./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:30:53,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:30:53,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:30:53,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:30:53,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:30:53,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:30:53,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:30:53,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:30:53,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:30:53,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:30:53,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:30:53,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:30:53,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:30:53,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:30:53,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:30:53,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:30:53,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:30:53,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:30:53,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:30:53,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:30:53,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:30:53,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:30:53,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:30:53,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:30:53,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:30:53,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:30:53,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:30:53,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:30:53,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:30:53,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:30:53,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:30:53,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:30:53,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:30:53,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:30:53,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:30:53,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:30:53,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:30:53,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:30:53,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:30:53,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:30:53,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:30:53,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:30:53,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:30:53,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:30:53,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:30:53,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:30:53,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:30:53,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:30:53,882 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:30:53,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:30:53,882 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:30:53,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:30:53,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:30:53,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:30:53,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:30:53,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:30:53,884 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:30:53,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:30:53,884 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:30:53,884 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:30:53,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:30:53,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:30:53,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:30:53,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:30:53,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:30:53,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:30:53,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:30:53,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:30:53,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:30:53,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:30:53,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:30:53,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:30:53,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:30:53,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:30:53,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:30:53,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:30:53,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:30:53,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:30:53,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:30:53,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:30:53,888 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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-21 00:30:54,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:30:54,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:30:54,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:30:54,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:30:54,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:30:54,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-21 00:30:54,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/data/eac69fec1/b82b6cc37e3d461fb062f851c60fcb65/FLAG78f1a1031 [2021-11-21 00:30:55,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:30:55,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-21 00:30:55,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/data/eac69fec1/b82b6cc37e3d461fb062f851c60fcb65/FLAG78f1a1031 [2021-11-21 00:30:55,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/data/eac69fec1/b82b6cc37e3d461fb062f851c60fcb65 [2021-11-21 00:30:55,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:30:55,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:30:55,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:30:55,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:30:55,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:30:55,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:30:55" (1/1) ... [2021-11-21 00:30:55,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc97b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:55, skipping insertion in model container [2021-11-21 00:30:55,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:30:55" (1/1) ... [2021-11-21 00:30:55,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:30:55,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:30:56,089 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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-21 00:30:56,096 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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-21 00:30:57,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,191 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,192 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,668 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:30:57,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:30:57,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:30:57,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:30:57,673 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:30:57,674 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:30:57,675 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:30:57,676 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:30:57,676 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:30:57,677 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:30:57,851 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:30:57,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:57,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:30:58,144 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:30:58,174 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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-21 00:30:58,175 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_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-21 00:30:58,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:30:58,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:30:58,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:30:58,301 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:30:58,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:30:58,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:30:58,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:30:58,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:30:58,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:30:58,308 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:30:58,334 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:30:58,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:30:58,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:30:58,742 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:30:58,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58 WrapperNode [2021-11-21 00:30:58,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:30:58,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:30:58,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:30:58,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:30:58,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:58,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,018 INFO L137 Inliner]: procedures = 691, calls = 2643, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 859 [2021-11-21 00:30:59,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:30:59,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:30:59,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:30:59,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:30:59,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:30:59,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:30:59,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:30:59,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:30:59,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (1/1) ... [2021-11-21 00:30:59,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:30:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:30:59,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:30:59,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:30:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-21 00:30:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-21 00:30:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-21 00:30:59,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-21 00:30:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:30:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:30:59,223 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:30:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2021-11-21 00:30:59,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2021-11-21 00:30:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:30:59,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:30:59,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:30:59,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-21 00:30:59,243 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-21 00:30:59,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:30:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:30:59,244 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:30:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:30:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:30:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:30:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-21 00:30:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-21 00:30:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:30:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:30:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:30:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:30:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:30:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-21 00:30:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-21 00:30:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 00:30:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 00:30:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:30:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:30:59,598 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:30:59,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:31:01,289 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:31:01,589 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:31:01,589 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:31:01,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:01 BoogieIcfgContainer [2021-11-21 00:31:01,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:31:01,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:31:01,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:31:01,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:31:01,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:30:55" (1/3) ... [2021-11-21 00:31:01,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ffcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:01, skipping insertion in model container [2021-11-21 00:31:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:30:58" (2/3) ... [2021-11-21 00:31:01,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ffcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:01, skipping insertion in model container [2021-11-21 00:31:01,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:01" (3/3) ... [2021-11-21 00:31:01,599 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-21 00:31:01,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:31:01,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:31:01,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:31:01,659 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 [2021-11-21 00:31:01,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:31:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-21 00:31:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-21 00:31:01,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:01,688 INFO L514 BasicCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:01,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -963794593, now seen corresponding path program 1 times [2021-11-21 00:31:01,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:01,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024605615] [2021-11-21 00:31:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:01,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-21 00:31:04,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:04,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024605615] [2021-11-21 00:31:04,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024605615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:31:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217978352] [2021-11-21 00:31:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:04,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:04,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:04,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c0cacdd-b038-4f5f-9e23-3b9cb4e0c30b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:31:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-21 00:31:05,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:05,651 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 [2021-11-21 00:31:05,656 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 [2021-11-21 00:31:05,664 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 [2021-11-21 00:31:10,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:31:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:31:11,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:31:12,727 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-21 00:31:34,927 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.