./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh --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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- 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-2329fc7 [2022-12-14 05:17:52,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:17:52,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:17:52,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:17:52,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:17:52,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:17:52,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:17:52,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:17:52,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:17:52,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:17:52,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:17:52,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:17:52,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:17:52,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:17:52,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:17:52,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:17:52,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:17:52,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:17:52,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:17:52,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:17:52,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:17:52,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:17:52,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:17:52,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:17:52,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:17:52,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:17:52,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:17:52,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:17:52,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:17:52,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:17:52,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:17:52,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:17:52,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:17:52,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:17:52,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:17:52,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:17:52,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:17:52,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:17:52,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:17:52,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:17:52,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:17:52,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 05:17:53,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:17:53,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:17:53,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:17:53,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:17:53,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:17:53,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:17:53,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:17:53,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:17:53,012 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:17:53,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:17:53,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:17:53,012 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:17:53,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:17:53,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:17:53,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:17:53,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:17:53,014 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:17:53,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:17:53,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:17:53,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:17:53,015 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_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2022-12-14 05:17:53,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:17:53,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:17:53,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:17:53,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:17:53,215 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:17:53,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-12-14 05:17:55,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:17:56,093 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:17:56,093 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-12-14 05:17:56,117 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/data/613af650d/5dc894f0b9634a68aa607d1c262475e0/FLAG1f3129634 [2022-12-14 05:17:56,130 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/data/613af650d/5dc894f0b9634a68aa607d1c262475e0 [2022-12-14 05:17:56,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:17:56,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:17:56,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:17:56,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:17:56,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:17:56,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:17:56" (1/1) ... [2022-12-14 05:17:56,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da50db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:56, skipping insertion in model container [2022-12-14 05:17:56,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:17:56" (1/1) ... [2022-12-14 05:17:56,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:17:56,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:17:56,436 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_67e17680-5198-4429-b110-9dcf12522fd4/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-12-14 05:17:56,442 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_67e17680-5198-4429-b110-9dcf12522fd4/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-12-14 05:17:57,051 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,052 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,053 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,054 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,055 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,069 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,070 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,072 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,072 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,135 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,136 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,137 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,142 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 05:17:57,144 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 05:17:57,144 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 05:17:57,354 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 05:17:57,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 05:17:57,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 05:17:57,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 05:17:57,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 05:17:57,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 05:17:57,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 05:17:57,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 05:17:57,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 05:17:57,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 05:17:57,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 05:17:57,484 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 05:17:57,516 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 05:17:57,527 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:17:57,553 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:17:57,560 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,561 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,618 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:17:57,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:17:57,662 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:17:57,671 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_67e17680-5198-4429-b110-9dcf12522fd4/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-12-14 05:17:57,672 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_67e17680-5198-4429-b110-9dcf12522fd4/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-12-14 05:17:57,693 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,693 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,693 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,694 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,694 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,698 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,698 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,703 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,703 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,704 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 05:17:57,706 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 05:17:57,707 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 05:17:57,707 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 05:17:57,719 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 05:17:57,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 05:17:57,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 05:17:57,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 05:17:57,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 05:17:57,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 05:17:57,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 05:17:57,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 05:17:57,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 05:17:57,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 05:17:57,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 05:17:57,736 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 05:17:57,749 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 05:17:57,753 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:17:57,764 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:17:57,768 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,768 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 05:17:57,785 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:17:57,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:17:57,945 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:17:57,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57 WrapperNode [2022-12-14 05:17:57,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:17:57,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:17:57,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:17:57,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:17:57,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,061 INFO L138 Inliner]: procedures = 690, calls = 2614, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2022-12-14 05:17:58,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:17:58,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:17:58,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:17:58,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:17:58,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,117 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:17:58,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:17:58,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:17:58,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:17:58,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (1/1) ... [2022-12-14 05:17:58,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:17:58,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:17:58,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:17:58,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:17:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 05:17:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 05:17:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:17:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 05:17:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:17:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:17:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 05:17:58,192 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:17:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 05:17:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:17:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2022-12-14 05:17:58,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2022-12-14 05:17:58,401 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:17:58,403 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:17:59,304 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:17:59,434 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:17:59,434 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:17:59,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:17:59 BoogieIcfgContainer [2022-12-14 05:17:59,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:17:59,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:17:59,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:17:59,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:17:59,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:17:56" (1/3) ... [2022-12-14 05:17:59,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0dc3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:17:59, skipping insertion in model container [2022-12-14 05:17:59,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:17:57" (2/3) ... [2022-12-14 05:17:59,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0dc3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:17:59, skipping insertion in model container [2022-12-14 05:17:59,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:17:59" (3/3) ... [2022-12-14 05:17:59,445 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2022-12-14 05:17:59,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:17:59,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:17:59,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:17:59,517 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;@4afc4259, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:17:59,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:17:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-14 05:17:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:17:59,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:59,529 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:17:59,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash 542316544, now seen corresponding path program 1 times [2022-12-14 05:17:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:59,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659627332] [2022-12-14 05:17:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:18:05,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659627332] [2022-12-14 05:18:05,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659627332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:18:05,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:18:05,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 05:18:05,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956501854] [2022-12-14 05:18:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:18:05,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:18:05,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:18:05,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:18:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:18:05,892 INFO L87 Difference]: Start difference. First operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:18:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:18:06,564 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2022-12-14 05:18:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 05:18:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2022-12-14 05:18:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:18:06,575 INFO L225 Difference]: With dead ends: 89 [2022-12-14 05:18:06,575 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 05:18:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:18:06,581 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 25 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:18:06,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 393 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:18:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 05:18:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-12-14 05:18:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 05:18:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-12-14 05:18:06,617 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2022-12-14 05:18:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:18:06,617 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-12-14 05:18:06,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 05:18:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-12-14 05:18:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 05:18:06,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:06,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:18:06,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:18:06,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:18:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1013013087, now seen corresponding path program 1 times [2022-12-14 05:18:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986497602] [2022-12-14 05:18:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:06,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:18:12,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:12,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986497602] [2022-12-14 05:18:12,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986497602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:18:12,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388144130] [2022-12-14 05:18:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:12,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:18:12,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:18:12,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:18:12,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e17680-5198-4429-b110-9dcf12522fd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:18:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:13,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-14 05:18:13,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:18:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-12-14 05:18:13,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 05:18:13,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:18:13,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-12-14 05:18:19,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:18:19,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 501 treesize of output 613 [2022-12-14 05:18:19,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:18:19,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 84 case distinctions, treesize of input 445 treesize of output 629 [2022-12-14 05:18:20,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 05:18:20,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 293 treesize of output 397