./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8 --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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:21,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:21,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:21,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:21,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:21,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:21,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:21,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:21,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:21,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:21,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:21,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:21,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:21,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:21,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:21,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:21,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:21,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:21,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:21,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:21,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:21,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:21,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:21,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:21,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:21,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:21,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:21,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:21,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:21,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:21,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:21,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:21,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:21,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:21,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:21,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:21,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:21,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:21,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:21,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:21,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:21,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:09:21,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:21,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:21,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:21,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:21,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:21,519 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:21,519 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:09:21,520 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:21,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:21,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:09:21,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:09:21,522 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:21,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:09:21,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:09:21,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:09:21,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:21,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:09:21,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:21,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:21,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:21,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:21,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:21,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:21,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:21,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:21,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:21,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:21,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:21,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:21,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:21,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:21,529 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:09:21,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:09:21,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:21,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:21,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:21,531 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-07 01:09:21,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:21,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:21,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:21,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:21,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:21,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-07 01:09:21,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/abbad38fb/3b4426f5c08d4d50a7fc1061f9c6ea5b/FLAG9a5cd4d60 [2021-11-07 01:09:22,843 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:22,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-07 01:09:22,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/abbad38fb/3b4426f5c08d4d50a7fc1061f9c6ea5b/FLAG9a5cd4d60 [2021-11-07 01:09:23,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/abbad38fb/3b4426f5c08d4d50a7fc1061f9c6ea5b [2021-11-07 01:09:23,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:23,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:23,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:23,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:23,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:23,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:23" (1/1) ... [2021-11-07 01:09:23,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b78a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:23, skipping insertion in model container [2021-11-07 01:09:23,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:23" (1/1) ... [2021-11-07 01:09:23,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:23,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:23,742 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-07 01:09:23,751 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-07 01:09:23,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:09:23,804 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:09:24,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,809 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:24,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:25,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:09:25,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:09:25,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:09:25,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:09:25,301 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:09:25,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:09:25,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:09:25,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:09:25,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:09:25,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:09:25,586 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:09:25,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:25,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:25,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:25,917 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) [2021-11-07 01:09:25,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@136b287b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:25, skipping insertion in model container [2021-11-07 01:09:25,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:25,918 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:09:25,920 INFO L168 Benchmark]: Toolchain (without parser) took 2619.44 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 76.8 MB in the beginning and 85.7 MB in the end (delta: -8.8 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:25,921 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:25,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2613.81 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 76.7 MB in the beginning and 85.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:25,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2613.81 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 76.7 MB in the beginning and 85.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8 --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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:28,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:28,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:28,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:28,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:28,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:28,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:28,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:28,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:28,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:28,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:28,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:28,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:28,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:28,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:28,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:28,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:28,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:28,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:28,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:28,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:28,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:28,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:28,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:28,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:28,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:28,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:28,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:28,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:28,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:28,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:28,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:28,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:28,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:28,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:28,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:28,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:28,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:28,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:28,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:28,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:28,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:09:28,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:28,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:28,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:28,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:28,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:28,351 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:28,352 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:28,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:28,352 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:28,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:28,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:28,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:28,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:28,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:28,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:28,356 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:09:28,356 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:09:28,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:28,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:28,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:28,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:28,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:09:28,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:28,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:28,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:28,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:28,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:28,358 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:09:28,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:28,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:28,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:28,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:28,360 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-07 01:09:28,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:28,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:28,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:28,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:28,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:28,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-07 01:09:28,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/b8ddf1848/6dee733767f54225b2e222888ae20535/FLAG6d7c55df7 [2021-11-07 01:09:29,693 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:29,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-07 01:09:29,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/b8ddf1848/6dee733767f54225b2e222888ae20535/FLAG6d7c55df7 [2021-11-07 01:09:30,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/data/b8ddf1848/6dee733767f54225b2e222888ae20535 [2021-11-07 01:09:30,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:30,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:30,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:30,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:30,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:30,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:30" (1/1) ... [2021-11-07 01:09:30,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2b3743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:30, skipping insertion in model container [2021-11-07 01:09:30,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:30" (1/1) ... [2021-11-07 01:09:30,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:30,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:30,693 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-07 01:09:30,702 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-07 01:09:30,739 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:09:30,757 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:09:31,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:31,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:32,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:09:32,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:09:32,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:09:32,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:09:32,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:09:32,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:09:32,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:09:32,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:09:32,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:09:32,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:09:32,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:09:32,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:32,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:32,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:33,029 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:09:33,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:33,111 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-07 01:09:33,111 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-07 01:09:33,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:09:33,114 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:09:33,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:09:33,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:09:33,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:09:33,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:09:33,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:09:33,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:09:33,223 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:09:33,223 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:09:33,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:09:33,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:09:33,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:09:33,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:33,398 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:09:33,410 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-07 01:09:33,411 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_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-07 01:09:33,413 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:09:33,413 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:09:33,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:09:33,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:09:33,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:09:33,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:09:33,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:09:33,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:09:33,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:09:33,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:09:33,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:09:33,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:09:33,531 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:09:33,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:09:33,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:34,122 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:09:34,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34 WrapperNode [2021-11-07 01:09:34,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:34,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:34,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:09:34,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:09:34,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:34,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:09:34,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:09:34,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:09:34,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:09:34,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:09:34,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:09:34,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:09:34,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:34,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:34,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:09:34,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:09:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:09:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:09:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:09:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:09:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:09:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:09:49,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:09:49,533 INFO L299 CfgBuilder]: Removed 80 assume(true) statements. [2021-11-07 01:09:49,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:09:49 BoogieIcfgContainer [2021-11-07 01:09:49,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:09:49,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:09:49,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:09:49,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:09:49,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:09:30" (1/3) ... [2021-11-07 01:09:49,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1789823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:09:49, skipping insertion in model container [2021-11-07 01:09:49,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (2/3) ... [2021-11-07 01:09:49,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1789823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:09:49, skipping insertion in model container [2021-11-07 01:09:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:09:49" (3/3) ... [2021-11-07 01:09:49,546 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-11-07 01:09:49,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:09:49,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:09:49,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:09:49,633 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 [2021-11-07 01:09:49,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:09:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 129 states have (on average 1.441860465116279) internal successors, (186), 134 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:09:49,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:49,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:49,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:09:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -33682430, now seen corresponding path program 1 times [2021-11-07 01:09:49,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:49,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688535105] [2021-11-07 01:09:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:49,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:49,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:49,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:09:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:09:54,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:54,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:54,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:54,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688535105] [2021-11-07 01:09:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688535105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:54,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:09:54,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020659577] [2021-11-07 01:09:54,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:09:54,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:09:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:09:54,349 INFO L87 Difference]: Start difference. First operand has 135 states, 129 states have (on average 1.441860465116279) internal successors, (186), 134 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:54,377 INFO L93 Difference]: Finished difference Result 264 states and 364 transitions. [2021-11-07 01:09:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:09:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:09:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:54,388 INFO L225 Difference]: With dead ends: 264 [2021-11-07 01:09:54,388 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 01:09:54,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:09:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 01:09:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-07 01:09:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.328) internal successors, (166), 129 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 166 transitions. [2021-11-07 01:09:54,436 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 166 transitions. Word has length 36 [2021-11-07 01:09:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 166 transitions. [2021-11-07 01:09:54,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 166 transitions. [2021-11-07 01:09:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:09:54,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:54,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:54,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:54,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:54,661 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:09:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 611425668, now seen corresponding path program 1 times [2021-11-07 01:09:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850026390] [2021-11-07 01:09:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:54,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:54,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:54,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:54,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:09:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:59,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:09:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:59,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:09:59,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:59,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850026390] [2021-11-07 01:09:59,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850026390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:59,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:59,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:09:59,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55278001] [2021-11-07 01:09:59,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:09:59,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:09:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:59,476 INFO L87 Difference]: Start difference. First operand 130 states and 166 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:59,677 INFO L93 Difference]: Finished difference Result 219 states and 281 transitions. [2021-11-07 01:09:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:09:59,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:09:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:59,682 INFO L225 Difference]: With dead ends: 219 [2021-11-07 01:09:59,683 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 01:09:59,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:09:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 01:09:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-07 01:09:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.312) internal successors, (164), 129 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 164 transitions. [2021-11-07 01:09:59,714 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 164 transitions. Word has length 36 [2021-11-07 01:09:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:59,715 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 164 transitions. [2021-11-07 01:09:59,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 164 transitions. [2021-11-07 01:09:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:09:59,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:59,718 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:59,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:59,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:59,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:09:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2037255033, now seen corresponding path program 1 times [2021-11-07 01:09:59,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:59,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691504052] [2021-11-07 01:09:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:59,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:59,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:59,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:59,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:10:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:04,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:10:04,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:04,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:10:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:04,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:05,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-07 01:10:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:05,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:05,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691504052] [2021-11-07 01:10:05,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691504052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:05,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:05,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 01:10:05,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877894756] [2021-11-07 01:10:05,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:10:05,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:05,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:10:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:10:05,522 INFO L87 Difference]: Start difference. First operand 130 states and 164 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:13,594 INFO L93 Difference]: Finished difference Result 269 states and 340 transitions. [2021-11-07 01:10:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:10:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 01:10:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:13,598 INFO L225 Difference]: With dead ends: 269 [2021-11-07 01:10:13,598 INFO L226 Difference]: Without dead ends: 179 [2021-11-07 01:10:13,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:10:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-07 01:10:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 132. [2021-11-07 01:10:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.2913385826771653) internal successors, (164), 131 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2021-11-07 01:10:13,616 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 42 [2021-11-07 01:10:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:13,616 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2021-11-07 01:10:13,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2021-11-07 01:10:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:10:13,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:13,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:13,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:13,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:13,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash 730955249, now seen corresponding path program 1 times [2021-11-07 01:10:13,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:13,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374586019] [2021-11-07 01:10:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:13,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:13,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:13,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:10:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:18,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:10:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:18,659 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:10:18,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:10:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:18,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:19,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:19,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374586019] [2021-11-07 01:10:19,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374586019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:19,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:10:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893316662] [2021-11-07 01:10:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:10:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:10:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:10:19,288 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:23,670 INFO L93 Difference]: Finished difference Result 351 states and 440 transitions. [2021-11-07 01:10:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:10:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:10:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:23,674 INFO L225 Difference]: With dead ends: 351 [2021-11-07 01:10:23,674 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 01:10:23,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:10:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 01:10:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 149. [2021-11-07 01:10:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 148 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 185 transitions. [2021-11-07 01:10:23,696 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 185 transitions. Word has length 46 [2021-11-07 01:10:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:23,696 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 185 transitions. [2021-11-07 01:10:23,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 185 transitions. [2021-11-07 01:10:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:10:23,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:23,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:23,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:23,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 871503859, now seen corresponding path program 1 times [2021-11-07 01:10:23,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:23,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931329650] [2021-11-07 01:10:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:23,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:23,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:23,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:10:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:10:28,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:28,663 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:10:28,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:10:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:29,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:29,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:29,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931329650] [2021-11-07 01:10:29,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931329650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:29,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:29,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 01:10:29,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198349256] [2021-11-07 01:10:29,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:10:29,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:10:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:10:29,696 INFO L87 Difference]: Start difference. First operand 149 states and 185 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:38,116 INFO L93 Difference]: Finished difference Result 430 states and 522 transitions. [2021-11-07 01:10:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:10:38,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:10:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:38,123 INFO L225 Difference]: With dead ends: 430 [2021-11-07 01:10:38,123 INFO L226 Difference]: Without dead ends: 301 [2021-11-07 01:10:38,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:10:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-07 01:10:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 148. [2021-11-07 01:10:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.2587412587412588) internal successors, (180), 147 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2021-11-07 01:10:38,137 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 46 [2021-11-07 01:10:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2021-11-07 01:10:38,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2021-11-07 01:10:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:10:38,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:38,148 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:38,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:38,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:38,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1213138712, now seen corresponding path program 1 times [2021-11-07 01:10:38,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:38,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729329045] [2021-11-07 01:10:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:38,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:38,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:38,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:10:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:42,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:42,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:42,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:42,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:42,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729329045] [2021-11-07 01:10:42,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729329045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:42,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:42,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:10:42,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652885744] [2021-11-07 01:10:42,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:42,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:42,970 INFO L87 Difference]: Start difference. First operand 148 states and 180 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:43,151 INFO L93 Difference]: Finished difference Result 286 states and 345 transitions. [2021-11-07 01:10:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:10:43,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:10:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:43,153 INFO L225 Difference]: With dead ends: 286 [2021-11-07 01:10:43,153 INFO L226 Difference]: Without dead ends: 170 [2021-11-07 01:10:43,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-07 01:10:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 146. [2021-11-07 01:10:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 145 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions. [2021-11-07 01:10:43,163 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 48 [2021-11-07 01:10:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:43,163 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 174 transitions. [2021-11-07 01:10:43,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions. [2021-11-07 01:10:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:10:43,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:43,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:43,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:43,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:43,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1190506458, now seen corresponding path program 1 times [2021-11-07 01:10:43,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:43,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537049229] [2021-11-07 01:10:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:43,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:43,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:43,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:43,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:10:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:47,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:10:47,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:48,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:48,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:48,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537049229] [2021-11-07 01:10:48,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537049229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:48,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:48,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 01:10:48,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282320980] [2021-11-07 01:10:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:10:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:10:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:10:48,329 INFO L87 Difference]: Start difference. First operand 146 states and 174 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:48,896 INFO L93 Difference]: Finished difference Result 309 states and 372 transitions. [2021-11-07 01:10:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:10:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:10:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:48,901 INFO L225 Difference]: With dead ends: 309 [2021-11-07 01:10:48,902 INFO L226 Difference]: Without dead ends: 245 [2021-11-07 01:10:48,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:10:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-07 01:10:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 185. [2021-11-07 01:10:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.238888888888889) internal successors, (223), 184 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2021-11-07 01:10:48,913 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 48 [2021-11-07 01:10:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:48,914 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2021-11-07 01:10:48,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2021-11-07 01:10:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:10:48,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:48,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:48,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:49,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:49,129 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1824597160, now seen corresponding path program 1 times [2021-11-07 01:10:49,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:49,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305466091] [2021-11-07 01:10:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:49,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:49,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:49,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:10:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:53,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:53,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:54,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:54,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:54,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305466091] [2021-11-07 01:10:54,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305466091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:54,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:54,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:10:54,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524753906] [2021-11-07 01:10:54,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:54,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:54,817 INFO L87 Difference]: Start difference. First operand 185 states and 223 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:54,925 INFO L93 Difference]: Finished difference Result 380 states and 458 transitions. [2021-11-07 01:10:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:10:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:54,928 INFO L225 Difference]: With dead ends: 380 [2021-11-07 01:10:54,928 INFO L226 Difference]: Without dead ends: 329 [2021-11-07 01:10:54,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-07 01:10:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 303. [2021-11-07 01:10:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 298 states have (on average 1.238255033557047) internal successors, (369), 302 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 369 transitions. [2021-11-07 01:10:54,949 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 369 transitions. Word has length 48 [2021-11-07 01:10:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:54,949 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 369 transitions. [2021-11-07 01:10:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 369 transitions. [2021-11-07 01:10:54,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:10:54,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:54,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:55,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:55,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:55,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:10:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash -165700596, now seen corresponding path program 1 times [2021-11-07 01:10:55,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:55,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886048087] [2021-11-07 01:10:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:55,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:55,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:55,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:10:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:59,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:10:59,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:59,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:00,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:00,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886048087] [2021-11-07 01:11:00,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886048087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:00,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:00,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-07 01:11:00,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866280927] [2021-11-07 01:11:00,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:11:00,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:11:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:11:00,200 INFO L87 Difference]: Start difference. First operand 303 states and 369 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:00,497 INFO L93 Difference]: Finished difference Result 329 states and 399 transitions. [2021-11-07 01:11:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:11:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:11:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:00,499 INFO L225 Difference]: With dead ends: 329 [2021-11-07 01:11:00,499 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 01:11:00,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:11:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 01:11:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 01:11:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.2244897959183674) internal successors, (180), 147 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2021-11-07 01:11:00,507 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 59 [2021-11-07 01:11:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:00,507 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2021-11-07 01:11:00,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2021-11-07 01:11:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:11:00,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:00,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:00,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:00,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash -396209395, now seen corresponding path program 1 times [2021-11-07 01:11:00,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:00,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124619628] [2021-11-07 01:11:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:00,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:00,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:00,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9186aa-b6f8-4164-ab82-0a988f8f0ad9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:11:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:05,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:11:05,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:06,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:17,464 WARN L207 SmtUtils]: Spent 10.16 s on a formula simplification. DAG size of input: 526 DAG size of output: 272 [2021-11-07 01:11:17,468 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-07 01:11:17,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771