./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:22:15,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:22:15,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:22:15,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:22:15,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:22:15,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:22:15,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:22:15,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:22:15,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:22:15,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:22:15,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:22:15,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:22:15,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:22:15,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:22:15,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:22:15,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:22:15,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:22:15,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:22:15,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:22:15,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:22:15,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:22:15,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:22:15,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:22:15,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:22:15,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:22:15,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:22:15,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:22:15,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:22:15,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:22:15,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:22:15,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:22:15,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:22:15,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:22:15,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:22:15,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:22:15,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:22:15,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:22:15,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:22:15,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:22:15,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:22:15,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:22:15,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:22:15,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:22:15,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:22:16,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:22:16,000 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:22:16,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:22:16,001 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:22:16,001 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:22:16,001 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:22:16,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:22:16,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:22:16,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:22:16,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:22:16,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:22:16,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:22:16,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:22:16,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:22:16,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:22:16,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:22:16,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:22:16,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:22:16,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:22:16,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:22:16,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:22:16,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:22:16,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:22:16,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:22:16,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:22:16,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:16,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:22:16,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:22:16,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:22:16,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:22:16,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:22:16,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:22:16,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:22:16,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:22:16,022 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_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-07 01:22:16,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:22:16,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:22:16,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:22:16,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:22:16,450 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:22:16,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-07 01:22:16,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/0560db41f/e64bcec024f94ade880946338ffb5aca/FLAGf77024413 [2021-11-07 01:22:17,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:22:17,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-07 01:22:17,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/0560db41f/e64bcec024f94ade880946338ffb5aca/FLAGf77024413 [2021-11-07 01:22:17,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/0560db41f/e64bcec024f94ade880946338ffb5aca [2021-11-07 01:22:17,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:22:17,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:22:17,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:17,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:22:17,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:22:17,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:17" (1/1) ... [2021-11-07 01:22:17,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3b78ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:17, skipping insertion in model container [2021-11-07 01:22:17,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:17" (1/1) ... [2021-11-07 01:22:17,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:22:18,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:18,396 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-07 01:22:18,405 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-07 01:22:18,434 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:22:18,441 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:22:19,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,512 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:19,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:20,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:22:20,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:22:20,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:22:20,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:22:20,038 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:22:20,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:22:20,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:22:20,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:22:20,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:22:20,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:22:20,284 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:22:20,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:20,414 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:20,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:20,669 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:22:20,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3758064a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:20, skipping insertion in model container [2021-11-07 01:22:20,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:20,671 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:22:20,674 INFO L168 Benchmark]: Toolchain (without parser) took 2733.40 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 83.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:22:20,675 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:22:20,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2727.83 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 83.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:22:20,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 72.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2727.83 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 83.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:22:23,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:22:23,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:22:23,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:22:23,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:22:23,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:22:23,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:22:23,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:22:23,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:22:23,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:22:23,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:22:23,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:22:23,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:22:23,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:22:23,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:22:23,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:22:23,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:22:23,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:22:23,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:22:23,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:22:23,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:22:23,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:22:23,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:22:23,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:22:23,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:22:23,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:22:23,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:22:23,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:22:23,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:22:23,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:22:23,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:22:23,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:22:23,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:22:23,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:22:23,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:22:23,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:22:23,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:22:23,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:22:23,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:22:23,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:22:23,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:22:23,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:22:23,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:22:23,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:22:23,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:22:23,484 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:22:23,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:22:23,485 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:22:23,485 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:22:23,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:22:23,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:22:23,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:22:23,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:22:23,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:22:23,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:22:23,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:22:23,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:22:23,488 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:22:23,488 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:22:23,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:22:23,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:22:23,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:22:23,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:22:23,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:22:23,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:22:23,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:23,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:22:23,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:22:23,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:22:23,491 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:22:23,491 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:23,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:22:23,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:22:23,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:22:23,492 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_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2021-11-07 01:22:23,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:22:23,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:22:23,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:22:23,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:22:23,954 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:22:23,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-07 01:22:24,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/b0d296511/7edb192c22ef4ed9b3296ee532ecb992/FLAG354795dac [2021-11-07 01:22:25,318 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:22:25,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2021-11-07 01:22:25,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/b0d296511/7edb192c22ef4ed9b3296ee532ecb992/FLAG354795dac [2021-11-07 01:22:25,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/data/b0d296511/7edb192c22ef4ed9b3296ee532ecb992 [2021-11-07 01:22:25,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:22:25,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:22:25,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:25,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:22:25,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:22:25,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:25" (1/1) ... [2021-11-07 01:22:25,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa67c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:25, skipping insertion in model container [2021-11-07 01:22:25,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:25" (1/1) ... [2021-11-07 01:22:25,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:22:25,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:26,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-07 01:22:26,186 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-07 01:22:26,226 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:22:26,241 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:22:27,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,870 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,870 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,872 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:27,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:28,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:22:28,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:22:28,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:22:28,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:22:28,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:22:28,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:22:28,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:22:28,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:22:28,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:22:28,482 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:22:28,691 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:22:28,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:28,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:28,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:29,105 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:22:29,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:22:29,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-07 01:22:29,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-07 01:22:29,328 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:22:29,330 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:22:29,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,414 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,415 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,422 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,422 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:22:29,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:22:29,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:22:29,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:22:29,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:22:29,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:22:29,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:22:29,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:22:29,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:22:29,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:22:29,547 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:22:29,640 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,641 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:29,794 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:22:29,818 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2021-11-07 01:22:29,825 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2021-11-07 01:22:29,827 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:22:29,828 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:22:29,892 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,898 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,898 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,909 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:29,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:22:29,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:22:29,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:22:29,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:22:29,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:22:29,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:22:29,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:22:29,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:22:29,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:22:29,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:22:30,008 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:22:30,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:30,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:22:30,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:22:30,592 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:22:30,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30 WrapperNode [2021-11-07 01:22:30,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:22:30,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:22:30,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:22:30,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:22:30,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:30,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:30,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:22:30,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:22:30,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:22:30,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:22:30,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:30,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:22:31,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:22:31,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:22:31,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:22:31,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (1/1) ... [2021-11-07 01:22:31,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:22:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:22:31,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:22:31,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:22:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:22:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:22:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:22:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:22:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:22:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:22:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:22:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:22:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:22:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:22:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:22:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:22:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:22:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:22:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:22:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:22:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:22:48,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:22:48,490 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-11-07 01:22:48,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:48 BoogieIcfgContainer [2021-11-07 01:22:48,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:22:48,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:22:48,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:22:48,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:22:48,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:22:25" (1/3) ... [2021-11-07 01:22:48,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec376e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:48, skipping insertion in model container [2021-11-07 01:22:48,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:30" (2/3) ... [2021-11-07 01:22:48,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec376e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:48, skipping insertion in model container [2021-11-07 01:22:48,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:48" (3/3) ... [2021-11-07 01:22:48,502 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2021-11-07 01:22:48,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:22:48,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:22:48,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:22:48,575 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:22:48,575 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:22:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 115 states have (on average 1.4521739130434783) internal successors, (167), 120 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:22:48,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:48,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:48,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:22:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -924134613, now seen corresponding path program 1 times [2021-11-07 01:22:48,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:48,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653299426] [2021-11-07 01:22:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:48,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:48,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:48,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:22:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:53,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:22:53,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:54,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:54,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:54,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653299426] [2021-11-07 01:22:54,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653299426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:54,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:54,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:22:54,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733001377] [2021-11-07 01:22:54,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:22:54,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:22:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:22:54,310 INFO L87 Difference]: Start difference. First operand has 121 states, 115 states have (on average 1.4521739130434783) internal successors, (167), 120 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:54,341 INFO L93 Difference]: Finished difference Result 236 states and 326 transitions. [2021-11-07 01:22:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:22:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:22:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:54,355 INFO L225 Difference]: With dead ends: 236 [2021-11-07 01:22:54,356 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 01:22:54,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:22:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 01:22:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-07 01:22:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2021-11-07 01:22:54,408 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 34 [2021-11-07 01:22:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:54,409 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2021-11-07 01:22:54,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2021-11-07 01:22:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:22:54,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:54,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:54,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:54,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:54,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:22:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -4215317, now seen corresponding path program 1 times [2021-11-07 01:22:54,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:54,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967607256] [2021-11-07 01:22:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:54,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:54,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:54,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:54,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:22:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:59,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:22:59,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:59,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:00,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:00,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967607256] [2021-11-07 01:23:00,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967607256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:00,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:00,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:00,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408106399] [2021-11-07 01:23:00,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:00,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:00,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:00,069 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:00,285 INFO L93 Difference]: Finished difference Result 199 states and 255 transitions. [2021-11-07 01:23:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:00,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:23:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:00,291 INFO L225 Difference]: With dead ends: 199 [2021-11-07 01:23:00,291 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 01:23:00,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:23:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 01:23:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-07 01:23:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-07 01:23:00,305 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 34 [2021-11-07 01:23:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:00,305 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-07 01:23:00,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-11-07 01:23:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:23:00,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:00,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:00,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:00,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:00,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:23:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2121258970, now seen corresponding path program 1 times [2021-11-07 01:23:00,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:00,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987983146] [2021-11-07 01:23:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:00,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:00,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:00,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:00,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:23:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:05,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:05,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:05,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:06,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:06,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987983146] [2021-11-07 01:23:06,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987983146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:06,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:06,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 01:23:06,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193394613] [2021-11-07 01:23:06,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:23:06,263 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:06,948 INFO L93 Difference]: Finished difference Result 248 states and 313 transitions. [2021-11-07 01:23:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:23:06,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:23:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:06,954 INFO L225 Difference]: With dead ends: 248 [2021-11-07 01:23:06,954 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 01:23:06,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:23:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 01:23:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2021-11-07 01:23:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.313868613138686) internal successors, (180), 141 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2021-11-07 01:23:06,992 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 37 [2021-11-07 01:23:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:06,993 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-11-07 01:23:06,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2021-11-07 01:23:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:23:06,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:06,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:07,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:07,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:07,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:23:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1356059876, now seen corresponding path program 1 times [2021-11-07 01:23:07,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:07,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40278579] [2021-11-07 01:23:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:07,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:07,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:07,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:07,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:12,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:12,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:12,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:13,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:13,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40278579] [2021-11-07 01:23:13,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40278579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:13,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:13,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:23:13,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232521459] [2021-11-07 01:23:13,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:13,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:13,482 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:13,607 INFO L93 Difference]: Finished difference Result 283 states and 360 transitions. [2021-11-07 01:23:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:23:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:13,612 INFO L225 Difference]: With dead ends: 283 [2021-11-07 01:23:13,612 INFO L226 Difference]: Without dead ends: 241 [2021-11-07 01:23:13,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:23:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-07 01:23:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2021-11-07 01:23:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 225 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 291 transitions. [2021-11-07 01:23:13,630 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 291 transitions. Word has length 37 [2021-11-07 01:23:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:13,631 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 291 transitions. [2021-11-07 01:23:13,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 291 transitions. [2021-11-07 01:23:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:23:13,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:13,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:13,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:13,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:13,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:23:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash 154674179, now seen corresponding path program 1 times [2021-11-07 01:23:13,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:13,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29774365] [2021-11-07 01:23:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:13,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:13,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:13,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:23:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:18,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 01:23:18,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:19,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:32,516 WARN L207 SmtUtils]: Spent 11.30 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 01:23:32,526 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 01:23:32,527 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 [2021-11-07 01:34:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:39,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:39,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29774365] [2021-11-07 01:34:39,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29774365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:39,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:39,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-07 01:34:39,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899491120] [2021-11-07 01:34:39,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:34:39,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:34:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:34:39,450 INFO L87 Difference]: Start difference. First operand 226 states and 291 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:49,482 INFO L93 Difference]: Finished difference Result 686 states and 865 transitions. [2021-11-07 01:34:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 01:34:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 01:34:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:49,488 INFO L225 Difference]: With dead ends: 686 [2021-11-07 01:34:49,488 INFO L226 Difference]: Without dead ends: 547 [2021-11-07 01:34:49,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=318, Invalid=1242, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 01:34:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-07 01:34:49,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 311. [2021-11-07 01:34:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 306 states have (on average 1.3104575163398693) internal successors, (401), 310 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 401 transitions. [2021-11-07 01:34:49,520 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 401 transitions. Word has length 38 [2021-11-07 01:34:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:49,520 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 401 transitions. [2021-11-07 01:34:49,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 401 transitions. [2021-11-07 01:34:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:34:49,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:49,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:49,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:49,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:49,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:34:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 489246643, now seen corresponding path program 1 times [2021-11-07 01:34:49,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:49,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392683] [2021-11-07 01:34:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:49,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:49,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:49,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:34:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:53,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:34:53,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:54,128 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 [2021-11-07 01:34:54,140 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 [2021-11-07 01:34:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:54,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:55,169 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 [2021-11-07 01:34:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:55,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:34:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:55,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:55,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392683] [2021-11-07 01:34:55,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:55,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 16 [2021-11-07 01:34:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637952704] [2021-11-07 01:34:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:34:55,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:34:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:34:55,424 INFO L87 Difference]: Start difference. First operand 311 states and 401 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:05,393 INFO L93 Difference]: Finished difference Result 946 states and 1172 transitions. [2021-11-07 01:35:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 01:35:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:35:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:05,399 INFO L225 Difference]: With dead ends: 946 [2021-11-07 01:35:05,400 INFO L226 Difference]: Without dead ends: 676 [2021-11-07 01:35:05,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 01:35:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-07 01:35:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 329. [2021-11-07 01:35:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 324 states have (on average 1.2777777777777777) internal successors, (414), 328 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 414 transitions. [2021-11-07 01:35:05,450 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 414 transitions. Word has length 46 [2021-11-07 01:35:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:05,450 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 414 transitions. [2021-11-07 01:35:05,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 414 transitions. [2021-11-07 01:35:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:35:05,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:05,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:05,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:05,679 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1364595712, now seen corresponding path program 1 times [2021-11-07 01:35:05,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:05,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505182699] [2021-11-07 01:35:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:05,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:05,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:05,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:05,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:09,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:35:09,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:10,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:10,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:10,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505182699] [2021-11-07 01:35:10,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505182699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:10,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:10,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-07 01:35:10,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406750025] [2021-11-07 01:35:10,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:35:10,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:35:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:10,799 INFO L87 Difference]: Start difference. First operand 329 states and 414 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:11,056 INFO L93 Difference]: Finished difference Result 346 states and 433 transitions. [2021-11-07 01:35:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:35:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:35:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:11,058 INFO L225 Difference]: With dead ends: 346 [2021-11-07 01:35:11,058 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:35:11,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:35:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:35:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:35:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2407407407407407) internal successors, (134), 108 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-11-07 01:35:11,065 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 48 [2021-11-07 01:35:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:11,065 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-11-07 01:35:11,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-11-07 01:35:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:35:11,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:11,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:11,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:11,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1673398174, now seen corresponding path program 1 times [2021-11-07 01:35:11,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:11,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545619384] [2021-11-07 01:35:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:11,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:11,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:11,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:11,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:35:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:15,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:35:15,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:16,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:16,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:16,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545619384] [2021-11-07 01:35:16,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545619384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:16,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:16,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:35:16,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808960848] [2021-11-07 01:35:16,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:35:16,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:35:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:16,459 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:23,890 INFO L93 Difference]: Finished difference Result 226 states and 279 transitions. [2021-11-07 01:35:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:35:23,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:35:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:23,893 INFO L225 Difference]: With dead ends: 226 [2021-11-07 01:35:23,893 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 01:35:23,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:35:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 01:35:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-07 01:35:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 108 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2021-11-07 01:35:23,900 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 51 [2021-11-07 01:35:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:23,901 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2021-11-07 01:35:23,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2021-11-07 01:35:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:35:23,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:23,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:23,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:24,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:24,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 377585824, now seen corresponding path program 1 times [2021-11-07 01:35:24,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:24,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111403520] [2021-11-07 01:35:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:24,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:24,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:24,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:35:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:28,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:35:28,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:28,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 01:35:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:29,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:29,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-07 01:35:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:30,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:30,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111403520] [2021-11-07 01:35:30,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111403520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:30,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:30,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-07 01:35:30,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687570015] [2021-11-07 01:35:30,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:35:30,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:35:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:35:30,381 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:35,761 INFO L93 Difference]: Finished difference Result 133 states and 157 transitions. [2021-11-07 01:35:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:35:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:35:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:35,763 INFO L225 Difference]: With dead ends: 133 [2021-11-07 01:35:35,763 INFO L226 Difference]: Without dead ends: 126 [2021-11-07 01:35:35,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:35:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-07 01:35:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-11-07 01:35:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 108 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2021-11-07 01:35:35,770 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 51 [2021-11-07 01:35:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:35,771 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2021-11-07 01:35:35,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2021-11-07 01:35:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:35:35,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:35,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:35,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:35,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:35,973 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:35:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1057644194, now seen corresponding path program 1 times [2021-11-07 01:35:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:35,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002995501] [2021-11-07 01:35:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:35,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:35,977 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:35,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38f3ea06-169d-4275-b079-f3c2784464cc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:35:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:40,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:35:40,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:41,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:35:41,362 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 156 treesize of output 60 [2021-11-07 01:35:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:35:41,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:53,103 WARN L207 SmtUtils]: Spent 10.63 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 01:35:53,107 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 01:35:53,108 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 127 treesize of output 770