./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:32:38,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:32:38,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:32:38,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:32:38,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:32:38,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:32:38,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:32:38,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:32:38,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:32:38,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:32:38,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:32:38,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:32:38,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:32:38,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:32:38,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:32:38,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:32:38,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:32:38,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:32:38,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:32:38,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:32:38,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:32:38,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:32:38,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:32:38,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:32:38,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:32:38,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:32:38,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:32:38,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:32:38,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:32:38,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:32:38,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:32:38,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:32:38,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:32:38,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:32:38,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:32:38,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:32:38,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:32:38,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:32:38,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:32:38,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:32:38,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:32:38,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:32:38,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:32:38,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:32:38,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:32:38,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:32:38,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:32:38,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:32:38,725 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:32:38,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:32:38,725 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:32:38,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:32:38,726 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:32:38,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:32:38,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:32:38,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:32:38,726 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:32:38,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:32:38,727 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:32:38,727 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:32:38,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:32:38,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:32:38,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:32:38,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:32:38,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:32:38,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:32:38,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:32:38,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:32:38,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:32:38,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:32:38,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:32:38,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:38,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:32:38,730 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:32:38,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:32:38,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:32:38,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:32:38,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:32:38,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:32:38,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:32:38,732 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_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2022-11-25 23:32:39,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:32:39,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:32:39,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:32:39,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:32:39,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:32:39,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-11-25 23:32:42,122 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:32:42,681 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:32:42,681 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-11-25 23:32:42,734 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/data/02cadefcb/b2dd447e92da4d83a0481ff4671b2fb6/FLAG47fd3e681 [2022-11-25 23:32:42,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/data/02cadefcb/b2dd447e92da4d83a0481ff4671b2fb6 [2022-11-25 23:32:42,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:32:42,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:32:42,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:42,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:32:42,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:32:42,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:42" (1/1) ... [2022-11-25 23:32:42,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fdd278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:42, skipping insertion in model container [2022-11-25 23:32:42,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:42" (1/1) ... [2022-11-25 23:32:42,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:32:42,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:32:43,251 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_eb3cfcab-d4de-4004-accf-28ab762927fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-11-25 23:32:43,260 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_eb3cfcab-d4de-4004-accf-28ab762927fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-11-25 23:32:44,210 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,220 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,223 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,226 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,227 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,228 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,232 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,248 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,248 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,249 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,251 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,251 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,328 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:44,329 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:44,330 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:44,334 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:32:44,337 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:32:44,338 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:32:44,635 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:32:44,636 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:32:44,637 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:32:44,638 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:32:44,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:32:44,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:32:44,641 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:32:44,642 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:32:44,642 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:32:44,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:32:44,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:32:44,813 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:32:44,872 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,898 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,903 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:32:44,923 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:32:44,948 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,965 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,967 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,973 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:44,985 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:32:44,993 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,994 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:44,999 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,007 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,054 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:32:45,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:45,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:32:45,130 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_eb3cfcab-d4de-4004-accf-28ab762927fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-11-25 23:32:45,131 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_eb3cfcab-d4de-4004-accf-28ab762927fc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-11-25 23:32:45,162 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,164 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,164 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,165 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,165 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,166 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,167 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,172 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,173 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,173 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,174 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,175 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,182 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:45,182 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:45,183 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:32:45,186 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:32:45,188 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:32:45,188 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:32:45,208 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:32:45,209 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:32:45,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:32:45,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:32:45,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:32:45,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:32:45,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:32:45,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:32:45,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:32:45,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:32:45,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:32:45,250 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:32:45,265 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,274 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,277 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:32:45,283 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:32:45,294 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,299 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,299 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,300 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,308 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:32:45,322 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,322 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:32:45,327 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,333 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-25 23:32:45,363 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:32:45,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:45,591 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:32:45,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45 WrapperNode [2022-11-25 23:32:45,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:45,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:45,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:32:45,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:32:45,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,832 INFO L138 Inliner]: procedures = 691, calls = 2642, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 858 [2022-11-25 23:32:45,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:45,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:32:45,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:32:45,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:32:45,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,962 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:45,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:32:45,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:32:46,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:32:46,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:32:46,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (1/1) ... [2022-11-25 23:32:46,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:46,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:32:46,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:32:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-25 23:32:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-25 23:32:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-25 23:32:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-25 23:32:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:32:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:32:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:32:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2022-11-25 23:32:46,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2022-11-25 23:32:46,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:32:46,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 23:32:46,096 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 23:32:46,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:32:46,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:32:46,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:32:46,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:32:46,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:32:46,097 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-25 23:32:46,097 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-25 23:32:46,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:32:46,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:32:46,101 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:32:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:32:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:32:46,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:32:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-25 23:32:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-25 23:32:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:32:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:32:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:32:46,110 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 23:32:46,111 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 23:32:46,111 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-25 23:32:46,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-25 23:32:46,111 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 23:32:46,111 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 23:32:46,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:32:46,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:32:46,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:32:46,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:32:47,926 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:32:48,382 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:32:48,383 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:32:48,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:48 BoogieIcfgContainer [2022-11-25 23:32:48,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:32:48,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:32:48,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:32:48,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:32:48,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:32:42" (1/3) ... [2022-11-25 23:32:48,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a95988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:48, skipping insertion in model container [2022-11-25 23:32:48,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:45" (2/3) ... [2022-11-25 23:32:48,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a95988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:48, skipping insertion in model container [2022-11-25 23:32:48,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:48" (3/3) ... [2022-11-25 23:32:48,398 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2022-11-25 23:32:48,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:32:48,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:32:48,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:32:48,508 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;@4a979c26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:32:48,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:32:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 23:32:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:32:48,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:48,525 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:48,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -963794593, now seen corresponding path program 1 times [2022-11-25 23:32:48,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226341292] [2022-11-25 23:32:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 23:32:59,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:59,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226341292] [2022-11-25 23:32:59,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226341292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:59,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013646753] [2022-11-25 23:32:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:59,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:59,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3cfcab-d4de-4004-accf-28ab762927fc/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:33:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:33:00,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-25 23:33:00,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:33:00,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 23:33:00,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 23:33:03,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 23:33:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:33:04,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:33:06,112 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-25 23:33:23,492 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.