./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW --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 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- 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-4e7fbc6 [2022-11-23 15:10:08,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:10:08,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:10:08,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:10:08,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:10:08,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:10:08,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:10:08,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:10:08,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:10:08,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:10:08,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:10:08,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:10:08,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:10:08,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:10:08,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:10:08,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:10:08,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:10:08,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:10:08,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:10:08,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:10:08,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:10:08,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:10:08,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:10:08,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:10:08,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:10:08,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:10:08,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:10:08,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:10:08,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:10:08,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:10:08,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:10:08,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:10:08,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:10:08,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:10:08,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:10:08,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:10:08,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:10:08,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:10:08,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:10:08,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:10:08,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:10:08,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:10:08,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:10:08,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:10:08,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:10:08,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:10:08,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:10:08,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:10:08,765 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:10:08,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:10:08,765 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:10:08,766 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:10:08,767 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:10:08,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:10:08,767 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:10:08,767 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:10:08,767 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:10:08,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:10:08,768 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:10:08,768 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:10:08,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:10:08,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:10:08,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:10:08,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:10:08,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:10:08,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:10:08,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:10:08,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:10:08,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:10:08,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:10:08,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:10:08,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:08,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:10:08,772 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:10:08,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:10:08,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:10:08,773 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:10:08,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:10:08,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:10:08,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:10:08,774 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2022-11-23 15:10:09,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:10:09,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:10:09,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:10:09,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:10:09,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:10:09,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2022-11-23 15:10:12,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:10:12,840 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:10:12,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2022-11-23 15:10:12,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/data/345e1df6a/b2a7f02619b747c9862e4f14958bf88a/FLAG3ca8d2368 [2022-11-23 15:10:12,904 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/data/345e1df6a/b2a7f02619b747c9862e4f14958bf88a [2022-11-23 15:10:12,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:10:12,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:10:12,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:12,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:10:12,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:10:12,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:12" (1/1) ... [2022-11-23 15:10:12,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126a9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:12, skipping insertion in model container [2022-11-23 15:10:12,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:12" (1/1) ... [2022-11-23 15:10:12,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:10:13,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:10:13,390 WARN L237 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2022-11-23 15:10:13,400 WARN L237 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2022-11-23 15:10:14,463 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,464 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,465 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,466 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,467 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,482 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,483 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,485 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,486 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:14,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:10:14,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:10:14,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:10:14,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:10:14,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:10:14,956 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:10:14,957 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:10:14,957 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:10:14,958 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:10:14,959 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:10:15,118 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:10:15,207 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,207 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:15,391 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:10:15,420 WARN L237 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2022-11-23 15:10:15,421 WARN L237 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_7593cdd1-3645-414b-b7d6-da4a17cb2085/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2022-11-23 15:10:15,476 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,477 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,477 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,478 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,480 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,488 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,489 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,491 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,491 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:10:15,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:10:15,545 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:10:15,545 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:10:15,546 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:10:15,547 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:10:15,547 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:10:15,550 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:10:15,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:10:15,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:10:15,585 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:10:15,668 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,669 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:10:15,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:15,986 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:10:15,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15 WrapperNode [2022-11-23 15:10:15,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:15,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:15,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:10:15,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:10:15,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,200 INFO L138 Inliner]: procedures = 690, calls = 2608, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 776 [2022-11-23 15:10:16,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:16,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:10:16,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:10:16,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:10:16,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:10:16,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:10:16,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:10:16,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:10:16,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (1/1) ... [2022-11-23 15:10:16,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:16,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:10:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:10:16,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-23 15:10:16,402 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-23 15:10:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:10:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:10:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:10:16,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:10:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:10:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:10:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:10:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:10:16,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:10:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 15:10:16,404 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 15:10:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:10:16,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:10:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:10:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:10:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:10:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-23 15:10:16,405 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-23 15:10:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:10:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:10:16,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:10:16,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:10:18,014 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:10:18,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:10:18,272 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:10:18,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:18 BoogieIcfgContainer [2022-11-23 15:10:18,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:10:18,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:10:18,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:10:18,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:10:18,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:10:12" (1/3) ... [2022-11-23 15:10:18,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67e508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:18, skipping insertion in model container [2022-11-23 15:10:18,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:15" (2/3) ... [2022-11-23 15:10:18,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67e508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:18, skipping insertion in model container [2022-11-23 15:10:18,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:18" (3/3) ... [2022-11-23 15:10:18,289 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_array_harness.i [2022-11-23 15:10:18,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:10:18,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:10:18,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:10:18,384 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;@82030db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:10:18,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:10:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 15:10:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:10:18,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:18,401 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:18,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:18,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1726220798, now seen corresponding path program 1 times [2022-11-23 15:10:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:18,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183606748] [2022-11-23 15:10:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:10:24,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183606748] [2022-11-23 15:10:24,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183606748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:24,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:24,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 15:10:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106798072] [2022-11-23 15:10:24,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:24,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:10:24,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:10:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:10:24,430 INFO L87 Difference]: Start difference. First operand has 41 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:10:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:24,806 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-11-23 15:10:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:10:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2022-11-23 15:10:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:24,818 INFO L225 Difference]: With dead ends: 75 [2022-11-23 15:10:24,823 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 15:10:24,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:10:24,838 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:24,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 275 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:10:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 15:10:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-23 15:10:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 15:10:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-23 15:10:24,892 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2022-11-23 15:10:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:24,894 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-23 15:10:24,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:10:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-23 15:10:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 15:10:24,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:24,896 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] [2022-11-23 15:10:24,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:10:24,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1561058022, now seen corresponding path program 1 times [2022-11-23 15:10:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:24,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297837334] [2022-11-23 15:10:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:24,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:10:31,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:31,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297837334] [2022-11-23 15:10:31,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297837334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:31,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108981487] [2022-11-23 15:10:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:31,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:31,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7593cdd1-3645-414b-b7d6-da4a17cb2085/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:10:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:31,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 15:10:31,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:32,293 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 16 treesize of output 17 [2022-11-23 15:10:36,007 INFO L321 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2022-11-23 15:10:36,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 110 [2022-11-23 15:10:36,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2022-11-23 15:10:36,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-11-23 15:10:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:36,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:37,415 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-23 15:10:51,582 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.