./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_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_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/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_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/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_be64793f-0811-44fe-818d-7c608497db6c/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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:55:19,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:55:19,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:55:19,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:55:19,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:55:19,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:55:19,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:55:19,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:55:19,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:55:19,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:55:19,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:55:19,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:55:19,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:55:19,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:55:19,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:55:19,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:55:19,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:55:19,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:55:19,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:55:19,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:55:19,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:55:19,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:55:19,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:55:19,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:55:19,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:55:19,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:55:19,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:55:19,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:55:19,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:55:19,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:55:19,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:55:19,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:55:19,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:55:19,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:55:19,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:55:19,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:55:19,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:55:19,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:55:19,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:55:19,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:55:19,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:55:19,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:55:19,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:55:19,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:55:19,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:55:19,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:55:19,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:55:19,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:55:19,198 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:55:19,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:55:19,198 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:55:19,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:55:19,200 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:55:19,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:55:19,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:55:19,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:55:19,201 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:55:19,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:55:19,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:55:19,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:55:19,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:55:19,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:55:19,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:55:19,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:55:19,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:55:19,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:55:19,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:55:19,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:55:19,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:55:19,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:55:19,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:55:19,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:55:19,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:55:19,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:55:19,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:55:19,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:55:19,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:55:19,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:55:19,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:55:19,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:55:19,210 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_be64793f-0811-44fe-818d-7c608497db6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2021-11-20 23:55:19,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:55:19,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:55:19,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:55:19,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:55:19,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:55:19,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-11-20 23:55:19,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/data/2cd92abae/990ef49837ca4ef98bfa1f96ad1e810d/FLAGd372fb8b5 [2021-11-20 23:55:20,781 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:55:20,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-11-20 23:55:20,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/data/2cd92abae/990ef49837ca4ef98bfa1f96ad1e810d/FLAGd372fb8b5 [2021-11-20 23:55:21,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/data/2cd92abae/990ef49837ca4ef98bfa1f96ad1e810d [2021-11-20 23:55:21,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:55:21,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:55:21,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:55:21,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:55:21,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:55:21,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:55:21" (1/1) ... [2021-11-20 23:55:21,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b48f288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:21, skipping insertion in model container [2021-11-20 23:55:21,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:55:21" (1/1) ... [2021-11-20 23:55:21,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:55:21,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:55:21,668 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_be64793f-0811-44fe-818d-7c608497db6c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2021-11-20 23:55:21,676 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_be64793f-0811-44fe-818d-7c608497db6c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2021-11-20 23:55:22,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:22,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:55:23,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:55:23,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:55:23,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:55:23,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:55:23,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:55:23,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:55:23,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:55:23,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:55:23,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:55:23,530 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:55:23,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:55:23,843 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:55:23,873 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_be64793f-0811-44fe-818d-7c608497db6c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2021-11-20 23:55:23,873 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_be64793f-0811-44fe-818d-7c608497db6c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2021-11-20 23:55:23,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,949 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:23,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:24,065 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:55:24,067 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:55:24,068 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:55:24,069 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:55:24,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:55:24,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:55:24,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:55:24,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:55:24,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:55:24,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:55:24,121 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:55:24,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:24,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:55:24,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:55:24,732 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:55:24,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24 WrapperNode [2021-11-20 23:55:24,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:55:24,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:55:24,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:55:24,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:55:24,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:24,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,152 INFO L137 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 925 [2021-11-20 23:55:25,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:55:25,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:55:25,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:55:25,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:55:25,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:55:25,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:55:25,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:55:25,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:55:25,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (1/1) ... [2021-11-20 23:55:25,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:55:25,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:55:25,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:55:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:55:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-20 23:55:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-20 23:55:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2021-11-20 23:55:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2021-11-20 23:55:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:55:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:55:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:55:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:55:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:55:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-20 23:55:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-20 23:55:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:55:25,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:55:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:55:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:55:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-20 23:55:25,429 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-20 23:55:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:55:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:55:25,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:55:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:55:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:55:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 23:55:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 23:55:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:55:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:55:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:55:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:55:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:55:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 23:55:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 23:55:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:55:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-20 23:55:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-20 23:55:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:55:25,818 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:55:25,821 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:55:27,863 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:55:28,072 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:55:28,072 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:55:28,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:55:28 BoogieIcfgContainer [2021-11-20 23:55:28,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:55:28,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:55:28,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:55:28,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:55:28,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:55:21" (1/3) ... [2021-11-20 23:55:28,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511bb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:55:28, skipping insertion in model container [2021-11-20 23:55:28,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:55:24" (2/3) ... [2021-11-20 23:55:28,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511bb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:55:28, skipping insertion in model container [2021-11-20 23:55:28,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:55:28" (3/3) ... [2021-11-20 23:55:28,088 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2021-11-20 23:55:28,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:55:28,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:55:28,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:55:28,192 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 23:55:28,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:55:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-20 23:55:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:55:28,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:28,248 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 2, 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 23:55:28,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:55:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1241526131, now seen corresponding path program 1 times [2021-11-20 23:55:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:55:28,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477461996] [2021-11-20 23:55:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:28,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:55:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-20 23:55:31,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:55:31,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477461996] [2021-11-20 23:55:31,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477461996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:55:31,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680979592] [2021-11-20 23:55:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:31,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:55:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:55:31,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:55:31,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:55:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:31,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-20 23:55:31,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:31,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-20 23:55:32,268 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 23:55:32,277 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 23:55:32,291 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 23:55:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-20 23:55:35,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:55:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680979592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:35,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:55:35,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2021-11-20 23:55:35,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751452645] [2021-11-20 23:55:35,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:35,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:55:35,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:55:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:55:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:55:35,161 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-20 23:55:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:55:35,728 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2021-11-20 23:55:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:55:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2021-11-20 23:55:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:55:35,763 INFO L225 Difference]: With dead ends: 241 [2021-11-20 23:55:35,763 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 23:55:35,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:55:35,780 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 39 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:55:35,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 871 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 91 Unchecked, 0.4s Time] [2021-11-20 23:55:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 23:55:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-20 23:55:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2021-11-20 23:55:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2021-11-20 23:55:35,856 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 82 [2021-11-20 23:55:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:55:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2021-11-20 23:55:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-20 23:55:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2021-11-20 23:55:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-20 23:55:35,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:35,864 INFO L514 BasicCegarLoop]: trace histogram [10, 4, 2, 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, 1, 1, 1, 1, 1, 1] [2021-11-20 23:55:35,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:55:36,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:55:36,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:55:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 107369648, now seen corresponding path program 1 times [2021-11-20 23:55:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:55:36,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344860747] [2021-11-20 23:55:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:36,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:55:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-20 23:55:37,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:55:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344860747] [2021-11-20 23:55:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344860747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:55:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93349077] [2021-11-20 23:55:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:37,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:55:37,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:55:37,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:55:37,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be64793f-0811-44fe-818d-7c608497db6c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:55:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-20 23:55:38,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:38,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-11-20 23:55:38,831 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 18 treesize of output 14 [2021-11-20 23:55:40,030 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 23:55:40,030 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 49 treesize of output 31 [2021-11-20 23:55:40,049 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 23:55:40,049 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 34 treesize of output 27 [2021-11-20 23:55:42,071 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_1| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_1| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_1|) 8)) (not (= .cse0 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_1| 0))))) is different from true [2021-11-20 23:55:44,092 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_2| 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_2| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_2|) 8) .cse0) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:46,050 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_3| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_3| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_3| 0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_3|) 8)) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:47,759 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_4| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_4| 0)) (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_4|) 8) .cse0) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_4| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:49,525 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_5| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_5|) 8) .cse0) (not (= .cse0 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_5| 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_5| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|))))) is different from true [2021-11-20 23:55:51,294 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_6| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_6| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_6| 0)) (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_6|) 8) .cse0) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:53,103 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_7| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_7|) 8)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_7| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_7| 0)) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:54,860 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_8| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_8| 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_8| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|)) (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_8|) 8) .cse0) (not (= .cse0 0))))) is different from true [2021-11-20 23:55:56,614 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| Int) (|v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_9| Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|)))) (and (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_9|) 8) .cse0) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_9| 0)) (not (= .cse0 0)) (not (= |v_aws_byte_cursor_compare_lexical_~lhs#1.base_BEFORE_CALL_9| |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|))))) is different from true [2021-11-20 23:56:00,437 INFO L354 Elim1Store]: treesize reduction 36, result has 55.6 percent of original size [2021-11-20 23:56:00,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 126 [2021-11-20 23:56:00,465 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 120 treesize of output 112 [2021-11-20 23:56:00,471 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 112 treesize of output 104 [2021-11-20 23:56:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 65 not checked. [2021-11-20 23:56:00,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:01,752 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-20 23:56:16,930 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.