./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:35:02,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:35:02,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:35:02,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:35:02,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:35:02,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:35:02,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:35:02,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:35:02,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:35:02,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:35:02,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:35:02,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:35:02,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:35:02,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:35:02,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:35:02,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:35:03,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:35:03,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:35:03,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:35:03,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:35:03,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:35:03,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:35:03,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:35:03,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:35:03,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:35:03,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:35:03,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:35:03,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:35:03,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:35:03,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:35:03,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:35:03,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:35:03,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:35:03,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:35:03,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:35:03,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:35:03,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:35:03,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:35:03,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:35:03,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:35:03,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:35:03,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:35:03,107 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:35:03,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:35:03,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:35:03,110 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:35:03,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:35:03,110 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:35:03,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:35:03,111 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:35:03,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:35:03,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:35:03,112 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:35:03,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:35:03,113 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:35:03,113 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:35:03,113 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:35:03,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:35:03,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:35:03,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:35:03,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:35:03,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:35:03,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:35:03,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:35:03,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:35:03,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:35:03,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:35:03,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:35:03,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:35:03,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:03,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:35:03,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:35:03,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:35:03,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:35:03,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:35:03,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:35:03,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:35:03,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:35:03,122 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2021-11-07 01:35:03,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:35:03,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:35:03,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:35:03,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:35:03,486 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:35:03,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-07 01:35:03,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/e0a89c5dd/d0edd0edb67640f3bbc2bc74295c6334/FLAGa63295c7f [2021-11-07 01:35:04,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:35:04,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-07 01:35:04,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/e0a89c5dd/d0edd0edb67640f3bbc2bc74295c6334/FLAGa63295c7f [2021-11-07 01:35:04,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/e0a89c5dd/d0edd0edb67640f3bbc2bc74295c6334 [2021-11-07 01:35:04,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:35:04,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:35:04,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:04,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:35:04,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:35:04,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:04" (1/1) ... [2021-11-07 01:35:04,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f93468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:04, skipping insertion in model container [2021-11-07 01:35:04,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:04" (1/1) ... [2021-11-07 01:35:04,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:35:05,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:05,411 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-07 01:35:05,419 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-07 01:35:05,446 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:35:05,453 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:35:06,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:06,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:07,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:35:07,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:35:07,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:35:07,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:35:07,580 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:35:07,581 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:35:07,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:35:07,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:35:07,584 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:35:07,585 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:35:07,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:35:07,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:07,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:08,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:08,078 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 01:35:08,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@855f938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:08, skipping insertion in model container [2021-11-07 01:35:08,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:08,080 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:35:08,082 INFO L168 Benchmark]: Toolchain (without parser) took 3140.41 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 61.0 MB in the beginning and 103.6 MB in the end (delta: -42.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:35:08,083 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:35:08,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3134.85 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 60.8 MB in the beginning and 103.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:35:08,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3134.85 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 60.8 MB in the beginning and 103.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 37.7 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:35:10,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:35:10,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:35:10,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:35:10,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:35:10,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:35:10,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:35:10,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:35:10,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:35:10,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:35:10,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:35:10,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:35:10,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:35:10,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:35:10,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:35:10,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:35:10,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:35:10,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:35:10,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:35:10,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:35:10,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:35:10,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:35:10,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:35:10,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:35:10,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:35:10,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:35:10,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:35:10,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:35:10,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:35:10,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:35:10,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:35:10,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:35:10,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:35:10,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:35:10,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:35:10,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:35:10,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:35:10,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:35:10,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:35:10,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:35:10,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:35:10,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:35:10,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:35:10,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:35:10,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:35:10,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:35:10,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:35:10,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:35:10,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:35:10,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:35:10,760 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:35:10,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:35:10,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:35:10,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:35:10,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:35:10,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:35:10,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:35:10,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:35:10,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:35:10,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:35:10,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:35:10,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:35:10,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:35:10,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:35:10,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:35:10,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:10,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:35:10,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:35:10,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:35:10,764 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:35:10,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:10,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:35:10,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:35:10,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:35:10,765 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2021-11-07 01:35:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:35:11,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:35:11,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:35:11,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:35:11,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:35:11,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-07 01:35:11,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/c2fbf24ff/bf10659c1ce64d9b9e9ff1de80cfd12f/FLAG9f5fc283f [2021-11-07 01:35:12,305 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:35:12,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2021-11-07 01:35:12,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/c2fbf24ff/bf10659c1ce64d9b9e9ff1de80cfd12f/FLAG9f5fc283f [2021-11-07 01:35:12,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/data/c2fbf24ff/bf10659c1ce64d9b9e9ff1de80cfd12f [2021-11-07 01:35:12,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:35:12,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:35:12,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:12,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:35:12,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:35:12,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:12" (1/1) ... [2021-11-07 01:35:12,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509130a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:12, skipping insertion in model container [2021-11-07 01:35:12,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:12" (1/1) ... [2021-11-07 01:35:12,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:35:12,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:13,122 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-07 01:35:13,130 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-07 01:35:13,156 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:35:13,162 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:35:14,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,246 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:14,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:35:14,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:35:14,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:35:14,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:35:14,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:35:14,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:35:14,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:35:14,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:35:14,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:35:14,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:35:14,983 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:35:15,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:15,324 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:35:15,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:15,398 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-07 01:35:15,398 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-07 01:35:15,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:35:15,403 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:35:15,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,464 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,465 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,479 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:35:15,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:35:15,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:35:15,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:35:15,551 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:35:15,552 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:35:15,556 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:35:15,556 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:35:15,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:35:15,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:35:15,618 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:35:15,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:15,835 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:35:15,861 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2021-11-07 01:35:15,861 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_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2021-11-07 01:35:15,863 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:35:15,864 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:35:15,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,911 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:15,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:35:15,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:35:15,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:35:15,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:35:15,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:35:15,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:35:15,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:35:15,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:35:15,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:35:15,999 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:35:16,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:35:16,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:16,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:35:16,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:16,525 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:35:16,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16 WrapperNode [2021-11-07 01:35:16,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:16,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:35:16,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:35:16,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:35:16,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:35:16,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:35:16,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:35:16,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:35:16,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:35:16,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:35:16,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:35:16,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:35:16,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (1/1) ... [2021-11-07 01:35:16,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:17,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:35:17,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:35:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:35:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:35:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:35:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:35:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:35:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:35:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:35:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:35:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:35:33,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:35:33,084 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-11-07 01:35:33,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:33 BoogieIcfgContainer [2021-11-07 01:35:33,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:35:33,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:35:33,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:35:33,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:35:33,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:35:12" (1/3) ... [2021-11-07 01:35:33,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37260e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:33, skipping insertion in model container [2021-11-07 01:35:33,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:16" (2/3) ... [2021-11-07 01:35:33,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37260e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:33, skipping insertion in model container [2021-11-07 01:35:33,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:33" (3/3) ... [2021-11-07 01:35:33,097 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2021-11-07 01:35:33,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:35:33,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:35:33,191 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:35:33,196 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 01:35:33,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:35:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 77 states have internal predecessors, (104), 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 01:35:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:35:33,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:33,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:33,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:33,232 INFO L85 PathProgramCache]: Analyzing trace with hash 810375617, now seen corresponding path program 1 times [2021-11-07 01:35:33,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:33,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613254284] [2021-11-07 01:35:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:33,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:33,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:33,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:33,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:35:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:37,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:35:37,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:37,508 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 01:35:37,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:37,577 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 01:35:37,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:37,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613254284] [2021-11-07 01:35:37,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613254284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:37,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:37,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:35:37,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582983494] [2021-11-07 01:35:37,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:35:37,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:35:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:35:37,604 INFO L87 Difference]: Start difference. First operand has 78 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 77 states have internal predecessors, (104), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 01:35:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:37,625 INFO L93 Difference]: Finished difference Result 153 states and 204 transitions. [2021-11-07 01:35:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:35:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-11-07 01:35:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:37,636 INFO L225 Difference]: With dead ends: 153 [2021-11-07 01:35:37,637 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 01:35:37,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 01:35:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 01:35:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-07 01:35:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.328125) internal successors, (85), 70 states have internal predecessors, (85), 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 01:35:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2021-11-07 01:35:37,677 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 14 [2021-11-07 01:35:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:37,677 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2021-11-07 01:35:37,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 01:35:37,678 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2021-11-07 01:35:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:35:37,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:37,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:37,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:37,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1068541055, now seen corresponding path program 1 times [2021-11-07 01:35:37,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:37,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636877466] [2021-11-07 01:35:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:37,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:37,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:37,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:37,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:35:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:41,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:35:41,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:42,005 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 01:35:42,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:42,089 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 01:35:42,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:42,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636877466] [2021-11-07 01:35:42,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636877466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:42,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:42,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:35:42,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483355950] [2021-11-07 01:35:42,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:42,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:42,093 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 01:35:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:43,471 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2021-11-07 01:35:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-07 01:35:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:43,473 INFO L225 Difference]: With dead ends: 120 [2021-11-07 01:35:43,473 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 01:35:43,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 01:35:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 01:35:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-07 01:35:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.3125) internal successors, (84), 70 states have internal predecessors, (84), 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 01:35:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2021-11-07 01:35:43,482 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 14 [2021-11-07 01:35:43,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:43,482 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2021-11-07 01:35:43,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 01:35:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2021-11-07 01:35:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:35:43,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:43,483 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] [2021-11-07 01:35:43,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:43,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:43,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -715146382, now seen corresponding path program 1 times [2021-11-07 01:35:43,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:43,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674154710] [2021-11-07 01:35:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:43,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:43,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:43,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:43,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:47,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:35:47,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:47,898 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 01:35:47,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:47,991 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 01:35:47,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:47,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674154710] [2021-11-07 01:35:47,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674154710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:47,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:47,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:35:47,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420195461] [2021-11-07 01:35:47,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:47,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:47,994 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 01:35:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:52,234 INFO L93 Difference]: Finished difference Result 173 states and 214 transitions. [2021-11-07 01:35:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:35:52,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-11-07 01:35:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:52,236 INFO L225 Difference]: With dead ends: 173 [2021-11-07 01:35:52,236 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 01:35:52,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 01:35:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 01:35:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 75. [2021-11-07 01:35:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 74 states have internal predecessors, (88), 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 01:35:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-11-07 01:35:52,247 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 20 [2021-11-07 01:35:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:52,247 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-11-07 01:35:52,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 01:35:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-11-07 01:35:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:35:52,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:52,249 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] [2021-11-07 01:35:52,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:52,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:35:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1524493008, now seen corresponding path program 1 times [2021-11-07 01:35:52,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:52,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043494879] [2021-11-07 01:35:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:52,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:52,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:52,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:35:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:56,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:35:56,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:56,549 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 01:35:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:56,629 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 01:35:56,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:56,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043494879] [2021-11-07 01:35:56,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043494879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:56,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:56,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:35:56,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737555706] [2021-11-07 01:35:56,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:56,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:56,632 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 01:36:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:02,334 INFO L93 Difference]: Finished difference Result 167 states and 202 transitions. [2021-11-07 01:36:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:36:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-11-07 01:36:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:02,336 INFO L225 Difference]: With dead ends: 167 [2021-11-07 01:36:02,336 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 01:36:02,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:36:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 01:36:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 79. [2021-11-07 01:36:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 78 states have internal predecessors, (92), 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 01:36:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2021-11-07 01:36:02,345 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 20 [2021-11-07 01:36:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:02,346 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2021-11-07 01:36:02,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 01:36:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2021-11-07 01:36:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:36:02,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:02,348 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] [2021-11-07 01:36:02,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:02,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:02,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:36:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash -322119372, now seen corresponding path program 1 times [2021-11-07 01:36:02,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:02,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381820461] [2021-11-07 01:36:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:02,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:02,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:02,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:36:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:06,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:06,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:06,551 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 01:36:06,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:06,656 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 01:36:06,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:06,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381820461] [2021-11-07 01:36:06,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381820461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:06,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:06,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 01:36:06,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42912851] [2021-11-07 01:36:06,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:36:06,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:36:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:36:06,658 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 01:36:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:13,318 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-11-07 01:36:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:36:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 20 [2021-11-07 01:36:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:13,320 INFO L225 Difference]: With dead ends: 139 [2021-11-07 01:36:13,320 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 01:36:13,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:36:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 01:36:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 87. [2021-11-07 01:36:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.25) internal successors, (100), 86 states have internal predecessors, (100), 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 01:36:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2021-11-07 01:36:13,331 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 20 [2021-11-07 01:36:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:13,331 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2021-11-07 01:36:13,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 01:36:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2021-11-07 01:36:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:36:13,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:13,338 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] [2021-11-07 01:36:13,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:13,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:13,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:36:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2144800216, now seen corresponding path program 1 times [2021-11-07 01:36:13,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:13,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027689664] [2021-11-07 01:36:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:13,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:13,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:13,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:13,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:36:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:36:35,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:36,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 132 [2021-11-07 01:36:37,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:36:37,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 329 treesize of output 137 [2021-11-07 01:36:38,015 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 01:36:38,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:41,293 INFO L354 Elim1Store]: treesize reduction 9046, result has 0.0 percent of original size [2021-11-07 01:36:41,294 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 16 case distinctions, treesize of input 240 treesize of output 1 [2021-11-07 01:36:41,322 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 01:36:41,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:41,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027689664] [2021-11-07 01:36:41,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027689664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:41,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:41,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 10 [2021-11-07 01:36:41,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20411811] [2021-11-07 01:36:41,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:36:41,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:36:41,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:41,324 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 01:36:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:47,309 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2021-11-07 01:36:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:36:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 24 [2021-11-07 01:36:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:47,314 INFO L225 Difference]: With dead ends: 153 [2021-11-07 01:36:47,314 INFO L226 Difference]: Without dead ends: 94 [2021-11-07 01:36:47,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:36:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-07 01:36:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2021-11-07 01:36:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 88 states have internal predecessors, (102), 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 01:36:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2021-11-07 01:36:47,323 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 24 [2021-11-07 01:36:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:47,324 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2021-11-07 01:36:47,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 01:36:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2021-11-07 01:36:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:36:47,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:47,326 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] [2021-11-07 01:36:47,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:36:47,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:47,548 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:36:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1464741846, now seen corresponding path program 1 times [2021-11-07 01:36:47,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:47,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668484749] [2021-11-07 01:36:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:47,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:47,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:47,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:36:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:51,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:36:51,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:51,922 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:36:51,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 204 treesize of output 60 [2021-11-07 01:36:52,038 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 01:36:52,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:52,462 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 01:36:52,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:52,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668484749] [2021-11-07 01:36:52,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668484749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:52,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:52,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:36:52,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408865845] [2021-11-07 01:36:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:52,464 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 01:37:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:01,598 INFO L93 Difference]: Finished difference Result 206 states and 231 transitions. [2021-11-07 01:37:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:37:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 24 [2021-11-07 01:37:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:01,603 INFO L225 Difference]: With dead ends: 206 [2021-11-07 01:37:01,603 INFO L226 Difference]: Without dead ends: 143 [2021-11-07 01:37:01,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:37:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-07 01:37:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 95. [2021-11-07 01:37:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 94 states have internal predecessors, (108), 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 01:37:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2021-11-07 01:37:01,614 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 24 [2021-11-07 01:37:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:01,614 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2021-11-07 01:37:01,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 01:37:01,615 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2021-11-07 01:37:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:37:01,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:01,616 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] [2021-11-07 01:37:01,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:01,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:01,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:37:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash -711790034, now seen corresponding path program 1 times [2021-11-07 01:37:01,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:01,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332363221] [2021-11-07 01:37:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:01,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:01,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:01,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:16,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:37:16,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:16,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 135 [2021-11-07 01:37:17,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:37:17,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 240 treesize of output 112 [2021-11-07 01:37:17,238 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 01:37:17,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:23,815 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 719 DAG size of output: 92 [2021-11-07 01:37:23,816 INFO L354 Elim1Store]: treesize reduction 8872, result has 1.9 percent of original size [2021-11-07 01:37:23,817 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 16 case distinctions, treesize of input 181 treesize of output 241 [2021-11-07 01:37:23,856 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-07 01:37:23,857 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 241 treesize of output 99 [2021-11-07 01:37:23,979 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 01:37:23,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:23,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332363221] [2021-11-07 01:37:23,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332363221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:23,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:23,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 11 [2021-11-07 01:37:23,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491259876] [2021-11-07 01:37:23,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:37:23,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:37:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:37:23,983 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 01:37:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:32,058 INFO L93 Difference]: Finished difference Result 209 states and 238 transitions. [2021-11-07 01:37:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:37:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 24 [2021-11-07 01:37:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:32,064 INFO L225 Difference]: With dead ends: 209 [2021-11-07 01:37:32,064 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 01:37:32,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:37:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 01:37:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2021-11-07 01:37:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 97 states have internal predecessors, (111), 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 01:37:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2021-11-07 01:37:32,074 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 24 [2021-11-07 01:37:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:32,075 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2021-11-07 01:37:32,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 01:37:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2021-11-07 01:37:32,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:37:32,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:32,077 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] [2021-11-07 01:37:32,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:32,288 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:37:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1994829360, now seen corresponding path program 1 times [2021-11-07 01:37:32,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:32,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652373599] [2021-11-07 01:37:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:32,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:32,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:32,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:44:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:31,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:44:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:31,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 83 [2021-11-07 01:44:31,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 22 [2021-11-07 01:44:31,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-07 01:44:31,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:31,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 320 [2021-11-07 01:44:31,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:44:31,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 707 [2021-11-07 01:44:31,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 707 treesize of output 676 [2021-11-07 01:44:31,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 153 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 127 [2021-11-07 01:44:32,012 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 01:44:32,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:47,479 WARN L207 SmtUtils]: Spent 15.21 s on a formula simplification. DAG size of input: 207 DAG size of output: 10 [2021-11-07 01:44:47,480 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-07 01:44:47,480 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 8 case distinctions, treesize of input 420 treesize of output 332 [2021-11-07 01:44:49,413 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-07 01:44:49,414 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 8 case distinctions, treesize of input 332 treesize of output 244 [2021-11-07 01:44:50,408 INFO L354 Elim1Store]: treesize reduction 1602, result has 0.6 percent of original size [2021-11-07 01:44:50,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 244 treesize of output 151 [2021-11-07 01:44:50,419 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 147 treesize of output 143 [2021-11-07 01:44:50,844 INFO L354 Elim1Store]: treesize reduction 1602, result has 0.6 percent of original size [2021-11-07 01:44:50,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 143 treesize of output 50 [2021-11-07 01:44:50,855 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 46 treesize of output 42 [2021-11-07 01:44:50,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 46 [2021-11-07 01:44:50,875 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-07 01:44:50,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-11-07 01:44:50,987 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 01:44:50,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:44:50,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652373599] [2021-11-07 01:44:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652373599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:44:50,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:44:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2021-11-07 01:44:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059914830] [2021-11-07 01:44:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:44:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:44:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:44:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:44:50,990 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 01:44:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:44:56,484 INFO L93 Difference]: Finished difference Result 185 states and 208 transitions. [2021-11-07 01:44:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:44:56,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 24 [2021-11-07 01:44:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:44:56,488 INFO L225 Difference]: With dead ends: 185 [2021-11-07 01:44:56,488 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 01:44:56,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:44:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 01:44:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2021-11-07 01:44:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 97 states have internal predecessors, (110), 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 01:44:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2021-11-07 01:44:56,497 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 24 [2021-11-07 01:44:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:44:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2021-11-07 01:44:56,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 01:44:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2021-11-07 01:44:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:44:56,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:56,499 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] [2021-11-07 01:44:56,699 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forcibly destroying the process [2021-11-07 01:44:56,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 137 [2021-11-07 01:44:56,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:44:56,858 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:44:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2041972498, now seen corresponding path program 1 times [2021-11-07 01:44:56,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:56,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954381300] [2021-11-07 01:44:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:56,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:56,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:56,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:45:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:10,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:45:10,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:10,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 136 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 133 [2021-11-07 01:45:11,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:45:11,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 238 treesize of output 110 [2021-11-07 01:45:11,366 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 01:45:11,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:18,357 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 719 DAG size of output: 92 [2021-11-07 01:45:18,358 INFO L354 Elim1Store]: treesize reduction 8872, result has 1.9 percent of original size [2021-11-07 01:45:18,359 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 16 case distinctions, treesize of input 178 treesize of output 238 [2021-11-07 01:45:18,401 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-07 01:45:18,402 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 238 treesize of output 98 [2021-11-07 01:45:18,495 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 01:45:18,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:18,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954381300] [2021-11-07 01:45:18,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954381300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:18,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 12 [2021-11-07 01:45:18,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070765666] [2021-11-07 01:45:18,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:45:18,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:45:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:45:18,498 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 01:45:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:26,295 INFO L93 Difference]: Finished difference Result 171 states and 190 transitions. [2021-11-07 01:45:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:45:26,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 24 [2021-11-07 01:45:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:26,298 INFO L225 Difference]: With dead ends: 171 [2021-11-07 01:45:26,298 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 01:45:26,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:45:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 01:45:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-11-07 01:45:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 92 states have internal predecessors, (101), 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 01:45:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2021-11-07 01:45:26,306 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 24 [2021-11-07 01:45:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:26,307 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2021-11-07 01:45:26,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 01:45:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2021-11-07 01:45:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:45:26,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:26,309 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] [2021-11-07 01:45:26,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:45:26,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:26,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:45:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1548380899, now seen corresponding path program 1 times [2021-11-07 01:45:26,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:26,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686858926] [2021-11-07 01:45:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:26,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:26,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:26,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:45:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:31,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:45:31,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:31,318 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 01:45:31,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:45:31,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:31,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686858926] [2021-11-07 01:45:31,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686858926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:31,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:31,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-07 01:45:31,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866717518] [2021-11-07 01:45:31,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:45:31,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:45:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:45:31,475 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 01:45:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:44,678 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-11-07 01:45:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:45:44,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 26 [2021-11-07 01:45:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:44,679 INFO L225 Difference]: With dead ends: 165 [2021-11-07 01:45:44,680 INFO L226 Difference]: Without dead ends: 161 [2021-11-07 01:45:44,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:45:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-07 01:45:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 97. [2021-11-07 01:45:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 96 states have internal predecessors, (105), 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 01:45:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2021-11-07 01:45:44,687 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 26 [2021-11-07 01:45:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:44,688 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2021-11-07 01:45:44,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 01:45:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2021-11-07 01:45:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:45:44,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:44,690 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] [2021-11-07 01:45:44,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:44,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:44,900 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:45:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash 739034273, now seen corresponding path program 1 times [2021-11-07 01:45:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:44,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97580903] [2021-11-07 01:45:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:44,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:44,905 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:44,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c295296-e3cf-417c-b56d-c8ddb32fa1ea/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:48:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:05,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 01:48:05,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:06,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 87 [2021-11-07 01:48:06,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:48:06,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-07 01:48:06,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 261 treesize of output 242 [2021-11-07 01:48:06,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 45 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 75 [2021-11-07 01:48:06,934 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 01:48:06,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:48:08,227 INFO L354 Elim1Store]: treesize reduction 1526, result has 0.7 percent of original size [2021-11-07 01:48:08,228 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 8 case distinctions, treesize of input 211 treesize of output 123 [2021-11-07 01:48:08,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:48:08,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 416 [2021-11-07 01:48:08,250 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 416 treesize of output 398 [2021-11-07 01:48:09,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5282873689 treesize of output 5280776533