858 [2022-11-19 06:42:19,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:19,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:19,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:19,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:20,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:20,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:20,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:20,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:20,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (1/1) ... [2022-11-19 06:42:20,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:20,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:20,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:20,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-19 06:42:20,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-19 06:42:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 06:42:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 06:42:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:42:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 06:42:20,266 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 06:42:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2022-11-19 06:42:20,266 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2022-11-19 06:42:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:42:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-19 06:42:20,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-19 06:42:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:42:20,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:42:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:42:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:42:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:42:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-19 06:42:20,268 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-19 06:42:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:20,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 06:42:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 06:42:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:42:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:42:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-19 06:42:20,271 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-19 06:42:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:42:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:42:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:42:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 06:42:20,272 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 06:42:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-19 06:42:20,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-19 06:42:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 06:42:20,273 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 06:42:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:42:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:42:20,708 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:20,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:22,404 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:22,901 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:22,901 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:42:22,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:22 BoogieIcfgContainer [2022-11-19 06:42:22,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:22,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:22,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:22,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:16" (1/3) ... [2022-11-19 06:42:22,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5cf664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:22, skipping insertion in model container [2022-11-19 06:42:22,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:19" (2/3) ... [2022-11-19 06:42:22,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5cf664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:22, skipping insertion in model container [2022-11-19 06:42:22,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:22" (3/3) ... [2022-11-19 06:42:22,919 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2022-11-19 06:42:22,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:22,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:42:23,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:23,032 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@324d4e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:23,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:42:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-19 06:42:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:42:23,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:23,050 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:23,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash -963794593, now seen corresponding path program 1 times [2022-11-19 06:42:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:23,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069864477] [2022-11-19 06:42:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-19 06:42:32,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:32,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069864477] [2022-11-19 06:42:32,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069864477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:32,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:32,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:42:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819810562] [2022-11-19 06:42:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:42:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:42:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:42:32,952 INFO L87 Difference]: Start difference. First operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:42:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:37,059 INFO L93 Difference]: Finished difference Result 219 states and 306 transitions. [2022-11-19 06:42:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:42:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 63 [2022-11-19 06:42:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:37,074 INFO L225 Difference]: With dead ends: 219 [2022-11-19 06:42:37,074 INFO L226 Difference]: Without dead ends: 137 [2022-11-19 06:42:37,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-19 06:42:37,083 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 73 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:37,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1214 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 06:42:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-19 06:42:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2022-11-19 06:42:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 63 states have (on average 1.126984126984127) internal successors, (71), 64 states have internal predecessors, (71), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-19 06:42:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2022-11-19 06:42:37,176 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 63 [2022-11-19 06:42:37,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:37,178 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2022-11-19 06:42:37,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:42:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2022-11-19 06:42:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 06:42:37,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:37,184 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-19 06:42:37,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:42:37,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1705387433, now seen corresponding path program 1 times [2022-11-19 06:42:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:37,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101875350] [2022-11-19 06:42:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-19 06:42:45,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:45,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101875350] [2022-11-19 06:42:45,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101875350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:45,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:45,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 06:42:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671236483] [2022-11-19 06:42:45,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 06:42:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 06:42:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:42:45,696 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-19 06:42:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:49,751 INFO L93 Difference]: Finished difference Result 233 states and 314 transitions. [2022-11-19 06:42:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:42:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 65 [2022-11-19 06:42:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:49,755 INFO L225 Difference]: With dead ends: 233 [2022-11-19 06:42:49,756 INFO L226 Difference]: Without dead ends: 175 [2022-11-19 06:42:49,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:42:49,759 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 70 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:49,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1181 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 06:42:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-19 06:42:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 148. [2022-11-19 06:42:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 75 states have internal predecessors, (82), 59 states have call successors, (59), 15 states have call predecessors, (59), 15 states have return successors, (59), 57 states have call predecessors, (59), 58 states have call successors, (59) [2022-11-19 06:42:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 200 transitions. [2022-11-19 06:42:49,821 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 200 transitions. Word has length 65 [2022-11-19 06:42:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:49,823 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 200 transitions. [2022-11-19 06:42:49,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-19 06:42:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 200 transitions. [2022-11-19 06:42:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:42:49,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:49,827 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-19 06:42:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:42:49,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:42:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1110960330, now seen corresponding path program 1 times [2022-11-19 06:42:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310509895] [2022-11-19 06:42:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 06:43:05,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:05,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310509895] [2022-11-19 06:43:05,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310509895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:43:05,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512166191] [2022-11-19 06:43:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:05,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:05,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:43:05,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84c7fbeb-b284-46b7-b0ce-6a9bb168f6f3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:43:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:06,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-19 06:43:06,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:06,989 INFO L350 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 13 treesize of output 9 [2022-11-19 06:43:06,998 INFO L350 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 6 treesize of output 5 [2022-11-19 06:43:07,004 INFO L350 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 13 treesize of output 9 [2022-11-19 06:43:13,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:43:13,093 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 06:43:13,093 INFO L350 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 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 06:43:13,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:43:13,126 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 06:43:13,126 INFO L350 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 1 case distinctions, treesize of input 24 treesize of output 27 [2022-11-19 06:43:13,169 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:43:13,169 INFO L350 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-19 06:43:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:13,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 23 treesize of output 13 [2022-11-19 06:43:23,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:23,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 209 treesize of output 173 [2022-11-19 06:43:23,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:23,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 143 [2022-11-19 06:43:23,121 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-19 06:43:23,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 69 [2022-11-19 06:43:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:43:23,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:26,999 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-19 06:52:54,878 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.