./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/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_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/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_b91f3fa8-db38-4e19-bd75-98131609ccae/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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:55,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:55,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:55,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:55,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:55,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:55,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:55,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:55,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:55,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:55,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:55,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:55,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:55,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:55,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:55,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:55,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:55,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:55,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:55,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:55,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:55,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:55,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:55,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:55,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:55,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:55,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:55,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:55,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:55,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:55,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:55,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:55,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:55,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:55,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:55,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:55,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:55,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:55,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:55,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:55,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:55,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:15:56,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:56,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:56,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:56,025 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:56,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:56,026 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:56,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:15:56,026 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:56,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:56,029 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:15:56,030 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:15:56,031 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:56,031 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:15:56,031 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:15:56,031 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:15:56,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:15:56,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:56,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:15:56,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:56,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:15:56,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:56,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:56,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:56,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:56,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:56,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:15:56,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:15:56,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:15:56,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:15:56,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:56,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:56,037 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_b91f3fa8-db38-4e19-bd75-98131609ccae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-07 02:15:56,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:56,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:56,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:56,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:56,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:56,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-07 02:15:56,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/8ca03b663/e22a70834b7348b7a1f5fdd082f80888/FLAG8d121a004 [2021-11-07 02:15:57,321 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:57,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-07 02:15:57,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/8ca03b663/e22a70834b7348b7a1f5fdd082f80888/FLAG8d121a004 [2021-11-07 02:15:57,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/8ca03b663/e22a70834b7348b7a1f5fdd082f80888 [2021-11-07 02:15:57,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:57,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:57,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:57,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:57,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:57,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:57" (1/1) ... [2021-11-07 02:15:57,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7602042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:57, skipping insertion in model container [2021-11-07 02:15:57,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:57" (1/1) ... [2021-11-07 02:15:57,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:15:57,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:15:58,272 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-07 02:15:58,279 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-07 02:15:58,304 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:15:58,310 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:15:59,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,577 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:15:59,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:00,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:16:00,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:16:00,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:16:00,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:16:00,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:16:00,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:16:00,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:16:00,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:16:00,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:16:00,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:16:00,330 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:16:00,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:00,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:00,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:00,632 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 02:16:00,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@472185c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:00, skipping insertion in model container [2021-11-07 02:16:00,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:00,633 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:16:00,635 INFO L168 Benchmark]: Toolchain (without parser) took 2837.67 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.8 MB in the beginning and 50.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:00,636 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:00,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2835.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 50.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:00,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 61.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2835.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 50.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 14.9 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_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/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_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/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_b91f3fa8-db38-4e19-bd75-98131609ccae/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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:03,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:03,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:03,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:03,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:03,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:03,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:03,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:03,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:03,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:03,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:03,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:03,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:03,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:03,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:03,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:03,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:03,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:03,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:03,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:03,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:03,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:03,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:03,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:03,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:03,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:03,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:03,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:03,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:03,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:03,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:03,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:03,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:03,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:03,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:03,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:03,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:03,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:03,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:03,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:03,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:03,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:16:03,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:03,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:03,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:03,267 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:03,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:03,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:03,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:03,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:03,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:03,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:03,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:03,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:03,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:03,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:03,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:03,272 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:16:03,272 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:16:03,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:03,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:03,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:03,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:03,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:16:03,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:03,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:03,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:03,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:03,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:03,274 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:16:03,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:03,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:03,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:03,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:03,275 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_b91f3fa8-db38-4e19-bd75-98131609ccae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-07 02:16:03,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:03,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:03,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:03,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:03,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:03,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-07 02:16:03,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/d81f0f9a9/78e5b5653e63448ba9e11dabe5bcd0a9/FLAG62dd92931 [2021-11-07 02:16:04,705 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:04,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-07 02:16:04,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/d81f0f9a9/78e5b5653e63448ba9e11dabe5bcd0a9/FLAG62dd92931 [2021-11-07 02:16:05,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/data/d81f0f9a9/78e5b5653e63448ba9e11dabe5bcd0a9 [2021-11-07 02:16:05,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:05,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:05,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:05,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:05,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:05,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:05" (1/1) ... [2021-11-07 02:16:05,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d26a7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:05, skipping insertion in model container [2021-11-07 02:16:05,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:05" (1/1) ... [2021-11-07 02:16:05,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:05,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:05,842 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-07 02:16:05,857 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-07 02:16:05,884 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:16:05,893 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:16:06,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:06,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:07,496 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:16:07,497 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:16:07,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:16:07,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:16:07,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:16:07,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:16:07,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:16:07,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:16:07,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:16:07,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:16:07,738 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:16:07,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:07,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:08,162 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:16:08,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:08,263 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-07 02:16:08,265 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-07 02:16:08,267 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:16:08,267 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:16:08,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,327 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,328 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:16:08,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:16:08,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:16:08,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:16:08,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:16:08,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:16:08,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:16:08,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:16:08,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:16:08,422 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:16:08,461 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:16:08,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:08,627 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:08,652 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-07 02:16:08,652 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_b91f3fa8-db38-4e19-bd75-98131609ccae/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-07 02:16:08,654 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:16:08,659 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:16:08,714 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,724 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:16:08,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:16:08,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:16:08,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:16:08,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:16:08,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:16:08,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:16:08,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:16:08,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:16:08,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:16:08,794 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:16:08,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:16:08,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:09,435 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:09,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09 WrapperNode [2021-11-07 02:16:09,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:09,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:09,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:09,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:09,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:09,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:09,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:09,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:09,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:09,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:09,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:09,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:09,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (1/1) ... [2021-11-07 02:16:09,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:09,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:09,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:09,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:16:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:16:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:16:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:16:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:16:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:16:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:16:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:16:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:16:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:16:24,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:24,972 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-07 02:16:24,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:24 BoogieIcfgContainer [2021-11-07 02:16:24,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:24,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:24,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:24,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:24,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:05" (1/3) ... [2021-11-07 02:16:24,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9d1432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:24, skipping insertion in model container [2021-11-07 02:16:24,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:09" (2/3) ... [2021-11-07 02:16:24,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9d1432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:24, skipping insertion in model container [2021-11-07 02:16:24,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:24" (3/3) ... [2021-11-07 02:16:24,984 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-07 02:16:24,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:24,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-07 02:16:25,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:25,057 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 02:16:25,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-07 02:16:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 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 02:16:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 02:16:25,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:25,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:25,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:16:25,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1810806174, now seen corresponding path program 1 times [2021-11-07 02:16:25,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:25,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156330323] [2021-11-07 02:16:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:25,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:25,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:25,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:16:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:29,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:16:29,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:29,784 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 02:16:29,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:30,039 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 02:16:30,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156330323] [2021-11-07 02:16:30,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156330323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:30,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:30,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:16:30,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512206574] [2021-11-07 02:16:30,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:16:30,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:16:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:16:30,064 INFO L87 Difference]: Start difference. First operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:30,097 INFO L93 Difference]: Finished difference Result 444 states and 617 transitions. [2021-11-07 02:16:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:16:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 02:16:30,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:30,111 INFO L225 Difference]: With dead ends: 444 [2021-11-07 02:16:30,111 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 02:16:30,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 104 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 02:16:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 02:16:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 02:16:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 216 states have internal predecessors, (275), 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 02:16:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2021-11-07 02:16:30,164 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 53 [2021-11-07 02:16:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:30,165 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2021-11-07 02:16:30,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2021-11-07 02:16:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 02:16:30,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:30,169 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:30,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:30,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:30,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:16:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1818889704, now seen corresponding path program 1 times [2021-11-07 02:16:30,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:30,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116287450] [2021-11-07 02:16:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:30,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:30,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:30,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:30,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:16:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:34,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:34,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:35,084 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 02:16:35,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:35,416 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 02:16:35,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:35,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116287450] [2021-11-07 02:16:35,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116287450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:35,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:35,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:16:35,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381912662] [2021-11-07 02:16:35,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:35,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:35,420 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:35,749 INFO L93 Difference]: Finished difference Result 413 states and 523 transitions. [2021-11-07 02:16:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 02:16:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:35,753 INFO L225 Difference]: With dead ends: 413 [2021-11-07 02:16:35,754 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 02:16:35,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 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 02:16:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 02:16:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 02:16:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 216 states have internal predecessors, (272), 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 02:16:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2021-11-07 02:16:35,788 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 53 [2021-11-07 02:16:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2021-11-07 02:16:35,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2021-11-07 02:16:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:16:35,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:35,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:36,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:36,015 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:16:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1514747006, now seen corresponding path program 1 times [2021-11-07 02:16:36,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:36,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644098368] [2021-11-07 02:16:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:36,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:36,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:36,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:16:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:40,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:40,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:40,898 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 02:16:40,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:41,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:41,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644098368] [2021-11-07 02:16:41,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644098368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:41,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:41,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:16:41,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844050712] [2021-11-07 02:16:41,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:41,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:41,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:16:41,260 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:41,542 INFO L93 Difference]: Finished difference Result 385 states and 482 transitions. [2021-11-07 02:16:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:41,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 02:16:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:41,548 INFO L225 Difference]: With dead ends: 385 [2021-11-07 02:16:41,549 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 02:16:41,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 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 02:16:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 02:16:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 02:16:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 216 states have internal predecessors, (270), 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 02:16:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 270 transitions. [2021-11-07 02:16:41,564 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 270 transitions. Word has length 57 [2021-11-07 02:16:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:41,565 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 270 transitions. [2021-11-07 02:16:41,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 270 transitions. [2021-11-07 02:16:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 02:16:41,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:41,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:41,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:41,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:41,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:16:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash 319412887, now seen corresponding path program 1 times [2021-11-07 02:16:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:41,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286120528] [2021-11-07 02:16:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:41,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:41,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:41,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:16:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:46,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:16:46,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:46,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 02:16:47,282 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 02:16:47,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:47,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-07 02:16:47,986 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 02:16:47,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:47,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286120528] [2021-11-07 02:16:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286120528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:47,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:47,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 02:16:47,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317738658] [2021-11-07 02:16:47,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:16:47,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:16:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:16:47,989 INFO L87 Difference]: Start difference. First operand 217 states and 270 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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 02:16:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:55,949 INFO L93 Difference]: Finished difference Result 594 states and 748 transitions. [2021-11-07 02:16:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 02:16:55,950 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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) Word has length 63 [2021-11-07 02:16:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:55,953 INFO L225 Difference]: With dead ends: 594 [2021-11-07 02:16:55,954 INFO L226 Difference]: Without dead ends: 425 [2021-11-07 02:16:55,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-07 02:16:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-07 02:16:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 327. [2021-11-07 02:16:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 314 states have (on average 1.3375796178343948) internal successors, (420), 326 states have internal predecessors, (420), 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 02:16:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 420 transitions. [2021-11-07 02:16:55,980 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 420 transitions. Word has length 63 [2021-11-07 02:16:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:55,981 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 420 transitions. [2021-11-07 02:16:55,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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 02:16:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 420 transitions. [2021-11-07 02:16:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:16:55,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:55,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:56,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:56,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:56,199 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:16:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 735656271, now seen corresponding path program 1 times [2021-11-07 02:16:56,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:56,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175837633] [2021-11-07 02:16:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:56,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:56,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:56,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:17:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:00,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:17:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:01,438 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:17:01,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 02:17:01,684 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 02:17:01,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:02,232 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 02:17:02,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:02,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175837633] [2021-11-07 02:17:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175837633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:02,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:02,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 02:17:02,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855125504] [2021-11-07 02:17:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:17:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:17:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:17:02,234 INFO L87 Difference]: Start difference. First operand 327 states and 420 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:13,265 INFO L93 Difference]: Finished difference Result 924 states and 1184 transitions. [2021-11-07 02:17:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:17:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 02:17:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:13,272 INFO L225 Difference]: With dead ends: 924 [2021-11-07 02:17:13,273 INFO L226 Difference]: Without dead ends: 640 [2021-11-07 02:17:13,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:17:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-07 02:17:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 369. [2021-11-07 02:17:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 356 states have (on average 1.3314606741573034) internal successors, (474), 368 states have internal predecessors, (474), 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 02:17:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 474 transitions. [2021-11-07 02:17:13,294 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 474 transitions. Word has length 67 [2021-11-07 02:17:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:13,294 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 474 transitions. [2021-11-07 02:17:13,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 474 transitions. [2021-11-07 02:17:13,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:17:13,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:13,296 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:13,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:13,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:17:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash -108349231, now seen corresponding path program 1 times [2021-11-07 02:17:13,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:13,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119541141] [2021-11-07 02:17:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:13,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:13,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:13,512 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:13,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:17:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:17,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:17:17,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:18,451 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:17:18,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 02:17:18,998 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 02:17:18,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:19,529 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 02:17:19,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:19,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119541141] [2021-11-07 02:17:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119541141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:19,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:19,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 02:17:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311267443] [2021-11-07 02:17:19,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 02:17:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 02:17:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:17:19,532 INFO L87 Difference]: Start difference. First operand 369 states and 474 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:30,685 INFO L93 Difference]: Finished difference Result 1153 states and 1439 transitions. [2021-11-07 02:17:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 02:17:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 02:17:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:30,696 INFO L225 Difference]: With dead ends: 1153 [2021-11-07 02:17:30,697 INFO L226 Difference]: Without dead ends: 770 [2021-11-07 02:17:30,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 02:17:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-11-07 02:17:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 364. [2021-11-07 02:17:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 351 states have (on average 1.2962962962962963) internal successors, (455), 363 states have internal predecessors, (455), 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 02:17:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 455 transitions. [2021-11-07 02:17:30,722 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 455 transitions. Word has length 67 [2021-11-07 02:17:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:30,723 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 455 transitions. [2021-11-07 02:17:30,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 455 transitions. [2021-11-07 02:17:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 02:17:30,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:30,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:30,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:30,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:30,947 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:17:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -591691523, now seen corresponding path program 1 times [2021-11-07 02:17:30,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:30,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005440509] [2021-11-07 02:17:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:30,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:30,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:30,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:17:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:35,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:17:35,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:35,680 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 02:17:35,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:35,943 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 02:17:35,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:35,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005440509] [2021-11-07 02:17:35,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005440509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:35,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:35,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:17:35,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285799649] [2021-11-07 02:17:35,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:17:35,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:17:35,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:17:35,946 INFO L87 Difference]: Start difference. First operand 364 states and 455 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:17:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:36,217 INFO L93 Difference]: Finished difference Result 717 states and 887 transitions. [2021-11-07 02:17:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:17:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2021-11-07 02:17:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:36,220 INFO L225 Difference]: With dead ends: 717 [2021-11-07 02:17:36,220 INFO L226 Difference]: Without dead ends: 393 [2021-11-07 02:17:36,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 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 02:17:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-07 02:17:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 352. [2021-11-07 02:17:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 339 states have (on average 1.2713864306784661) internal successors, (431), 351 states have internal predecessors, (431), 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 02:17:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 431 transitions. [2021-11-07 02:17:36,237 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 431 transitions. Word has length 75 [2021-11-07 02:17:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:36,240 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 431 transitions. [2021-11-07 02:17:36,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:17:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 431 transitions. [2021-11-07 02:17:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 02:17:36,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:36,244 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:36,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:36,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:36,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:17:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1336581179, now seen corresponding path program 1 times [2021-11-07 02:17:36,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:36,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900307597] [2021-11-07 02:17:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:36,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:36,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:36,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:17:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:41,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:17:41,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:42,555 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 02:17:42,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:53,125 WARN L207 SmtUtils]: Spent 9.32 s on a formula simplification. DAG size of input: 526 DAG size of output: 272 [2021-11-07 02:17:53,131 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-07 02:17:53,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-07 02:27:46,903 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 02:27:46,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:46,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900307597] [2021-11-07 02:27:46,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900307597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:46,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:27:46,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-07 02:27:46,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755819461] [2021-11-07 02:27:46,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:27:46,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:27:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:27:46,905 INFO L87 Difference]: Start difference. First operand 352 states and 431 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:28:02,016 INFO L93 Difference]: Finished difference Result 598 states and 700 transitions. [2021-11-07 02:28:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:28:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 02:28:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:28:02,021 INFO L225 Difference]: With dead ends: 598 [2021-11-07 02:28:02,021 INFO L226 Difference]: Without dead ends: 449 [2021-11-07 02:28:02,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-07 02:28:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-07 02:28:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 339. [2021-11-07 02:28:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 338 states have internal predecessors, (412), 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 02:28:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 412 transitions. [2021-11-07 02:28:02,037 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 412 transitions. Word has length 75 [2021-11-07 02:28:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:28:02,038 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 412 transitions. [2021-11-07 02:28:02,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:28:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 412 transitions. [2021-11-07 02:28:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 02:28:02,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:28:02,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:28:02,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:28:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:28:02,247 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 02:28:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:28:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash 231197571, now seen corresponding path program 1 times [2021-11-07 02:28:02,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:28:02,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000374738] [2021-11-07 02:28:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:02,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:28:02,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:28:02,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:28:02,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b91f3fa8-db38-4e19-bd75-98131609ccae/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:28:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:06,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:28:06,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:28:07,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:28:07,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-07 02:28:07,515 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 02:28:07,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:28:16,627 WARN L207 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 02:28:16,629 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 02:28:16,629 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 129 treesize of output 772