./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF --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 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:17:20,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:17:20,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:17:20,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:17:20,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:17:20,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:17:20,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:17:20,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:17:20,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:17:20,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:17:20,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:17:20,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:17:20,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:17:20,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:17:20,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:17:20,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:17:20,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:17:20,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:17:20,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:17:20,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:17:20,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:17:20,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:17:20,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:17:20,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:17:20,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:17:20,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:17:20,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:17:20,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:17:20,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:17:20,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:17:20,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:17:20,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:17:20,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:17:20,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:17:20,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:17:20,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:17:20,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:17:20,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:17:20,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:17:20,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:17:20,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:17:20,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:17:20,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:17:20,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:17:20,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:17:20,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:17:20,506 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:17:20,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:17:20,506 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:17:20,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:17:20,507 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:17:20,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:17:20,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:17:20,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:17:20,508 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:17:20,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:17:20,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:17:20,509 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:17:20,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:17:20,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:17:20,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:17:20,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:17:20,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:17:20,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:17:20,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:17:20,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:17:20,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:17:20,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:17:20,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:17:20,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:17:20,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:17:20,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:17:20,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:17:20,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:17:20,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:17:20,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:17:20,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:17:20,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:17:20,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:17:20,517 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 [2021-11-12 23:17:20,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:17:20,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:17:20,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:17:20,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:17:20,950 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:17:20,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2021-11-12 23:17:21,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/26f53effd/7500e242d1f2481a9877bf915023d10e/FLAG21b05929f [2021-11-12 23:17:22,105 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:17:22,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2021-11-12 23:17:22,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/26f53effd/7500e242d1f2481a9877bf915023d10e/FLAG21b05929f [2021-11-12 23:17:22,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/26f53effd/7500e242d1f2481a9877bf915023d10e [2021-11-12 23:17:22,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:17:22,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:17:22,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:17:22,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:17:22,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:17:22,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:17:22" (1/1) ... [2021-11-12 23:17:22,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5702e8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:22, skipping insertion in model container [2021-11-12 23:17:22,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:17:22" (1/1) ... [2021-11-12 23:17:22,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:17:22,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:17:22,974 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2021-11-12 23:17:22,982 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2021-11-12 23:17:23,013 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:17:23,021 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:17:24,423 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:24,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:25,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:17:25,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:17:25,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:17:25,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:17:25,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:17:25,109 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:17:25,110 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:17:25,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:17:25,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:17:25,112 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:17:25,338 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:17:25,467 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:25,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:25,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:17:25,666 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) [2021-11-12 23:17:25,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6964a17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:25, skipping insertion in model container [2021-11-12 23:17:25,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:17:25,668 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:17:25,670 INFO L158 Benchmark]: Toolchain (without parser) took 3226.25ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 51.5MB in the end (delta: 26.8MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2021-11-12 23:17:25,671 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory was 61.4MB in the beginning and 61.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:17:25,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3221.07ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 51.5MB in the end (delta: 26.8MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2021-11-12 23:17:25,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory was 61.4MB in the beginning and 61.3MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3221.07ms. Allocated memory is still 102.8MB. Free memory was 78.3MB in the beginning and 51.5MB in the end (delta: 26.8MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF --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 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:17:28,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:17:28,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:17:28,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:17:28,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:17:28,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:17:28,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:17:28,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:17:28,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:17:28,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:17:28,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:17:28,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:17:28,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:17:28,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:17:28,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:17:28,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:17:28,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:17:28,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:17:28,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:17:28,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:17:28,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:17:28,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:17:28,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:17:28,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:17:28,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:17:28,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:17:28,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:17:28,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:17:28,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:17:28,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:17:28,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:17:28,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:17:28,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:17:28,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:17:28,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:17:28,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:17:28,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:17:28,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:17:28,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:17:28,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:17:28,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:17:28,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:17:28,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:17:28,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:17:28,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:17:28,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:17:28,421 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:17:28,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:17:28,422 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:17:28,422 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:17:28,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:17:28,423 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:17:28,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:17:28,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:17:28,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:17:28,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:17:28,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:17:28,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:17:28,425 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:17:28,425 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:17:28,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:17:28,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:17:28,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:17:28,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:17:28,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:17:28,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:17:28,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:17:28,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:17:28,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:17:28,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:17:28,428 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:17:28,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:17:28,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:17:28,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:17:28,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:17:28,429 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 [2021-11-12 23:17:28,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:17:28,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:17:28,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:17:28,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:17:28,987 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:17:28,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2021-11-12 23:17:29,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/dc269b6ca/139b3b6696a94167a1bfbba35b99db34/FLAG9fc23f2d2 [2021-11-12 23:17:30,335 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:17:30,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2021-11-12 23:17:30,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/dc269b6ca/139b3b6696a94167a1bfbba35b99db34/FLAG9fc23f2d2 [2021-11-12 23:17:30,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/data/dc269b6ca/139b3b6696a94167a1bfbba35b99db34 [2021-11-12 23:17:30,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:17:30,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:17:30,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:17:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:17:30,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:17:30,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:17:30" (1/1) ... [2021-11-12 23:17:30,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17816eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:30, skipping insertion in model container [2021-11-12 23:17:30,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:17:30" (1/1) ... [2021-11-12 23:17:30,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:17:30,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:17:31,186 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2021-11-12 23:17:31,196 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2021-11-12 23:17:31,233 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:17:31,243 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:17:32,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:32,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:17:33,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:17:33,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:17:33,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:17:33,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:17:33,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:17:33,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:17:33,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:17:33,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:17:33,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:17:33,304 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:17:33,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:17:33,700 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:17:33,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:17:33,848 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2021-11-12 23:17:33,849 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2021-11-12 23:17:33,851 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:17:33,854 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:17:33,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:33,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:17:34,038 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:17:34,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:17:34,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:17:34,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:17:34,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:17:34,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:17:34,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:17:34,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:17:34,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:17:34,092 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:17:34,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:17:34,308 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:17:34,333 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2021-11-12 23:17:34,334 WARN L228 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_d646ad0a-ba54-4138-b77f-251c0e49aa9c/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2021-11-12 23:17:34,336 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:17:34,337 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:17:34,391 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,423 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,423 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:17:34,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:17:34,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:17:34,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:17:34,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:17:34,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:17:34,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:17:34,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:17:34,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:17:34,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:17:34,506 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:17:34,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:17:34,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:17:35,230 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:17:35,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35 WrapperNode [2021-11-12 23:17:35,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:17:35,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:17:35,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:17:35,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:17:35,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:17:35,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:17:35,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:17:35,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:17:35,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:17:35,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:17:35,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:17:35,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:17:35,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (1/1) ... [2021-11-12 23:17:35,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:17:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:17:35,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:17:35,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:17:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:17:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:17:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:17:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:17:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:17:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:17:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:17:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 23:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 23:17:35,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:17:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:17:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:17:35,830 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:17:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:17:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-12 23:17:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-12 23:17:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:17:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-12 23:17:35,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-12 23:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:17:35,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:17:51,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:17:51,830 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:17:51,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:17:51 BoogieIcfgContainer [2021-11-12 23:17:51,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:17:51,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:17:51,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:17:51,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:17:51,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:17:30" (1/3) ... [2021-11-12 23:17:51,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d5de42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:17:51, skipping insertion in model container [2021-11-12 23:17:51,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:17:35" (2/3) ... [2021-11-12 23:17:51,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d5de42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:17:51, skipping insertion in model container [2021-11-12 23:17:51,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:17:51" (3/3) ... [2021-11-12 23:17:51,851 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness-1.i [2021-11-12 23:17:51,860 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:17:51,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:17:51,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:17:51,936 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 [2021-11-12 23:17:51,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:17:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-12 23:17:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:17:51,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:51,980 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:17:51,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:17:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:51,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1074851773, now seen corresponding path program 1 times [2021-11-12 23:17:52,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:52,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063864737] [2021-11-12 23:17:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:52,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:52,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:52,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:17:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:17:56,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:17:56,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:17:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:17:57,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:17:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:17:57,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:17:57,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063864737] [2021-11-12 23:17:57,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063864737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:17:57,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:17:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:17:57,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758837014] [2021-11-12 23:17:57,488 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:17:57,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:17:57,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:17:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:17:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:17:57,547 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:17:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:17:57,612 INFO L93 Difference]: Finished difference Result 171 states and 245 transitions. [2021-11-12 23:17:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:17:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2021-11-12 23:17:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:17:57,639 INFO L225 Difference]: With dead ends: 171 [2021-11-12 23:17:57,639 INFO L226 Difference]: Without dead ends: 82 [2021-11-12 23:17:57,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:17:57,652 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:17:57,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:17:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-12 23:17:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-11-12 23:17:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-12 23:17:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2021-11-12 23:17:57,735 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2021-11-12 23:17:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:17:57,736 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2021-11-12 23:17:57,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:17:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2021-11-12 23:17:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:17:57,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:17:57,742 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:17:57,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:17:57,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:17:57,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:17:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:17:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 401511231, now seen corresponding path program 1 times [2021-11-12 23:17:57,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:17:57,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085275829] [2021-11-12 23:17:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:17:57,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:17:57,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:17:57,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:17:57,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:18:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:02,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:18:02,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:18:04,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:18:05,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:05,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085275829] [2021-11-12 23:18:05,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085275829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:18:05,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1511590205] [2021-11-12 23:18:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:05,564 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:05,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:05,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:05,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-12 23:18:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:07,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:18:07,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:07,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:08,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1511590205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:08,269 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:18:08,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 8] total 17 [2021-11-12 23:18:08,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875202887] [2021-11-12 23:18:08,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:08,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:18:08,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:18:08,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:18:08,274 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:18:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:08,620 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2021-11-12 23:18:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:18:08,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 65 [2021-11-12 23:18:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:08,626 INFO L225 Difference]: With dead ends: 142 [2021-11-12 23:18:08,626 INFO L226 Difference]: Without dead ends: 107 [2021-11-12 23:18:08,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:18:08,629 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 19 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:08,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 503 Invalid, 53 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 228.54ms Time] [2021-11-12 23:18:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-12 23:18:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 91. [2021-11-12 23:18:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 55 states have internal predecessors, (62), 29 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-12 23:18:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2021-11-12 23:18:08,653 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 65 [2021-11-12 23:18:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:08,654 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2021-11-12 23:18:08,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:18:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2021-11-12 23:18:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 23:18:08,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:08,659 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:18:08,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:08,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:09,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:09,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:18:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 560902053, now seen corresponding path program 1 times [2021-11-12 23:18:09,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:09,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901143910] [2021-11-12 23:18:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:09,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:09,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:09,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:18:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:13,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:18:13,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:13,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:14,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:14,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901143910] [2021-11-12 23:18:14,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901143910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:14,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:14,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:18:14,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028638079] [2021-11-12 23:18:14,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:14,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:18:14,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:14,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:18:14,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:18:14,233 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:18:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:14,503 INFO L93 Difference]: Finished difference Result 113 states and 151 transitions. [2021-11-12 23:18:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2021-11-12 23:18:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:14,509 INFO L225 Difference]: With dead ends: 113 [2021-11-12 23:18:14,509 INFO L226 Difference]: Without dead ends: 111 [2021-11-12 23:18:14,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:18:14,511 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 18 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:14,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 632 Invalid, 57 Unknown, 0 Unchecked, 13.01ms Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 216.40ms Time] [2021-11-12 23:18:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-12 23:18:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2021-11-12 23:18:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 59 states have internal predecessors, (67), 30 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-11-12 23:18:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2021-11-12 23:18:14,532 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 66 [2021-11-12 23:18:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:14,533 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2021-11-12 23:18:14,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:18:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2021-11-12 23:18:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 23:18:14,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:14,559 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:18:14,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:14,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:14,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:18:14,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash 577529309, now seen corresponding path program 1 times [2021-11-12 23:18:14,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:14,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670640879] [2021-11-12 23:18:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:14,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:14,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:14,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:18:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:19,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:18:19,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:19,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:19,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670640879] [2021-11-12 23:18:19,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670640879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:19,911 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:18:19,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:18:19,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195987022] [2021-11-12 23:18:19,912 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:19,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:18:19,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:18:19,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:18:19,914 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-12 23:18:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:19,953 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2021-11-12 23:18:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:18:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 70 [2021-11-12 23:18:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:19,957 INFO L225 Difference]: With dead ends: 117 [2021-11-12 23:18:19,958 INFO L226 Difference]: Without dead ends: 101 [2021-11-12 23:18:19,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:18:19,963 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:19,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 10 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 26.61ms Time] [2021-11-12 23:18:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-12 23:18:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-12 23:18:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 58 states have (on average 1.206896551724138) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (32), 30 states have call predecessors, (32), 29 states have call successors, (32) [2021-11-12 23:18:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-11-12 23:18:19,991 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 70 [2021-11-12 23:18:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:19,992 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-11-12 23:18:19,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-12 23:18:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2021-11-12 23:18:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 23:18:19,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:19,999 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:18:20,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:20,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:20,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:18:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:20,224 INFO L85 PathProgramCache]: Analyzing trace with hash 706612028, now seen corresponding path program 1 times [2021-11-12 23:18:20,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:20,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040436849] [2021-11-12 23:18:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:20,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:20,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:20,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:20,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:18:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:24,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:18:24,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:18:25,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:18:26,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:26,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040436849] [2021-11-12 23:18:26,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040436849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:18:26,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [210828941] [2021-11-12 23:18:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:26,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:26,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:26,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:18:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:35,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:18:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:35,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [210828941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:36,346 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:18:36,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [12, 11] total 18 [2021-11-12 23:18:36,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200080033] [2021-11-12 23:18:36,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:18:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:18:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:18:36,350 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:18:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:36,474 INFO L93 Difference]: Finished difference Result 166 states and 227 transitions. [2021-11-12 23:18:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:18:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2021-11-12 23:18:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:36,479 INFO L225 Difference]: With dead ends: 166 [2021-11-12 23:18:36,479 INFO L226 Difference]: Without dead ends: 134 [2021-11-12 23:18:36,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:18:36,481 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 6 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:36,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 535 Invalid, 31 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 104.12ms Time] [2021-11-12 23:18:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-12 23:18:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-11-12 23:18:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 45 states have call successors, (45), 10 states have call predecessors, (45), 13 states have return successors, (53), 47 states have call predecessors, (53), 44 states have call successors, (53) [2021-11-12 23:18:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 186 transitions. [2021-11-12 23:18:36,506 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 186 transitions. Word has length 70 [2021-11-12 23:18:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:36,506 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 186 transitions. [2021-11-12 23:18:36,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:18:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 186 transitions. [2021-11-12 23:18:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:18:36,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:36,510 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:18:36,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:36,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:36,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:36,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:18:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash -272868544, now seen corresponding path program 1 times [2021-11-12 23:18:36,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:36,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298789201] [2021-11-12 23:18:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:36,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:36,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:36,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:18:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:41,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:18:41,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:18:41,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:18:42,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:18:42,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298789201] [2021-11-12 23:18:42,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298789201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:18:42,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677055026] [2021-11-12 23:18:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:42,861 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:18:42,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:18:42,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:18:42,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:18:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:18:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:52,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-12 23:18:52,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677055026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:18:52,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:18:52,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [12, 11] total 19 [2021-11-12 23:18:52,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065859268] [2021-11-12 23:18:52,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:18:52,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:18:52,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:18:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:18:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:18:52,565 INFO L87 Difference]: Start difference. First operand 132 states and 186 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:18:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:18:52,767 INFO L93 Difference]: Finished difference Result 150 states and 204 transitions. [2021-11-12 23:18:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:18:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2021-11-12 23:18:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:18:52,770 INFO L225 Difference]: With dead ends: 150 [2021-11-12 23:18:52,771 INFO L226 Difference]: Without dead ends: 124 [2021-11-12 23:18:52,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:18:52,773 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 18 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:18:52,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 681 Invalid, 47 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 135.62ms Time] [2021-11-12 23:18:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-12 23:18:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-12 23:18:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (46), 41 states have call predecessors, (46), 38 states have call successors, (46) [2021-11-12 23:18:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 167 transitions. [2021-11-12 23:18:52,793 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 167 transitions. Word has length 71 [2021-11-12 23:18:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:18:52,794 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 167 transitions. [2021-11-12 23:18:52,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:18:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 167 transitions. [2021-11-12 23:18:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:18:52,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:18:52,797 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 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] [2021-11-12 23:18:52,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:18:53,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:18:53,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:18:53,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:18:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:18:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -181852488, now seen corresponding path program 1 times [2021-11-12 23:18:53,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:18:53,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110230985] [2021-11-12 23:18:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:18:53,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:18:53,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:18:53,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:18:53,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:18:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:18:57,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-12 23:18:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:18:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:18:58,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:19:01,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:01,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110230985] [2021-11-12 23:19:01,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110230985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:19:01,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [168610250] [2021-11-12 23:19:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:01,386 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:19:01,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:19:01,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:19:01,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 23:19:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:02,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:19:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 23:19:03,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 23:19:03,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [168610250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:03,506 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:19:03,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [16, 15] total 27 [2021-11-12 23:19:03,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636313579] [2021-11-12 23:19:03,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:03,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:03,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:03,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:19:03,509 INFO L87 Difference]: Start difference. First operand 122 states and 167 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:19:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:03,539 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2021-11-12 23:19:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:03,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 81 [2021-11-12 23:19:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:03,543 INFO L225 Difference]: With dead ends: 161 [2021-11-12 23:19:03,543 INFO L226 Difference]: Without dead ends: 124 [2021-11-12 23:19:03,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:19:03,545 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:03,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 8 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 21.36ms Time] [2021-11-12 23:19:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-12 23:19:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-12 23:19:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 71 states have internal predecessors, (84), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (46), 43 states have call predecessors, (46), 38 states have call successors, (46) [2021-11-12 23:19:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 169 transitions. [2021-11-12 23:19:03,562 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 169 transitions. Word has length 81 [2021-11-12 23:19:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:03,563 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 169 transitions. [2021-11-12 23:19:03,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:19:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 169 transitions. [2021-11-12 23:19:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:19:03,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:03,566 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 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] [2021-11-12 23:19:03,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:03,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:03,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:03,973 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash -343504052, now seen corresponding path program 1 times [2021-11-12 23:19:03,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:03,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236052739] [2021-11-12 23:19:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:03,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:03,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:03,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:19:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:08,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-12 23:19:08,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:19:09,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:19:11,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:11,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236052739] [2021-11-12 23:19:11,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236052739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:19:11,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [117682567] [2021-11-12 23:19:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:11,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:19:11,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:19:11,493 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:19:11,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:19:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:19:20,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 23:19:20,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 23:19:21,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [117682567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:21,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:19:21,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [16, 15] total 32 [2021-11-12 23:19:21,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992958186] [2021-11-12 23:19:21,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:19:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:19:21,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:19:21,546 INFO L87 Difference]: Start difference. First operand 124 states and 169 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 23:19:22,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:22,295 INFO L93 Difference]: Finished difference Result 179 states and 238 transitions. [2021-11-12 23:19:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:19:22,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 82 [2021-11-12 23:19:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:22,298 INFO L225 Difference]: With dead ends: 179 [2021-11-12 23:19:22,298 INFO L226 Difference]: Without dead ends: 132 [2021-11-12 23:19:22,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 23:19:22,301 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 533.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:22,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 859 Invalid, 200 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [13 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 533.08ms Time] [2021-11-12 23:19:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-12 23:19:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2021-11-12 23:19:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (45), 42 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-12 23:19:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2021-11-12 23:19:22,319 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 82 [2021-11-12 23:19:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:22,319 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2021-11-12 23:19:22,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 23:19:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2021-11-12 23:19:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:19:22,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:22,323 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-12 23:19:22,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:22,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:22,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:19:22,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:19:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 90143423, now seen corresponding path program 1 times [2021-11-12 23:19:22,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:22,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923481129] [2021-11-12 23:19:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:22,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:22,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:22,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:22,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d646ad0a-ba54-4138-b77f-251c0e49aa9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process