./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs --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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:38:14,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:38:14,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:38:14,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:38:14,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:38:14,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:38:14,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:38:14,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:38:14,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:38:14,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:38:14,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:38:14,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:38:14,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:38:14,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:38:14,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:38:14,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:38:14,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:38:14,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:38:14,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:38:14,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:38:14,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:38:14,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:38:14,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:38:14,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:38:14,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:38:14,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:38:14,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:38:14,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:38:14,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:38:14,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:38:14,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:38:14,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:38:14,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:38:14,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:38:14,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:38:14,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:38:14,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:38:14,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:38:14,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:38:14,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:38:14,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:38:14,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:38:14,904 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:38:14,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:38:14,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:38:14,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:38:14,907 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:38:14,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:38:14,908 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:38:14,909 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:38:14,909 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:38:14,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:38:14,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:38:14,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:38:14,911 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:38:14,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:38:14,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:38:14,912 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:38:14,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:38:14,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:38:14,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:38:14,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:38:14,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:38:14,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:38:14,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:38:14,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:38:14,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:38:14,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:38:14,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:38:14,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:38:14,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:14,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:38:14,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:38:14,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:38:14,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:38:14,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:38:14,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:38:14,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:38:14,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:38:14,933 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_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2021-11-19 14:38:15,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:38:15,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:38:15,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:38:15,287 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:38:15,288 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:38:15,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-19 14:38:15,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/2d49dc504/3539f1e1aabe4ea6ad32cb44af634da2/FLAG1751fb191 [2021-11-19 14:38:16,299 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:38:16,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-19 14:38:16,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/2d49dc504/3539f1e1aabe4ea6ad32cb44af634da2/FLAG1751fb191 [2021-11-19 14:38:16,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/2d49dc504/3539f1e1aabe4ea6ad32cb44af634da2 [2021-11-19 14:38:16,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:38:16,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:38:16,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:16,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:38:16,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:38:16,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:16" (1/1) ... [2021-11-19 14:38:16,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3365c7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:16, skipping insertion in model container [2021-11-19 14:38:16,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:16" (1/1) ... [2021-11-19 14:38:16,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:38:16,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:17,302 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-19 14:38:17,312 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-19 14:38:17,346 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:38:17,356 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:38:18,483 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,490 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,491 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,492 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,513 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,520 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,527 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:18,528 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:19,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:38:19,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:38:19,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:38:19,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:38:19,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:38:19,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:38:19,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:38:19,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:38:19,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:38:19,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:38:19,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:38:19,512 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:19,512 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:19,540 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:19,585 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:38:19,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a6c0de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:19, skipping insertion in model container [2021-11-19 14:38:19,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:19,587 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:38:19,589 INFO L158 Benchmark]: Toolchain (without parser) took 2850.69ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 82.4MB in the beginning and 74.0MB in the end (delta: 8.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-19 14:38:19,590 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:38:19,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2847.37ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 82.4MB in the beginning and 74.0MB in the end (delta: 8.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-19 14:38:19,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2847.37ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 82.4MB in the beginning and 74.0MB in the end (delta: 8.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6991]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs --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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:38:22,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:38:22,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:38:22,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:38:22,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:38:22,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:38:22,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:38:22,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:38:22,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:38:22,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:38:22,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:38:22,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:38:22,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:38:22,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:38:22,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:38:22,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:38:22,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:38:22,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:38:22,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:38:22,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:38:22,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:38:22,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:38:22,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:38:22,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:38:22,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:38:22,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:38:22,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:38:22,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:38:22,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:38:22,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:38:22,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:38:22,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:38:22,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:38:22,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:38:22,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:38:22,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:38:22,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:38:22,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:38:22,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:38:22,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:38:22,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:38:22,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:38:22,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:38:22,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:38:22,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:38:22,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:38:22,570 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:38:22,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:38:22,570 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:38:22,570 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:38:22,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:38:22,571 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:38:22,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:38:22,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:38:22,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:38:22,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:38:22,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:38:22,575 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:38:22,575 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:38:22,575 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:38:22,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:38:22,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:38:22,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:38:22,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:38:22,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:38:22,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:38:22,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:22,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:38:22,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:38:22,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:38:22,577 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:38:22,578 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:22,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:38:22,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:38:22,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:38:22,578 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2021-11-19 14:38:23,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:38:23,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:38:23,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:38:23,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:38:23,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:38:23,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-19 14:38:23,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/be9c73347/876cfe39dc9f44c09b5e20e191edf8b0/FLAGd3ab2166a [2021-11-19 14:38:24,284 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:38:24,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2021-11-19 14:38:24,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/be9c73347/876cfe39dc9f44c09b5e20e191edf8b0/FLAGd3ab2166a [2021-11-19 14:38:24,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/data/be9c73347/876cfe39dc9f44c09b5e20e191edf8b0 [2021-11-19 14:38:24,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:38:24,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:38:24,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:24,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:38:24,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:38:24,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:24" (1/1) ... [2021-11-19 14:38:24,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512ebb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:24, skipping insertion in model container [2021-11-19 14:38:24,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:38:24" (1/1) ... [2021-11-19 14:38:24,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:38:24,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:25,185 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-19 14:38:25,199 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-19 14:38:25,233 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:38:25,242 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:38:26,272 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,273 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,274 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,275 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,277 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,309 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,313 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:26,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:38:26,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:38:26,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:38:26,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:38:26,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:38:26,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:38:26,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:38:26,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:38:26,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:38:26,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:38:27,125 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:38:27,342 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,350 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,396 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:27,484 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:38:27,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:38:27,628 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-19 14:38:27,629 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-19 14:38:27,631 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:38:27,634 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:38:27,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,724 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,753 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,754 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,757 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:27,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:38:27,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:38:27,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:38:27,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:38:27,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:38:27,834 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:38:27,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:38:27,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:38:27,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:38:27,840 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:38:27,864 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:38:28,012 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,013 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,037 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:28,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:38:28,113 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2021-11-19 14:38:28,120 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_86c58862-40a4-4969-9db1-949231ad70db/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2021-11-19 14:38:28,123 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:38:28,124 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:38:28,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,194 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,206 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,207 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,214 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:38:28,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:38:28,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:38:28,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:38:28,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:38:28,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:38:28,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:38:28,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:38:28,261 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:38:28,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:38:28,286 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:38:28,483 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,484 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:38:28,522 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:38:28,821 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:38:28,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28 WrapperNode [2021-11-19 14:38:28,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:38:28,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:38:28,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:38:28,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:38:28,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:28,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,084 INFO L137 Inliner]: procedures = 702, calls = 2274, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 390 [2021-11-19 14:38:29,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:38:29,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:38:29,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:38:29,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:38:29,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:38:29,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:38:29,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:38:29,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:38:29,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (1/1) ... [2021-11-19 14:38:29,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:38:29,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:38:29,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:38:29,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:38:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-19 14:38:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-19 14:38:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 14:38:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 14:38:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:38:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:38:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:38:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:38:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:38:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:38:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:38:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:38:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:38:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:38:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:38:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:38:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:38:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:38:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:38:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:38:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:38:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:38:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:38:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:38:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:38:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:38:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:38:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:38:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:38:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:38:29,664 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:38:29,667 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:38:30,851 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:38:30,864 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:38:30,867 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:38:30,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:38:30 BoogieIcfgContainer [2021-11-19 14:38:30,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:38:30,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:38:30,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:38:30,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:38:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:38:24" (1/3) ... [2021-11-19 14:38:30,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49511a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:38:30, skipping insertion in model container [2021-11-19 14:38:30,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:38:28" (2/3) ... [2021-11-19 14:38:30,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49511a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:38:30, skipping insertion in model container [2021-11-19 14:38:30,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:38:30" (3/3) ... [2021-11-19 14:38:30,892 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2021-11-19 14:38:30,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:38:30,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:38:31,005 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:38:31,013 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 [2021-11-19 14:38:31,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:38:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 14:38:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:38:31,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:31,049 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:38:31,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:31,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:31,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1676862830, now seen corresponding path program 1 times [2021-11-19 14:38:31,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:31,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877889996] [2021-11-19 14:38:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:31,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:31,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:31,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:38:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:31,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:38:31,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:38:31,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:38:31,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:31,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877889996] [2021-11-19 14:38:31,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877889996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:31,656 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:38:31,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463973199] [2021-11-19 14:38:31,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:31,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:38:31,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:38:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:38:31,705 INFO L87 Difference]: Start difference. First operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:38:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:31,753 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2021-11-19 14:38:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:38:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-19 14:38:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:31,767 INFO L225 Difference]: With dead ends: 205 [2021-11-19 14:38:31,767 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:38:31,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:38:31,776 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:31,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:38:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:38:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:38:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:38:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-19 14:38:31,833 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 36 [2021-11-19 14:38:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:31,835 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-19 14:38:31,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 14:38:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-19 14:38:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:38:31,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:31,840 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:38:31,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:32,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:32,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -12080912, now seen corresponding path program 1 times [2021-11-19 14:38:32,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:32,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237489019] [2021-11-19 14:38:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:32,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:32,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:32,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:32,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:38:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:32,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:38:32,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:38:32,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:38:32,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:32,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237489019] [2021-11-19 14:38:32,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237489019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:32,731 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:32,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:38:32,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514196113] [2021-11-19 14:38:32,732 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:32,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:38:32,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:32,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:38:32,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:38:32,738 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 14:38:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:32,833 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2021-11-19 14:38:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:38:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-11-19 14:38:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:32,842 INFO L225 Difference]: With dead ends: 148 [2021-11-19 14:38:32,842 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:38:32,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:38:32,848 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 6 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:32,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:38:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:38:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:38:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:38:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2021-11-19 14:38:32,877 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 36 [2021-11-19 14:38:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:32,878 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2021-11-19 14:38:32,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-19 14:38:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2021-11-19 14:38:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:38:32,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:32,893 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:38:32,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:38:33,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:33,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2108660913, now seen corresponding path program 1 times [2021-11-19 14:38:33,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:33,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208906660] [2021-11-19 14:38:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:33,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:33,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:33,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:38:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:33,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:38:33,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:38:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:38:33,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:33,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208906660] [2021-11-19 14:38:33,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208906660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:33,945 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:33,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-19 14:38:33,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520650564] [2021-11-19 14:38:33,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:38:33,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:38:33,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:38:33,948 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:38:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:34,183 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2021-11-19 14:38:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:38:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2021-11-19 14:38:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:34,187 INFO L225 Difference]: With dead ends: 138 [2021-11-19 14:38:34,187 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:38:34,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:38:34,189 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 52 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:34,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 753 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:38:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:38:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:38:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:38:34,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2021-11-19 14:38:34,208 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 64 [2021-11-19 14:38:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:34,208 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2021-11-19 14:38:34,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:38:34,209 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2021-11-19 14:38:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 14:38:34,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:34,211 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-19 14:38:34,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:34,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:34,433 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -63104247, now seen corresponding path program 1 times [2021-11-19 14:38:34,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:34,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552214317] [2021-11-19 14:38:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:34,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:34,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:34,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:38:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:34,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:38:34,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:38:34,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:38:35,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:35,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552214317] [2021-11-19 14:38:35,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552214317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:35,147 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:35,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:38:35,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604721225] [2021-11-19 14:38:35,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:35,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:38:35,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:38:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:38:35,150 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:38:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:35,209 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2021-11-19 14:38:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:38:35,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2021-11-19 14:38:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:35,212 INFO L225 Difference]: With dead ends: 138 [2021-11-19 14:38:35,213 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:38:35,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:38:35,214 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:35,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 370 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:38:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:38:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:38:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:38:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-11-19 14:38:35,242 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 65 [2021-11-19 14:38:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:35,243 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-11-19 14:38:35,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:38:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-11-19 14:38:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:38:35,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:35,245 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-19 14:38:35,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:35,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:35,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash -33040941, now seen corresponding path program 1 times [2021-11-19 14:38:35,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:35,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126298171] [2021-11-19 14:38:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:35,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:35,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:35,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:38:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:35,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:38:35,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:38:36,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-19 14:38:36,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:36,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126298171] [2021-11-19 14:38:36,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126298171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:38:36,581 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:38:36,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:38:36,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448535833] [2021-11-19 14:38:36,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:36,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:38:36,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:38:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:38:36,584 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:38:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:36,708 INFO L93 Difference]: Finished difference Result 170 states and 212 transitions. [2021-11-19 14:38:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:38:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 83 [2021-11-19 14:38:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:36,713 INFO L225 Difference]: With dead ends: 170 [2021-11-19 14:38:36,713 INFO L226 Difference]: Without dead ends: 101 [2021-11-19 14:38:36,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:38:36,715 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 8 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:36,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 500 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:38:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-19 14:38:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-19 14:38:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:38:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2021-11-19 14:38:36,731 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 83 [2021-11-19 14:38:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:36,731 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2021-11-19 14:38:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:38:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2021-11-19 14:38:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 14:38:36,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:36,734 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-11-19 14:38:36,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:36,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:36,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash -151358824, now seen corresponding path program 1 times [2021-11-19 14:38:36,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:36,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334609525] [2021-11-19 14:38:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:36,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:36,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:36,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:36,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:38:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:37,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:38:37,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 14:38:38,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-19 14:38:40,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:40,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334609525] [2021-11-19 14:38:40,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334609525] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:38:40,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:38:40,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-19 14:38:40,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645473268] [2021-11-19 14:38:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:40,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:38:40,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:38:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:38:40,105 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 14:38:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:40,532 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2021-11-19 14:38:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:38:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 117 [2021-11-19 14:38:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:40,533 INFO L225 Difference]: With dead ends: 116 [2021-11-19 14:38:40,533 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:38:40,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:38:40,536 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:40,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 259 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-11-19 14:38:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:38:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:38:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:38:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:38:40,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2021-11-19 14:38:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:40,538 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:38:40,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 9 states have internal predecessors, (60), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 14:38:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:38:40,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:38:40,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:38:40,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:40,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:40,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 14:38:41,104 INFO L854 garLoopResultBuilder]: At program point L6816(lines 6807 6817) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-19 14:38:41,105 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2021-11-19 14:38:41,105 INFO L858 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2021-11-19 14:38:41,105 INFO L854 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-19 14:38:41,105 INFO L858 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2021-11-19 14:38:41,106 INFO L858 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2021-11-19 14:38:41,106 INFO L854 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-19 14:38:41,106 INFO L858 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2021-11-19 14:38:41,106 INFO L854 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-19 14:38:41,106 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-19 14:38:41,107 INFO L858 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2021-11-19 14:38:41,107 INFO L854 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-19 14:38:41,107 INFO L861 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6801 6805) the Hoare annotation is: true [2021-11-19 14:38:41,107 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-11-19 14:38:41,107 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2021-11-19 14:38:41,107 INFO L861 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6883 6888) the Hoare annotation is: true [2021-11-19 14:38:41,108 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2021-11-19 14:38:41,108 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2021-11-19 14:38:41,108 INFO L858 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2021-11-19 14:38:41,108 INFO L854 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (= bounded_malloc_~size |bounded_malloc_#in~size|) [2021-11-19 14:38:41,108 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-19 14:38:41,108 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-19 14:38:41,109 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-19 14:38:41,109 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-19 14:38:41,109 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-19 14:38:41,109 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-19 14:38:41,109 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-19 14:38:41,109 INFO L858 garLoopResultBuilder]: For program point L8097(lines 8097 8101) no Hoare annotation was computed. [2021-11-19 14:38:41,110 INFO L858 garLoopResultBuilder]: For program point L8095-4(lines 8095 8108) no Hoare annotation was computed. [2021-11-19 14:38:41,110 INFO L861 garLoopResultBuilder]: At program point L8095-3(lines 8095 8108) the Hoare annotation is: true [2021-11-19 14:38:41,110 INFO L858 garLoopResultBuilder]: For program point L8095-2(lines 8095 8108) no Hoare annotation was computed. [2021-11-19 14:38:41,110 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_c_strFINAL(lines 8078 8111) no Hoare annotation was computed. [2021-11-19 14:38:41,110 INFO L858 garLoopResultBuilder]: For program point L8083(lines 8083 8085) no Hoare annotation was computed. [2021-11-19 14:38:41,110 INFO L861 garLoopResultBuilder]: At program point L8080-1(line 8080) the Hoare annotation is: true [2021-11-19 14:38:41,111 INFO L861 garLoopResultBuilder]: At program point L8080(line 8080) the Hoare annotation is: true [2021-11-19 14:38:41,111 INFO L861 garLoopResultBuilder]: At program point aws_array_eq_c_strENTRY(lines 8078 8111) the Hoare annotation is: true [2021-11-19 14:38:41,111 INFO L858 garLoopResultBuilder]: For program point L8103(lines 8103 8107) no Hoare annotation was computed. [2021-11-19 14:38:41,111 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_c_strEXIT(lines 8078 8111) no Hoare annotation was computed. [2021-11-19 14:38:41,111 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2021-11-19 14:38:41,111 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2021-11-19 14:38:41,112 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6890 6892) the Hoare annotation is: true [2021-11-19 14:38:41,112 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2021-11-19 14:38:41,112 INFO L858 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2021-11-19 14:38:41,112 INFO L858 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2021-11-19 14:38:41,112 INFO L858 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2021-11-19 14:38:41,112 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2021-11-19 14:38:41,112 INFO L858 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2021-11-19 14:38:41,113 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2021-11-19 14:38:41,113 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-19 14:38:41,113 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-19 14:38:41,113 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-11-19 14:38:41,113 INFO L861 garLoopResultBuilder]: At program point L8925(line 8925) the Hoare annotation is: true [2021-11-19 14:38:41,113 INFO L858 garLoopResultBuilder]: For program point L7579(line 7579) no Hoare annotation was computed. [2021-11-19 14:38:41,114 INFO L858 garLoopResultBuilder]: For program point L7100(lines 7100 7113) no Hoare annotation was computed. [2021-11-19 14:38:41,114 INFO L858 garLoopResultBuilder]: For program point L7579-5(line 7579) no Hoare annotation was computed. [2021-11-19 14:38:41,114 INFO L854 garLoopResultBuilder]: At program point L7579-4(line 7579) the Hoare annotation is: (or (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~str#1.offset|) (not (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~c_str#1.base|)) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_#res#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_~str~1#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~str#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.base|))) [2021-11-19 14:38:41,114 INFO L858 garLoopResultBuilder]: For program point L7579-3(line 7579) no Hoare annotation was computed. [2021-11-19 14:38:41,114 INFO L854 garLoopResultBuilder]: At program point L7579-2(line 7579) the Hoare annotation is: (or (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~str#1.offset|) (not (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~c_str#1.base|)) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_#res#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_~str~1#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~str#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.base|))) [2021-11-19 14:38:41,115 INFO L854 garLoopResultBuilder]: At program point L8921(line 8921) the Hoare annotation is: false [2021-11-19 14:38:41,115 INFO L858 garLoopResultBuilder]: For program point L8921-1(line 8921) no Hoare annotation was computed. [2021-11-19 14:38:41,115 INFO L858 garLoopResultBuilder]: For program point L6820-1(line 6820) no Hoare annotation was computed. [2021-11-19 14:38:41,115 INFO L854 garLoopResultBuilder]: At program point L6820(line 6820) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,115 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 14:38:41,115 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 14:38:41,116 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 14:38:41,116 INFO L858 garLoopResultBuilder]: For program point L7580(lines 7580 7588) no Hoare annotation was computed. [2021-11-19 14:38:41,116 INFO L858 garLoopResultBuilder]: For program point L7101-1(lines 7100 7113) no Hoare annotation was computed. [2021-11-19 14:38:41,116 INFO L854 garLoopResultBuilder]: At program point L7101(line 7101) the Hoare annotation is: false [2021-11-19 14:38:41,116 INFO L858 garLoopResultBuilder]: For program point L8918(lines 8918 8923) no Hoare annotation was computed. [2021-11-19 14:38:41,116 INFO L854 garLoopResultBuilder]: At program point L6821-1(line 6821) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,117 INFO L854 garLoopResultBuilder]: At program point L6821(line 6821) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,117 INFO L858 garLoopResultBuilder]: For program point L7589(lines 7589 7597) no Hoare annotation was computed. [2021-11-19 14:38:41,117 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 14:38:41,117 INFO L854 garLoopResultBuilder]: At program point L6272(lines 6263 6273) the Hoare annotation is: false [2021-11-19 14:38:41,117 INFO L858 garLoopResultBuilder]: For program point L8919-2(line 8919) no Hoare annotation was computed. [2021-11-19 14:38:41,117 INFO L854 garLoopResultBuilder]: At program point L8915(line 8915) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,117 INFO L858 garLoopResultBuilder]: For program point L8915-1(lines 8915 8916) no Hoare annotation was computed. [2021-11-19 14:38:41,118 INFO L854 garLoopResultBuilder]: At program point L8919(line 8919) the Hoare annotation is: false [2021-11-19 14:38:41,118 INFO L854 garLoopResultBuilder]: At program point L8919-1(line 8919) the Hoare annotation is: false [2021-11-19 14:38:41,118 INFO L854 garLoopResultBuilder]: At program point L7598(line 7598) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.base|)) [2021-11-19 14:38:41,118 INFO L854 garLoopResultBuilder]: At program point L6826(line 6826) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_~str~1#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,118 INFO L858 garLoopResultBuilder]: For program point L8915-3(lines 8915 8916) no Hoare annotation was computed. [2021-11-19 14:38:41,119 INFO L854 garLoopResultBuilder]: At program point L7598-2(lines 7577 7599) the Hoare annotation is: (or (and (not (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_~c_str#1.base|)) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_#res#1.base|)) (= |ULTIMATE.start_aws_string_eq_c_str_#res#1| (_ bv0 8)) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_~str~1#1.base|))) (and (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~c_str~0#1.base|))) [2021-11-19 14:38:41,119 INFO L858 garLoopResultBuilder]: For program point L8911(lines 8911 8924) no Hoare annotation was computed. [2021-11-19 14:38:41,119 INFO L858 garLoopResultBuilder]: For program point L7598-1(line 7598) no Hoare annotation was computed. [2021-11-19 14:38:41,119 INFO L858 garLoopResultBuilder]: For program point L6822(line 6822) no Hoare annotation was computed. [2021-11-19 14:38:41,119 INFO L858 garLoopResultBuilder]: For program point L7111-1(line 7111) no Hoare annotation was computed. [2021-11-19 14:38:41,119 INFO L854 garLoopResultBuilder]: At program point L7111(line 7111) the Hoare annotation is: false [2021-11-19 14:38:41,120 INFO L858 garLoopResultBuilder]: For program point L6826-1(line 6826) no Hoare annotation was computed. [2021-11-19 14:38:41,120 INFO L858 garLoopResultBuilder]: For program point L7107-1(line 7107) no Hoare annotation was computed. [2021-11-19 14:38:41,120 INFO L854 garLoopResultBuilder]: At program point L7107(line 7107) the Hoare annotation is: false [2021-11-19 14:38:41,120 INFO L854 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2021-11-19 14:38:41,120 INFO L858 garLoopResultBuilder]: For program point L8920-1(line 8920) no Hoare annotation was computed. [2021-11-19 14:38:41,120 INFO L858 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2021-11-19 14:38:41,120 INFO L858 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2021-11-19 14:38:41,121 INFO L861 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2021-11-19 14:38:41,121 INFO L854 garLoopResultBuilder]: At program point L6827(lines 6819 6828) the Hoare annotation is: (and (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_#res#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.base|) (not (= (_ bv0 64) |ULTIMATE.start_ensure_c_str_is_allocated_~str~1#1.base|)) (= (_ bv0 64) |ULTIMATE.start_aws_string_eq_c_str_harness_~str~3#1.offset|)) [2021-11-19 14:38:41,121 INFO L858 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2021-11-19 14:38:41,121 INFO L861 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2021-11-19 14:38:41,121 INFO L858 garLoopResultBuilder]: For program point L7108-1(lines 7108 7110) no Hoare annotation was computed. [2021-11-19 14:38:41,121 INFO L854 garLoopResultBuilder]: At program point L7108(lines 7108 7110) the Hoare annotation is: false [2021-11-19 14:38:41,122 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-19 14:38:41,122 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-19 14:38:41,122 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-19 14:38:41,122 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-19 14:38:41,122 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-19 14:38:41,122 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-19 14:38:41,126 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 14:38:41,128 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:38:41,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:38:41 BoogieIcfgContainer [2021-11-19 14:38:41,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:38:41,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:38:41,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:38:41,155 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:38:41,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:38:30" (3/4) ... [2021-11-19 14:38:41,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 14:38:41,167 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:38:41,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-19 14:38:41,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-19 14:38:41,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-19 14:38:41,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-19 14:38:41,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 14:38:41,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq_c_str [2021-11-19 14:38:41,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-19 14:38:41,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-11-19 14:38:41,192 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2021-11-19 14:38:41,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-19 14:38:41,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 14:38:41,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 14:38:41,246 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0bv64 == \result) && 0bv64 == str) && !(0bv64 == str)) && 0bv64 == str [2021-11-19 14:38:41,247 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(0bv64 == c_str) && !(0bv64 == \result)) && \result == 0bv8) && !(0bv64 == str)) || (0bv64 == c_str && 0bv64 == c_str) [2021-11-19 14:38:41,251 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) [2021-11-19 14:38:41,630 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:38:41,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:38:41,631 INFO L158 Benchmark]: Toolchain (without parser) took 16973.74ms. Allocated memory was 54.5MB in the beginning and 216.0MB in the end (delta: 161.5MB). Free memory was 35.5MB in the beginning and 117.7MB in the end (delta: -82.2MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,632 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:38:41,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4163.06ms. Allocated memory was 54.5MB in the beginning and 113.2MB in the end (delta: 58.7MB). Free memory was 35.2MB in the beginning and 64.4MB in the end (delta: -29.3MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 261.81ms. Allocated memory is still 113.2MB. Free memory was 64.4MB in the beginning and 55.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,633 INFO L158 Benchmark]: Boogie Preprocessor took 125.35ms. Allocated memory is still 113.2MB. Free memory was 55.1MB in the beginning and 49.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,634 INFO L158 Benchmark]: RCFGBuilder took 1660.40ms. Allocated memory was 113.2MB in the beginning and 167.8MB in the end (delta: 54.5MB). Free memory was 49.8MB in the beginning and 114.2MB in the end (delta: -64.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,635 INFO L158 Benchmark]: TraceAbstraction took 10277.73ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 69.8MB in the end (delta: 44.4MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,635 INFO L158 Benchmark]: Witness Printer took 476.01ms. Allocated memory was 167.8MB in the beginning and 216.0MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 117.7MB in the end (delta: -47.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-19 14:38:41,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4163.06ms. Allocated memory was 54.5MB in the beginning and 113.2MB in the end (delta: 58.7MB). Free memory was 35.2MB in the beginning and 64.4MB in the end (delta: -29.3MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 261.81ms. Allocated memory is still 113.2MB. Free memory was 64.4MB in the beginning and 55.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.35ms. Allocated memory is still 113.2MB. Free memory was 55.1MB in the beginning and 49.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1660.40ms. Allocated memory was 113.2MB in the beginning and 167.8MB in the end (delta: 54.5MB). Free memory was 49.8MB in the beginning and 114.2MB in the end (delta: -64.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10277.73ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 69.8MB in the end (delta: 44.4MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Witness Printer took 476.01ms. Allocated memory was 167.8MB in the beginning and 216.0MB in the end (delta: 48.2MB). Free memory was 69.8MB in the beginning and 117.7MB in the end (delta: -47.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 2398 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 1725 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 673 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 800 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 139 PreInvPairs, 159 NumberOfFragments, 234 HoareAnnotationTreeSize, 139 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 41 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 790 ConstructedInterpolants, 10 QuantifiedInterpolants, 1377 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2552 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 464/504 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8095]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6263]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8925]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7577]: Loop Invariant Derived loop invariant: (((!(0bv64 == c_str) && !(0bv64 == \result)) && \result == 0bv8) && !(0bv64 == str)) || (0bv64 == c_str && 0bv64 == c_str) - InvariantResult [Line: 6807]: Loop Invariant [2021-11-19 14:38:41,669 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,669 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-19 14:38:41,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] Derived loop invariant: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) - InvariantResult [Line: 6819]: Loop Invariant Derived loop invariant: ((!(0bv64 == \result) && 0bv64 == str) && !(0bv64 == str)) && 0bv64 == str RESULT: Ultimate proved your program to be correct! [2021-11-19 14:38:41,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c58862-40a4-4969-9db1-949231ad70db/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE