./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P --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 f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:51:42,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:51:42,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:51:42,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:51:42,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:51:42,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:51:42,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:51:42,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:51:42,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:51:42,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:51:42,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:51:42,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:51:42,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:51:42,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:51:42,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:51:42,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:51:42,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:51:42,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:51:42,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:51:42,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:51:42,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:51:42,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:51:42,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:51:42,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:51:42,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:51:42,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:51:42,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:51:42,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:51:42,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:51:42,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:51:42,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:51:42,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:51:42,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:51:42,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:51:42,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:51:42,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:51:42,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:51:42,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:51:42,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:51:42,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:51:42,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:51:42,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:51:42,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:51:42,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:51:42,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:51:42,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:51:42,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:51:42,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:51:42,906 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:51:42,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:51:42,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:51:42,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:51:42,907 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:51:42,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:51:42,908 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:51:42,908 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:51:42,908 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:51:42,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:51:42,909 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:51:42,909 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:51:42,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:51:42,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:51:42,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:51:42,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:51:42,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:51:42,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:51:42,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:51:42,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:51:42,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:51:42,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:51:42,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:51:42,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:51:42,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:51:42,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:51:42,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:51:42,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:51:42,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:51:42,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:51:42,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:51:42,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:51:42,914 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2021-11-20 23:51:43,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:51:43,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:51:43,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:51:43,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:51:43,320 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:51:43,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-20 23:51:43,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/data/2dc11bf7a/fe029e211f934cc1a75ec48bdbfb4772/FLAG475732970 [2021-11-20 23:51:44,462 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:51:44,463 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2021-11-20 23:51:44,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/data/2dc11bf7a/fe029e211f934cc1a75ec48bdbfb4772/FLAG475732970 [2021-11-20 23:51:44,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/data/2dc11bf7a/fe029e211f934cc1a75ec48bdbfb4772 [2021-11-20 23:51:44,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:51:44,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:51:44,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:51:44,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:51:44,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:51:44,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:44" (1/1) ... [2021-11-20 23:51:44,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212eac3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:44, skipping insertion in model container [2021-11-20 23:51:44,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:44" (1/1) ... [2021-11-20 23:51:44,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:51:45,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:51:45,393 WARN L230 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_7bdaca92-3663-462d-8c9a-39cd90ad439f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-20 23:51:45,403 WARN L230 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_7bdaca92-3663-462d-8c9a-39cd90ad439f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-20 23:51:46,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,793 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:46,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:47,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:51:47,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:51:47,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:51:47,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:51:47,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:51:47,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:51:47,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:51:47,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:51:47,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:51:47,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:51:47,540 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:51:47,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:47,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:47,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:51:47,933 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:51:47,960 WARN L230 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_7bdaca92-3663-462d-8c9a-39cd90ad439f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2021-11-20 23:51:47,969 WARN L230 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_7bdaca92-3663-462d-8c9a-39cd90ad439f/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2021-11-20 23:51:48,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,027 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,028 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:51:48,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:51:48,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:51:48,080 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:51:48,081 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:51:48,081 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:51:48,082 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:51:48,083 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:51:48,083 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:51:48,084 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:51:48,107 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:51:48,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,204 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:51:48,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:51:48,574 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:51:48,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48 WrapperNode [2021-11-20 23:51:48,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:51:48,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:51:48,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:51:48,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:51:48,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,889 INFO L137 Inliner]: procedures = 691, calls = 2629, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 863 [2021-11-20 23:51:48,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:51:48,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:51:48,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:51:48,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:51:48,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:48,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:49,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:49,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:49,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:51:49,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:51:49,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:51:49,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:51:49,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (1/1) ... [2021-11-20 23:51:49,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:51:49,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:51:49,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:51:49,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:51:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-20 23:51:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-20 23:51:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-20 23:51:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-20 23:51:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:51:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:51:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:51:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:51:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:51:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:51:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:51:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:51:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-20 23:51:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-20 23:51:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:51:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:51:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:51:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:51:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:51:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 23:51:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 23:51:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:51:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:51:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:51:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:51:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:51:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 23:51:49,177 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 23:51:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:51:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:51:49,607 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:51:49,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:51:51,337 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:51:51,539 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:51:51,539 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:51:51,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:51 BoogieIcfgContainer [2021-11-20 23:51:51,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:51:51,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:51:51,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:51:51,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:51:51,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:51:44" (1/3) ... [2021-11-20 23:51:51,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8e1d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:51, skipping insertion in model container [2021-11-20 23:51:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:48" (2/3) ... [2021-11-20 23:51:51,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8e1d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:51, skipping insertion in model container [2021-11-20 23:51:51,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:51" (3/3) ... [2021-11-20 23:51:51,553 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2021-11-20 23:51:51,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:51:51,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:51:51,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:51:51,649 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:51:51,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:51:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-20 23:51:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:51:51,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:51,697 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:51,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash -391814898, now seen corresponding path program 1 times [2021-11-20 23:51:51,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:51,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101523244] [2021-11-20 23:51:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:51,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-20 23:51:53,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:53,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101523244] [2021-11-20 23:51:53,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101523244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:53,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:53,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:51:53,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037128043] [2021-11-20 23:51:53,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:51:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:51:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:51:53,897 INFO L87 Difference]: Start difference. First operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-20 23:51:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:56,113 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2021-11-20 23:51:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:51:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 79 [2021-11-20 23:51:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:56,129 INFO L225 Difference]: With dead ends: 174 [2021-11-20 23:51:56,129 INFO L226 Difference]: Without dead ends: 128 [2021-11-20 23:51:56,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:51:56,137 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 107 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:56,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 971 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:51:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-20 23:51:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2021-11-20 23:51:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 59 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2021-11-20 23:51:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2021-11-20 23:51:56,216 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 79 [2021-11-20 23:51:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:56,218 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2021-11-20 23:51:56,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-20 23:51:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2021-11-20 23:51:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:51:56,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:56,224 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:56,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:51:56,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash -171307204, now seen corresponding path program 1 times [2021-11-20 23:51:56,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:56,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449378991] [2021-11-20 23:51:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:56,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-20 23:51:57,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:57,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449378991] [2021-11-20 23:51:57,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449378991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:51:57,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468408323] [2021-11-20 23:51:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:57,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:51:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:51:57,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:51:57,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:51:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:58,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-20 23:51:58,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:51:58,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 23:51:58,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 23:52:00,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2021-11-20 23:52:00,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-20 23:52:00,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-20 23:52:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 23:52:00,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:52:05,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-20 23:52:05,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-20 23:52:05,523 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-20 23:52:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:52:05,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468408323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:52:05,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [553197336] [2021-11-20 23:52:05,691 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-20 23:52:05,692 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:52:05,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:52:05,703 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:52:05,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:52:12,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:52:13,116 INFO L244 Elim1Store]: Index analysis took 477 ms [2021-11-20 23:52:31,679 WARN L227 SmtUtils]: Spent 18.46s on a formula simplification. DAG size of input: 1776 DAG size of output: 1185 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:52:31,686 INFO L354 Elim1Store]: treesize reduction 1970, result has 47.4 percent of original size [2021-11-20 23:52:31,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 198 select indices, 198 select index equivalence classes, 19505 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 197 case distinctions, treesize of input 997 treesize of output 2378 [2021-11-20 23:53:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:53:12,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:53:12,480 INFO L244 Elim1Store]: Index analysis took 771 ms [2021-11-20 23:53:51,236 WARN L227 SmtUtils]: Spent 38.66s on a formula simplification. DAG size of input: 2172 DAG size of output: 1185 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:53:51,242 INFO L354 Elim1Store]: treesize reduction 3546, result has 33.3 percent of original size [2021-11-20 23:53:51,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 200 select indices, 200 select index equivalence classes, 19703 disjoint index pairs (out of 19900 index pairs), introduced 200 new quantified variables, introduced 394 case distinctions, treesize of input 1007 treesize of output 2389 [2021-11-20 23:54:41,996 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 197 [2021-11-20 23:54:42,144 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 197 [2021-11-20 23:54:42,749 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 197 [2021-11-20 23:54:45,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:54:45,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:54:59,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 23:54:59,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2021-11-20 23:54:59,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:54:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:54:59,277 INFO L354 Elim1Store]: treesize reduction 55, result has 34.5 percent of original size [2021-11-20 23:54:59,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 47 [2021-11-20 23:54:59,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 23:55:06,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:55:07,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:55:08,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:55:08,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:55:08,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:55:09,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:55:10,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 23:55:10,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 23:55:11,333 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:55:11,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 102 [2021-11-20 23:55:11,377 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:55:11,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 98 [2021-11-20 23:55:39,115 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 197 [2021-11-20 23:55:39,527 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 197 [2021-11-20 23:55:39,655 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_eq_c_str with input of size 94 for LOIs [2021-11-20 23:55:47,683 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2021-11-20 23:55:48,600 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 109 for LOIs [2021-11-20 23:55:49,115 INFO L197 IcfgInterpreter]: Interpreting procedure save_byte_from_array with input of size 68 for LOIs [2021-11-20 23:55:50,404 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 64 for LOIs [2021-11-20 23:55:50,719 INFO L197 IcfgInterpreter]: Interpreting procedure aws_byte_cursor_is_valid with input of size 127 for LOIs [2021-11-20 23:55:52,431 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 81 for LOIs [2021-11-20 23:55:55,359 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2021-11-20 23:55:55,665 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:56:20,227 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:56:20,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:56:20,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 19] total 48 [2021-11-20 23:56:20,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027915978] [2021-11-20 23:56:20,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:56:20,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-20 23:56:20,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:56:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-20 23:56:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=8207, Unknown=0, NotChecked=0, Total=8742 [2021-11-20 23:56:20,237 INFO L87 Difference]: Start difference. First operand 102 states and 135 transitions. Second operand has 48 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 43 states have internal predecessors, (88), 28 states have call successors, (53), 9 states have call predecessors, (53), 15 states have return successors, (52), 23 states have call predecessors, (52), 27 states have call successors, (52) [2021-11-20 23:56:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:27,317 INFO L93 Difference]: Finished difference Result 247 states and 320 transitions. [2021-11-20 23:56:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 23:56:27,319 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 43 states have internal predecessors, (88), 28 states have call successors, (53), 9 states have call predecessors, (53), 15 states have return successors, (52), 23 states have call predecessors, (52), 27 states have call successors, (52) Word has length 80 [2021-11-20 23:56:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:27,323 INFO L225 Difference]: With dead ends: 247 [2021-11-20 23:56:27,324 INFO L226 Difference]: Without dead ends: 199 [2021-11-20 23:56:27,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 166 SyntacticMatches, 8 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=895, Invalid=14111, Unknown=0, NotChecked=0, Total=15006 [2021-11-20 23:56:27,333 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 276 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:27,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2745 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1868 Invalid, 0 Unknown, 712 Unchecked, 5.5s Time] [2021-11-20 23:56:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-20 23:56:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 180. [2021-11-20 23:56:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 101 states have (on average 1.188118811881188) internal successors, (120), 104 states have internal predecessors, (120), 54 states have call successors, (54), 23 states have call predecessors, (54), 24 states have return successors, (55), 52 states have call predecessors, (55), 52 states have call successors, (55) [2021-11-20 23:56:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 229 transitions. [2021-11-20 23:56:27,371 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 229 transitions. Word has length 80 [2021-11-20 23:56:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:27,372 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 229 transitions. [2021-11-20 23:56:27,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 43 states have internal predecessors, (88), 28 states have call successors, (53), 9 states have call predecessors, (53), 15 states have return successors, (52), 23 states have call predecessors, (52), 27 states have call successors, (52) [2021-11-20 23:56:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 229 transitions. [2021-11-20 23:56:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 23:56:27,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:27,378 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:27,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:56:27,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 23:56:27,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:56:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:27,607 INFO L85 PathProgramCache]: Analyzing trace with hash 921291334, now seen corresponding path program 1 times [2021-11-20 23:56:27,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:56:27,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885788958] [2021-11-20 23:56:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:27,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:56:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-20 23:56:29,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:56:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885788958] [2021-11-20 23:56:29,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885788958] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:56:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391133180] [2021-11-20 23:56:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:29,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:56:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:56:29,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:56:29,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdaca92-3663-462d-8c9a-39cd90ad439f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:56:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:30,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-20 23:56:30,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:31,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 23:56:31,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-20 23:56:33,923 WARN L860 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_DerPreprocessor_1 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| (let ((.cse0 (+ |c_save_byte_from_array_#in~storage#1.offset| 8))) (store (store (select |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_DerPreprocessor_1) .cse0 (select (select |c_#memory_$Pointer$.offset| |save_byte_from_array_~storage#1.base|) .cse0)))))) is different from true [2021-11-20 23:56:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:33,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:33,962 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-20 23:56:33,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-11-20 23:56:46,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:56:46,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 77 [2021-11-20 23:56:46,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:56:46,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 73 [2021-11-20 23:56:46,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:56:46,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2021-11-20 23:56:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 2 not checked. [2021-11-20 23:56:47,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:48,281 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-20 23:57:01,970 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.