./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:14,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:14,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:14,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:14,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:14,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:14,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:14,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:14,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:14,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:14,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:14,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:14,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:14,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:14,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:14,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:14,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:14,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:14,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:14,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:14,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:14,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:14,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:14,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:14,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:14,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:14,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:14,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:14,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:14,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:14,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:14,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:14,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:14,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:14,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:14,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:14,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:14,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:14,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:14,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:14,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:14,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:00:14,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:14,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:14,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:14,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:14,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:14,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:14,573 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:14,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:00:14,579 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:14,580 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:14,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:00:14,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:00:14,581 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:14,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:00:14,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:00:14,582 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:00:14,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:14,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:14,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:14,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:00:14,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:14,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:00:14,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:14,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:00:14,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:14,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:00:14,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:14,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:14,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:14,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:14,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:14,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:00:14,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:00:14,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:00:14,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:00:14,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:14,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:14,589 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_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-19 14:00:14,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:14,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:14,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:14,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:14,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:14,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-19 14:00:15,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/2494b7e71/253f967bad024ac0addc76b7b3a49612/FLAG91ff94f63 [2021-11-19 14:00:15,876 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:15,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-19 14:00:15,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/2494b7e71/253f967bad024ac0addc76b7b3a49612/FLAG91ff94f63 [2021-11-19 14:00:16,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/2494b7e71/253f967bad024ac0addc76b7b3a49612 [2021-11-19 14:00:16,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:16,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:16,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:16,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:16,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:16,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:16" (1/1) ... [2021-11-19 14:00:16,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a86198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:16, skipping insertion in model container [2021-11-19 14:00:16,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:16" (1/1) ... [2021-11-19 14:00:16,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:16,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:16,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-19 14:00:16,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-19 14:00:16,859 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:00:16,866 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:00:17,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,873 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,873 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,874 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,876 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,893 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,896 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:17,897 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:18,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:00:18,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:00:18,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:00:18,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:00:18,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:00:18,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:00:18,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:00:18,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:00:18,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:00:18,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:00:18,575 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:00:18,772 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:18,773 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:18,841 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:18,901 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:00:18,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a01e7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:18, skipping insertion in model container [2021-11-19 14:00:18,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:18,903 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:00:18,905 INFO L158 Benchmark]: Toolchain (without parser) took 2512.30ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 68.6MB in the beginning and 87.3MB in the end (delta: -18.7MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2021-11-19 14:00:18,906 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:18,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2509.45ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 87.3MB in the end (delta: -19.0MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2021-11-19 14:00:18,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2509.45ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 87.3MB in the end (delta: -19.0MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:21,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:21,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:21,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:21,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:21,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:21,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:21,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:21,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:21,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:21,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:21,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:21,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:21,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:21,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:21,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:21,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:21,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:21,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:21,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:21,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:21,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:21,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:21,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:21,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:21,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:21,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:21,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:21,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:21,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:21,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:21,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:21,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:21,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:21,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:21,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:21,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:21,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:21,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:21,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:21,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:21,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:00:21,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:21,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:21,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:21,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:21,373 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:21,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:21,374 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:21,374 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:21,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:21,374 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:21,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:21,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:21,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:00:21,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:21,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:00:21,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:00:21,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:00:21,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:00:21,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:00:21,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:21,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:00:21,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:21,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:00:21,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:21,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:21,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:21,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:21,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:00:21,381 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:00:21,381 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:00:21,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:00:21,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:21,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:21,382 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_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-19 14:00:21,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:21,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:21,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:21,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:21,828 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:21,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-19 14:00:21,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/f9611f0c4/8c292ffd737e4463ae77e7cf5f988a3a/FLAG8bd5df458 [2021-11-19 14:00:22,996 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:22,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-19 14:00:23,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/f9611f0c4/8c292ffd737e4463ae77e7cf5f988a3a/FLAG8bd5df458 [2021-11-19 14:00:23,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/data/f9611f0c4/8c292ffd737e4463ae77e7cf5f988a3a [2021-11-19 14:00:23,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:23,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:23,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:23,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:23,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:23,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:23" (1/1) ... [2021-11-19 14:00:23,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec5ae59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:23, skipping insertion in model container [2021-11-19 14:00:23,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:23" (1/1) ... [2021-11-19 14:00:23,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:23,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:23,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-19 14:00:23,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-19 14:00:23,506 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:00:23,513 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:00:24,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,538 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,539 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,540 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,564 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,564 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,566 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:24,567 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:00:25,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:00:25,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:00:25,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:00:25,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:00:25,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:00:25,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:00:25,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:00:25,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:00:25,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:00:25,206 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:00:25,321 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,322 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,413 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:25,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:00:25,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:25,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-19 14:00:25,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-19 14:00:25,541 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:00:25,542 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:00:25,577 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,577 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,578 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,578 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,579 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,587 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,587 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:00:25,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:00:25,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:00:25,652 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:00:25,653 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:00:25,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:00:25,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:00:25,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:00:25,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:00:25,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:00:25,682 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:00:25,753 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,754 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,800 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:25,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:00:25,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-19 14:00:25,916 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-19 14:00:25,917 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:00:25,918 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:00:25,975 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,977 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,977 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:25,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:26,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:00:26,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:00:26,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:00:26,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:00:26,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:00:26,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:00:26,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:00:26,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:00:26,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:00:26,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:00:26,083 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:00:26,162 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:26,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:00:26,195 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:26,658 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:00:26,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26 WrapperNode [2021-11-19 14:00:26,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:26,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:26,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:00:26,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:00:26,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,922 INFO L137 Inliner]: procedures = 713, calls = 2651, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 824 [2021-11-19 14:00:26,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:26,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:00:26,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:00:26,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:00:26,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:26,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:27,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:27,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:27,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:00:27,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:00:27,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:00:27,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:00:27,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (1/1) ... [2021-11-19 14:00:27,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:27,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:00:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:00:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 14:00:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 14:00:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:00:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:00:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:00:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:00:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:00:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-19 14:00:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-19 14:00:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:00:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:00:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:00:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:00:27,159 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-19 14:00:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-19 14:00:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:00:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:00:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:00:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:00:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:00:27,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:00:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:00:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:00:27,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:00:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:00:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:00:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-19 14:00:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-19 14:00:27,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2021-11-19 14:00:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2021-11-19 14:00:27,492 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:00:27,494 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:00:30,058 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:00:30,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:00:30,076 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:00:30,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:30 BoogieIcfgContainer [2021-11-19 14:00:30,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:00:30,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:00:30,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:00:30,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:00:30,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:23" (1/3) ... [2021-11-19 14:00:30,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f08513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:30, skipping insertion in model container [2021-11-19 14:00:30,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:26" (2/3) ... [2021-11-19 14:00:30,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f08513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:30, skipping insertion in model container [2021-11-19 14:00:30,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:30" (3/3) ... [2021-11-19 14:00:30,097 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2021-11-19 14:00:30,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:00:30,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:00:30,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:00:30,177 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:00:30,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:00:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-19 14:00:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:00:30,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:30,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:30,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash -980626028, now seen corresponding path program 1 times [2021-11-19 14:00:30,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:30,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53832193] [2021-11-19 14:00:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:30,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:30,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:30,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:30,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:00:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:31,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:00:31,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:00:31,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:00:31,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:31,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53832193] [2021-11-19 14:00:31,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53832193] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:31,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:31,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:00:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456543533] [2021-11-19 14:00:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:31,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:00:31,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:00:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:31,845 INFO L87 Difference]: Start difference. First operand has 131 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:00:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:31,887 INFO L93 Difference]: Finished difference Result 258 states and 383 transitions. [2021-11-19 14:00:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:00:31,890 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2021-11-19 14:00:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:31,901 INFO L225 Difference]: With dead ends: 258 [2021-11-19 14:00:31,901 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 14:00:31,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:31,910 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:31,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 14:00:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-19 14:00:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 74 states have internal predecessors, (90), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 14:00:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2021-11-19 14:00:31,965 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 95 [2021-11-19 14:00:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:31,967 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2021-11-19 14:00:31,967 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:00:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2021-11-19 14:00:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 14:00:31,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:31,973 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:32,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:32,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:32,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 112336798, now seen corresponding path program 1 times [2021-11-19 14:00:32,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:32,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134684519] [2021-11-19 14:00:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:32,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:32,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:32,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:00:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:33,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:00:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:00:33,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-19 14:00:34,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:34,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134684519] [2021-11-19 14:00:34,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134684519] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:34,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:34,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:00:34,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822946994] [2021-11-19 14:00:34,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:34,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:00:34,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:00:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:00:34,023 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:00:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:34,643 INFO L93 Difference]: Finished difference Result 246 states and 343 transitions. [2021-11-19 14:00:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:34,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2021-11-19 14:00:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:34,648 INFO L225 Difference]: With dead ends: 246 [2021-11-19 14:00:34,649 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:00:34,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:00:34,652 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 34 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:34,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 553 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:00:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:00:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:00:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-19 14:00:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 181 transitions. [2021-11-19 14:00:34,700 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 181 transitions. Word has length 95 [2021-11-19 14:00:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:34,701 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 181 transitions. [2021-11-19 14:00:34,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:00:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 181 transitions. [2021-11-19 14:00:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 14:00:34,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:34,711 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:34,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:34,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1452584935, now seen corresponding path program 1 times [2021-11-19 14:00:34,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:34,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558883932] [2021-11-19 14:00:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:34,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:34,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:35,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:00:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:36,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:00:36,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 14:00:36,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-19 14:00:36,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:36,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558883932] [2021-11-19 14:00:36,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558883932] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:36,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:36,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-19 14:00:36,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248964640] [2021-11-19 14:00:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:36,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:36,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:36,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:36,702 INFO L87 Difference]: Start difference. First operand 128 states and 181 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:00:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:37,425 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-11-19 14:00:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2021-11-19 14:00:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:37,429 INFO L225 Difference]: With dead ends: 206 [2021-11-19 14:00:37,430 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:00:37,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:37,432 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 66 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:37,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:00:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:00:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:00:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-19 14:00:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 178 transitions. [2021-11-19 14:00:37,452 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 178 transitions. Word has length 97 [2021-11-19 14:00:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:37,452 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 178 transitions. [2021-11-19 14:00:37,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:00:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 178 transitions. [2021-11-19 14:00:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:00:37,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:37,455 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:37,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:37,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:37,673 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2014938503, now seen corresponding path program 2 times [2021-11-19 14:00:37,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:37,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271429480] [2021-11-19 14:00:37,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:00:37,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:37,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:37,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:37,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:38,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:00:38,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:00:38,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:00:38,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 14:00:38,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 14:00:39,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:39,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271429480] [2021-11-19 14:00:39,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271429480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:39,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:39,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-19 14:00:39,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122986328] [2021-11-19 14:00:39,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:39,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:00:39,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:00:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:00:39,035 INFO L87 Difference]: Start difference. First operand 128 states and 178 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 14:00:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:39,210 INFO L93 Difference]: Finished difference Result 140 states and 199 transitions. [2021-11-19 14:00:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:00:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2021-11-19 14:00:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:39,215 INFO L225 Difference]: With dead ends: 140 [2021-11-19 14:00:39,215 INFO L226 Difference]: Without dead ends: 138 [2021-11-19 14:00:39,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:00:39,218 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 19 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:39,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1524 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:00:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-19 14:00:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-11-19 14:00:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 84 states have internal predecessors, (98), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (56), 41 states have call predecessors, (56), 41 states have call successors, (56) [2021-11-19 14:00:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 196 transitions. [2021-11-19 14:00:39,241 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 196 transitions. Word has length 101 [2021-11-19 14:00:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:39,242 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 196 transitions. [2021-11-19 14:00:39,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 14:00:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 196 transitions. [2021-11-19 14:00:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:00:39,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:39,245 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:39,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:39,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:39,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash 652934531, now seen corresponding path program 1 times [2021-11-19 14:00:39,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:39,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906726961] [2021-11-19 14:00:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:39,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:39,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:39,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:39,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:00:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:00:40,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:00:41,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-19 14:00:41,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:41,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906726961] [2021-11-19 14:00:41,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906726961] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:41,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:41,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-19 14:00:41,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273853794] [2021-11-19 14:00:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:41,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:41,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:00:41,359 INFO L87 Difference]: Start difference. First operand 137 states and 196 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:00:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:41,981 INFO L93 Difference]: Finished difference Result 268 states and 400 transitions. [2021-11-19 14:00:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 101 [2021-11-19 14:00:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:41,988 INFO L225 Difference]: With dead ends: 268 [2021-11-19 14:00:41,988 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 14:00:41,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:41,990 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 65 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:41,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 778 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:00:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 14:00:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-19 14:00:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 95 states have (on average 1.231578947368421) internal successors, (117), 98 states have internal predecessors, (117), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (74), 55 states have call predecessors, (74), 55 states have call successors, (74) [2021-11-19 14:00:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 247 transitions. [2021-11-19 14:00:42,059 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 247 transitions. Word has length 101 [2021-11-19 14:00:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:42,060 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 247 transitions. [2021-11-19 14:00:42,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:00:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 247 transitions. [2021-11-19 14:00:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 14:00:42,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:42,062 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:42,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:42,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:42,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2079948158, now seen corresponding path program 1 times [2021-11-19 14:00:42,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:42,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324326201] [2021-11-19 14:00:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:42,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:42,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:42,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:42,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:00:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:43,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 14:00:43,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:43,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:00:44,297 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 25 treesize of output 21 [2021-11-19 14:00:44,302 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 21 treesize of output 13 [2021-11-19 14:00:47,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:00:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 51 [2021-11-19 14:00:47,607 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 51 treesize of output 43 [2021-11-19 14:00:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:00:47,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-19 14:00:52,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:52,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324326201] [2021-11-19 14:00:52,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324326201] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:52,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:52,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2021-11-19 14:00:52,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507524540] [2021-11-19 14:00:52,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:52,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:00:52,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:00:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:00:52,842 INFO L87 Difference]: Start difference. First operand 166 states and 247 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-19 14:00:59,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:59,030 INFO L93 Difference]: Finished difference Result 408 states and 641 transitions. [2021-11-19 14:00:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:00:59,030 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 103 [2021-11-19 14:00:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:59,035 INFO L225 Difference]: With dead ends: 408 [2021-11-19 14:00:59,035 INFO L226 Difference]: Without dead ends: 301 [2021-11-19 14:00:59,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 174 SyntacticMatches, 13 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 14:00:59,038 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 156 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 982 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:59,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 914 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1177 Invalid, 0 Unknown, 982 Unchecked, 3.9s Time] [2021-11-19 14:00:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-19 14:00:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 275. [2021-11-19 14:00:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.232258064516129) internal successors, (191), 159 states have internal predecessors, (191), 96 states have call successors, (96), 18 states have call predecessors, (96), 23 states have return successors, (138), 97 states have call predecessors, (138), 95 states have call successors, (138) [2021-11-19 14:00:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 425 transitions. [2021-11-19 14:00:59,088 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 425 transitions. Word has length 103 [2021-11-19 14:00:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:59,089 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 425 transitions. [2021-11-19 14:00:59,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-19 14:00:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 425 transitions. [2021-11-19 14:00:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:00:59,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:59,092 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:59,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:59,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:59,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2083688785, now seen corresponding path program 1 times [2021-11-19 14:00:59,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:59,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876537253] [2021-11-19 14:00:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:59,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:59,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:59,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:01:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:00,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:01:00,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:00,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:01:00,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:01:01,155 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 49 treesize of output 45 [2021-11-19 14:01:01,160 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 45 treesize of output 41 [2021-11-19 14:01:01,164 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 41 treesize of output 33 [2021-11-19 14:01:01,168 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 30 treesize of output 22 [2021-11-19 14:01:01,342 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 37 treesize of output 25 [2021-11-19 14:01:01,346 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 22 treesize of output 10 [2021-11-19 14:01:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 14:01:01,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:04,896 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 38 treesize of output 32 [2021-11-19 14:01:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:01:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:01:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 14:01:04,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:04,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876537253] [2021-11-19 14:01:04,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876537253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:04,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598184197] [2021-11-19 14:01:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:04,993 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:04,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:04,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:04,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:01:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:10,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-19 14:01:11,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-19 14:01:11,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1598184197] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:11,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:01:11,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 11, 8] total 26 [2021-11-19 14:01:11,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108817580] [2021-11-19 14:01:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:11,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:11,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=589, Unknown=1, NotChecked=0, Total=650 [2021-11-19 14:01:11,801 INFO L87 Difference]: Start difference. First operand 275 states and 425 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 14:01:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:12,026 INFO L93 Difference]: Finished difference Result 289 states and 442 transitions. [2021-11-19 14:01:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 110 [2021-11-19 14:01:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:12,033 INFO L225 Difference]: With dead ends: 289 [2021-11-19 14:01:12,033 INFO L226 Difference]: Without dead ends: 287 [2021-11-19 14:01:12,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 407 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=68, Invalid=687, Unknown=1, NotChecked=0, Total=756 [2021-11-19 14:01:12,037 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 15 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:12,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1165 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:01:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-19 14:01:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2021-11-19 14:01:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 158 states have (on average 1.2278481012658229) internal successors, (194), 162 states have internal predecessors, (194), 100 states have call successors, (100), 19 states have call predecessors, (100), 24 states have return successors, (142), 101 states have call predecessors, (142), 99 states have call successors, (142) [2021-11-19 14:01:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 436 transitions. [2021-11-19 14:01:12,102 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 436 transitions. Word has length 110 [2021-11-19 14:01:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:12,104 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 436 transitions. [2021-11-19 14:01:12,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-19 14:01:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 436 transitions. [2021-11-19 14:01:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 14:01:12,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:12,109 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:12,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:12,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:12,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:12,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:12,531 INFO L85 PathProgramCache]: Analyzing trace with hash -386377457, now seen corresponding path program 1 times [2021-11-19 14:01:12,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:12,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842981295] [2021-11-19 14:01:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:12,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:12,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:12,534 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:12,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:01:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:13,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:01:13,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:13,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:01:13,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:01:14,505 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 49 treesize of output 45 [2021-11-19 14:01:14,511 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 45 treesize of output 41 [2021-11-19 14:01:14,516 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 41 treesize of output 33 [2021-11-19 14:01:14,520 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 30 treesize of output 22 [2021-11-19 14:01:14,676 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 37 treesize of output 25 [2021-11-19 14:01:14,680 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 22 treesize of output 10 [2021-11-19 14:01:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-19 14:01:14,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:16,262 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 38 treesize of output 32 [2021-11-19 14:01:16,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:01:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:01:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 14:01:16,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:16,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842981295] [2021-11-19 14:01:16,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842981295] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:01:16,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [651254689] [2021-11-19 14:01:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:16,354 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:01:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:01:16,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:01:16,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e39100-2605-4f6d-900a-b166c6c77118/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:01:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:19,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 14:01:19,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 14:01:24,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:37,180 WARN L227 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:01:37,185 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:01:37,186 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 128 treesize of output 771