./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI --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 --- [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-5e519f3 [2022-11-03 03:27:12,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:27:12,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:27:12,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:27:12,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:27:12,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:27:12,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:27:12,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:27:12,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:27:12,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:27:12,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:27:12,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:27:12,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:27:12,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:27:12,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:27:12,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:27:12,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:27:12,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:27:12,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:27:12,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:27:12,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:27:12,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:27:12,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:27:12,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:27:12,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:27:12,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:27:12,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:27:12,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:27:12,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:27:12,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:27:12,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:27:12,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:27:12,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:27:12,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:27:12,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:27:12,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:27:12,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:27:12,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:27:12,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:27:12,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:27:12,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:27:12,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:27:12,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:27:12,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:27:12,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:27:12,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:27:12,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:27:12,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:27:12,820 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:27:12,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:27:12,821 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:27:12,821 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:27:12,821 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:27:12,822 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:27:12,822 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:27:12,822 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:27:12,823 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:27:12,823 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:27:12,823 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:27:12,824 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:27:12,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:27:12,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:27:12,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:27:12,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:27:12,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:27:12,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:27:12,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:27:12,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:27:12,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:27:12,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:27:12,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:27:12,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:12,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:27:12,829 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:27:12,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:27:12,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:27:12,830 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:27:12,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:27:12,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:27:12,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:27:12,831 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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2022-11-03 03:27:13,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:27:13,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:27:13,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:27:13,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:27:13,211 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:27:13,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-03 03:27:13,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/data/583c69ef5/51c5ca4e7bf9496ab55fad222d7a2d43/FLAG84a47a523 [2022-11-03 03:27:14,437 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:27:14,440 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-03 03:27:14,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/data/583c69ef5/51c5ca4e7bf9496ab55fad222d7a2d43/FLAG84a47a523 [2022-11-03 03:27:14,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/data/583c69ef5/51c5ca4e7bf9496ab55fad222d7a2d43 [2022-11-03 03:27:14,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:27:14,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:27:14,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:14,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:27:14,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:27:14,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:14" (1/1) ... [2022-11-03 03:27:14,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f19320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:14, skipping insertion in model container [2022-11-03 03:27:14,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:14" (1/1) ... [2022-11-03 03:27:14,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:27:14,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:27:15,268 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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-03 03:27:15,282 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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-03 03:27:16,629 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,630 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,631 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,632 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,634 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,651 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,652 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,655 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:16,656 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:17,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:27:17,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:27:17,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:27:17,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:27:17,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:27:17,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:27:17,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:27:17,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:27:17,251 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:27:17,252 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:27:17,482 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:27:17,685 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:17,699 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:17,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:17,979 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:27:18,028 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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-03 03:27:18,028 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_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-03 03:27:18,088 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,089 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,089 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,090 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,091 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,097 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,098 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,099 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,100 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:27:18,135 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:27:18,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:27:18,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:27:18,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:27:18,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:27:18,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:27:18,140 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:27:18,140 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:27:18,141 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:27:18,162 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:27:18,250 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,250 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:27:18,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:18,652 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:27:18,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18 WrapperNode [2022-11-03 03:27:18,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:18,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:18,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:27:18,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:27:18,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,876 INFO L138 Inliner]: procedures = 691, calls = 2629, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 863 [2022-11-03 03:27:18,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:18,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:27:18,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:27:18,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:27:18,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,989 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:18,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:19,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:27:19,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:27:19,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:27:19,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:27:19,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (1/1) ... [2022-11-03 03:27:19,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:19,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:27:19,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:27:19,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-11-03 03:27:19,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-11-03 03:27:19,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 03:27:19,148 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 03:27:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:27:19,148 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 03:27:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 03:27:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:27:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:27:19,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:27:19,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:27:19,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:27:19,152 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-03 03:27:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-03 03:27:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:27:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:27:19,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:27:19,153 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 03:27:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 03:27:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 03:27:19,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 03:27:19,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:27:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:27:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:27:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:27:19,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:27:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 03:27:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 03:27:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:27:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:27:19,585 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:27:19,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:27:21,311 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:27:21,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:27:21,592 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:27:21,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:21 BoogieIcfgContainer [2022-11-03 03:27:21,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:27:21,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:27:21,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:27:21,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:27:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:27:14" (1/3) ... [2022-11-03 03:27:21,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e6d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:21, skipping insertion in model container [2022-11-03 03:27:21,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:18" (2/3) ... [2022-11-03 03:27:21,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e6d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:21, skipping insertion in model container [2022-11-03 03:27:21,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:21" (3/3) ... [2022-11-03 03:27:21,614 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2022-11-03 03:27:21,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:27:21,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:27:21,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:27:21,750 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;@28304e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:27:21,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:27:21,757 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) [2022-11-03 03:27:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 03:27:21,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:21,773 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:27:21,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash -391814898, now seen corresponding path program 1 times [2022-11-03 03:27:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:21,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858991731] [2022-11-03 03:27:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 03:27:27,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858991731] [2022-11-03 03:27:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858991731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:27:27,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:27:27,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:27:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999200623] [2022-11-03 03:27:27,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:27:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:27:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:27:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:27:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:27:27,833 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) [2022-11-03 03:27:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:27:31,040 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2022-11-03 03:27:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:27:31,047 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 [2022-11-03 03:27:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:27:31,065 INFO L225 Difference]: With dead ends: 174 [2022-11-03 03:27:31,065 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 03:27:31,071 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:27:31,086 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 107 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:27:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 921 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 03:27:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 03:27:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2022-11-03 03:27:31,183 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) [2022-11-03 03:27:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2022-11-03 03:27:31,197 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 79 [2022-11-03 03:27:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:27:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2022-11-03 03:27:31,203 INFO L496 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) [2022-11-03 03:27:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2022-11-03 03:27:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 03:27:31,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:31,212 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:27:31,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:27:31,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -171307204, now seen corresponding path program 1 times [2022-11-03 03:27:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:31,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067511048] [2022-11-03 03:27:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 03:27:39,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067511048] [2022-11-03 03:27:39,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067511048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:27:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268712471] [2022-11-03 03:27:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:39,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:39,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:27:39,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb9fd565-ac37-4dcd-b4ac-9fdca8b115ba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:27:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:40,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-03 03:27:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:27:41,122 INFO L390 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 6 treesize of output 5 [2022-11-03 03:27:41,127 INFO L390 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 6 treesize of output 5 [2022-11-03 03:27:41,137 INFO L390 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 6 treesize of output 5 [2022-11-03 03:27:43,257 INFO L390 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 40 treesize of output 28 [2022-11-03 03:27:43,265 INFO L390 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 34 treesize of output 22 [2022-11-03 03:27:44,929 INFO L390 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 17 treesize of output 9 [2022-11-03 03:27:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:27:45,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:27:49,413 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-03 03:28:06,578 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.