./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_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_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/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_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/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_dce66630-c16c-45dd-86a2-e93806289a07/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:03:23,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:03:23,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:03:23,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:03:23,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:03:23,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:03:23,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:03:23,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:03:23,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:03:23,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:03:23,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:03:23,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:03:23,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:03:23,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:03:23,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:03:23,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:03:23,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:03:23,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:03:23,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:03:23,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:03:23,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:03:23,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:03:23,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:03:23,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:03:23,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:03:23,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:03:23,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:03:23,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:03:23,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:03:23,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:03:23,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:03:23,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:03:23,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:03:23,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:03:23,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:03:23,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:03:23,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:03:23,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:03:23,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:03:23,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:03:23,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:03:23,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:03:23,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:03:23,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:03:23,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:03:23,763 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:03:23,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:03:23,764 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:03:23,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:03:23,764 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:03:23,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:03:23,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:03:23,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:03:23,772 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:03:23,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:03:23,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:03:23,773 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:03:23,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:03:23,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:03:23,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:03:23,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:03:23,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:03:23,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:03:23,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:03:23,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:03:23,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:03:23,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:03:23,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:03:23,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:03:23,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:23,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:03:23,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:03:23,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:03:23,784 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:03:23,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:03:23,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:03:23,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:03:23,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:03:23,785 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_dce66630-c16c-45dd-86a2-e93806289a07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-07 02:03:24,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:03:24,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:03:24,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:03:24,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:03:24,063 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:03:24,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-07 02:03:24,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/e3cad7554/a911b3f8ce14435eb6c413737a52e756/FLAGda598086a [2021-11-07 02:03:24,969 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:03:24,970 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-07 02:03:25,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/e3cad7554/a911b3f8ce14435eb6c413737a52e756/FLAGda598086a [2021-11-07 02:03:25,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/e3cad7554/a911b3f8ce14435eb6c413737a52e756 [2021-11-07 02:03:25,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:03:25,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:03:25,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:25,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:03:25,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:03:25,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:25" (1/1) ... [2021-11-07 02:03:25,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1983ad16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:25, skipping insertion in model container [2021-11-07 02:03:25,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:25" (1/1) ... [2021-11-07 02:03:25,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:03:25,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:03:25,892 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-07 02:03:25,899 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-07 02:03:25,924 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:03:25,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:03:26,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:26,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:27,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:03:27,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:03:27,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:03:27,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:03:27,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:03:27,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:03:27,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:03:27,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:03:27,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:03:27,333 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:03:27,607 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:03:27,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:27,770 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:27,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:27,889 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 02:03:27,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13367596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:27, skipping insertion in model container [2021-11-07 02:03:27,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:27,891 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:03:27,893 INFO L168 Benchmark]: Toolchain (without parser) took 2410.11 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.9 MB in the beginning and 60.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:03:27,893 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:03:27,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2407.89 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.7 MB in the beginning and 60.7 MB in the end (delta: 964.2 kB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:03:27,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2407.89 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.7 MB in the beginning and 60.7 MB in the end (delta: 964.2 kB). Peak memory consumption was 34.9 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_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/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_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/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_dce66630-c16c-45dd-86a2-e93806289a07/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:03:30,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:03:30,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:03:30,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:03:30,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:03:30,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:03:30,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:03:30,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:03:30,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:03:30,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:03:30,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:03:30,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:03:30,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:03:30,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:03:30,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:03:30,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:03:30,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:03:30,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:03:30,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:03:30,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:03:30,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:03:30,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:03:30,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:03:30,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:03:30,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:03:30,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:03:30,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:03:30,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:03:30,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:03:30,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:03:30,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:03:30,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:03:30,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:03:30,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:03:30,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:03:30,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:03:30,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:03:30,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:03:30,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:03:30,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:03:30,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:03:30,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:03:30,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:03:30,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:03:30,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:03:30,289 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:03:30,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:03:30,290 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:03:30,290 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:03:30,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:03:30,290 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:03:30,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:03:30,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:03:30,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:03:30,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:03:30,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:03:30,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:03:30,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:03:30,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:03:30,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:03:30,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:30,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:03:30,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:03:30,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:03:30,296 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:03:30,296 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:30,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:03:30,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:03:30,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:03:30,297 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_dce66630-c16c-45dd-86a2-e93806289a07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-07 02:03:30,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:03:30,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:03:30,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:03:30,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:03:30,675 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:03:30,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-07 02:03:30,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/2197d5f5e/6f72c32a45ae401e96d775e5724c5920/FLAG1e4613348 [2021-11-07 02:03:31,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:03:31,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-07 02:03:31,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/2197d5f5e/6f72c32a45ae401e96d775e5724c5920/FLAG1e4613348 [2021-11-07 02:03:32,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/data/2197d5f5e/6f72c32a45ae401e96d775e5724c5920 [2021-11-07 02:03:32,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:03:32,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:03:32,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:32,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:03:32,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:03:32,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:32" (1/1) ... [2021-11-07 02:03:32,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed382f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:32, skipping insertion in model container [2021-11-07 02:03:32,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:32" (1/1) ... [2021-11-07 02:03:32,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:03:32,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:03:32,635 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-07 02:03:32,644 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-07 02:03:32,668 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:03:32,673 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:03:33,601 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,635 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:33,640 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:03:34,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:03:34,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:03:34,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:03:34,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:03:34,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:03:34,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:03:34,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:03:34,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:03:34,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:03:34,257 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:03:34,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:34,503 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:03:34,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:03:34,554 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-07 02:03:34,554 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-07 02:03:34,556 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:03:34,557 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:03:34,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:03:34,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:03:34,671 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:03:34,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:03:34,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:03:34,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:03:34,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:03:34,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:03:34,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:03:34,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:03:34,730 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:03:34,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:34,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:34,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:03:34,949 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-07 02:03:34,950 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_dce66630-c16c-45dd-86a2-e93806289a07/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-07 02:03:34,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:03:34,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:03:35,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,021 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,021 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:03:35,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:03:35,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:03:35,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:03:35,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:03:35,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:03:35,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:03:35,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:03:35,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:03:35,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:03:35,083 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:03:35,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:03:35,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:35,760 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:03:35,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35 WrapperNode [2021-11-07 02:03:35,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:35,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:03:35,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:03:35,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:03:35,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:35,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:03:36,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:03:36,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:03:36,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:03:36,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:03:36,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:03:36,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:03:36,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:03:36,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (1/1) ... [2021-11-07 02:03:36,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:36,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:03:36,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:03:36,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:03:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:03:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:03:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:03:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:03:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:03:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:03:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:03:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:03:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:03:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:03:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:03:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:03:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:03:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:03:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:03:51,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:03:51,167 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-07 02:03:51,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:51 BoogieIcfgContainer [2021-11-07 02:03:51,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:03:51,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:03:51,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:03:51,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:03:51,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:03:32" (1/3) ... [2021-11-07 02:03:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8c42bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:51, skipping insertion in model container [2021-11-07 02:03:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:35" (2/3) ... [2021-11-07 02:03:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8c42bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:51, skipping insertion in model container [2021-11-07 02:03:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:51" (3/3) ... [2021-11-07 02:03:51,178 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-07 02:03:51,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:03:51,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-07 02:03:51,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:03:51,240 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 02:03:51,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-07 02:03:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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 02:03:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:03:51,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:51,269 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] [2021-11-07 02:03:51,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:03:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196011, now seen corresponding path program 1 times [2021-11-07 02:03:51,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:51,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042804775] [2021-11-07 02:03:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:51,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:51,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:51,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:03:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:55,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:03:55,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:56,229 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 02:03:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:56,494 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 02:03:56,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:56,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042804775] [2021-11-07 02:03:56,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042804775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:56,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:56,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:03:56,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245253102] [2021-11-07 02:03:56,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:03:56,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:03:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:03:56,520 INFO L87 Difference]: Start difference. First operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 02:03:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:56,557 INFO L93 Difference]: Finished difference Result 516 states and 711 transitions. [2021-11-07 02:03:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:03:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-07 02:03:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:56,570 INFO L225 Difference]: With dead ends: 516 [2021-11-07 02:03:56,570 INFO L226 Difference]: Without dead ends: 255 [2021-11-07 02:03:56,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 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 02:03:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-07 02:03:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-07 02:03:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3529411764705883) internal successors, (322), 254 states have internal predecessors, (322), 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 02:03:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-11-07 02:03:56,625 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 43 [2021-11-07 02:03:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-11-07 02:03:56,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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 02:03:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-11-07 02:03:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:03:56,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:56,629 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] [2021-11-07 02:03:56,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:56,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:56,844 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:03:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1821286743, now seen corresponding path program 1 times [2021-11-07 02:03:56,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:56,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831531165] [2021-11-07 02:03:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:56,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:56,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:56,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:04:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:01,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:04:01,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:01,452 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 02:04:01,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:01,672 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 02:04:01,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:01,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831531165] [2021-11-07 02:04:01,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831531165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:01,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:01,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:04:01,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491290779] [2021-11-07 02:04:01,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:01,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:01,676 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:04:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:02,089 INFO L93 Difference]: Finished difference Result 484 states and 610 transitions. [2021-11-07 02:04:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:04:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2021-11-07 02:04:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:02,098 INFO L225 Difference]: With dead ends: 484 [2021-11-07 02:04:02,098 INFO L226 Difference]: Without dead ends: 255 [2021-11-07 02:04:02,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 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 02:04:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-07 02:04:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-07 02:04:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3403361344537814) internal successors, (319), 254 states have internal predecessors, (319), 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 02:04:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-07 02:04:02,134 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 43 [2021-11-07 02:04:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:02,134 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-07 02:04:02,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:04:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-07 02:04:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:04:02,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:02,142 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] [2021-11-07 02:04:02,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:02,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:02,365 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:04:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:02,365 INFO L85 PathProgramCache]: Analyzing trace with hash 704440679, now seen corresponding path program 1 times [2021-11-07 02:04:02,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:02,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379907094] [2021-11-07 02:04:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:02,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:02,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:02,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:04:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:06,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:04:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:06,971 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 02:04:06,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:07,183 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 02:04:07,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:07,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379907094] [2021-11-07 02:04:07,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379907094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:07,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:07,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:04:07,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122271108] [2021-11-07 02:04:07,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:07,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:04:07,186 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:04:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:07,604 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-11-07 02:04:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:04:07,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-07 02:04:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:07,607 INFO L225 Difference]: With dead ends: 535 [2021-11-07 02:04:07,608 INFO L226 Difference]: Without dead ends: 305 [2021-11-07 02:04:07,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 02:04:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-07 02:04:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 265. [2021-11-07 02:04:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 264 states have internal predecessors, (329), 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 02:04:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-11-07 02:04:07,626 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 55 [2021-11-07 02:04:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:07,626 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-11-07 02:04:07,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:04:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-11-07 02:04:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:04:07,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:07,629 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] [2021-11-07 02:04:07,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:07,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:07,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:04:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2076247977, now seen corresponding path program 1 times [2021-11-07 02:04:07,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:07,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282217543] [2021-11-07 02:04:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:07,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:07,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:07,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:04:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:12,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:04:12,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:12,483 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 02:04:12,930 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 02:04:12,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:13,300 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 02:04:13,630 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 02:04:13,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:13,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282217543] [2021-11-07 02:04:13,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282217543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:13,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:13,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 02:04:13,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243302749] [2021-11-07 02:04:13,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:04:13,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:04:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:04:13,632 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 02:04:20,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:20,675 INFO L93 Difference]: Finished difference Result 535 states and 668 transitions. [2021-11-07 02:04:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 02:04:20,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 55 [2021-11-07 02:04:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:20,680 INFO L225 Difference]: With dead ends: 535 [2021-11-07 02:04:20,680 INFO L226 Difference]: Without dead ends: 297 [2021-11-07 02:04:20,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-07 02:04:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-07 02:04:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 263. [2021-11-07 02:04:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 246 states have (on average 1.3252032520325203) internal successors, (326), 262 states have internal predecessors, (326), 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 02:04:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 326 transitions. [2021-11-07 02:04:20,696 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 326 transitions. Word has length 55 [2021-11-07 02:04:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:20,696 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 326 transitions. [2021-11-07 02:04:20,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 02:04:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 326 transitions. [2021-11-07 02:04:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:04:20,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:20,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:20,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:20,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:20,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:04:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash 759666527, now seen corresponding path program 1 times [2021-11-07 02:04:20,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:20,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475043438] [2021-11-07 02:04:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:20,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:20,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:20,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:20,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:04:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:25,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:04:25,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:25,445 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:04:25,446 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 02:04:25,702 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 02:04:25,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:26,207 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 02:04:26,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:26,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475043438] [2021-11-07 02:04:26,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475043438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:26,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:26,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 02:04:26,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853622306] [2021-11-07 02:04:26,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:04:26,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:04:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:04:26,209 INFO L87 Difference]: Start difference. First operand 263 states and 326 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 02:04:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:37,280 INFO L93 Difference]: Finished difference Result 776 states and 958 transitions. [2021-11-07 02:04:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:04:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:04:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:37,287 INFO L225 Difference]: With dead ends: 776 [2021-11-07 02:04:37,287 INFO L226 Difference]: Without dead ends: 533 [2021-11-07 02:04:37,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 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 02:04:37,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-07 02:04:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 296. [2021-11-07 02:04:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 279 states have (on average 1.3189964157706093) internal successors, (368), 295 states have internal predecessors, (368), 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 02:04:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 368 transitions. [2021-11-07 02:04:37,305 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 368 transitions. Word has length 59 [2021-11-07 02:04:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:37,305 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 368 transitions. [2021-11-07 02:04:37,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 02:04:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 368 transitions. [2021-11-07 02:04:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:04:37,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:37,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:37,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 02:04:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:37,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:04:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1183313249, now seen corresponding path program 1 times [2021-11-07 02:04:37,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:37,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676250775] [2021-11-07 02:04:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:37,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:37,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:37,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:04:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:41,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:04:41,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:42,137 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:04:42,137 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 02:04:42,698 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 02:04:42,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:43,269 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 02:04:43,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:43,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676250775] [2021-11-07 02:04:43,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676250775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:43,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:43,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 02:04:43,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487828193] [2021-11-07 02:04:43,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 02:04:43,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 02:04:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:04:43,273 INFO L87 Difference]: Start difference. First operand 296 states and 368 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 02:05:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:03,197 INFO L93 Difference]: Finished difference Result 1009 states and 1216 transitions. [2021-11-07 02:05:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 02:05:03,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:05:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:03,205 INFO L225 Difference]: With dead ends: 1009 [2021-11-07 02:05:03,205 INFO L226 Difference]: Without dead ends: 698 [2021-11-07 02:05:03,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 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 02:05:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-07 02:05:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 294. [2021-11-07 02:05:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2924187725631768) internal successors, (358), 293 states have internal predecessors, (358), 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 02:05:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 358 transitions. [2021-11-07 02:05:03,226 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 358 transitions. Word has length 59 [2021-11-07 02:05:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:03,226 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 358 transitions. [2021-11-07 02:05:03,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 02:05:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 358 transitions. [2021-11-07 02:05:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 02:05:03,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:03,229 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] [2021-11-07 02:05:03,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:03,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:03,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:05:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1762439080, now seen corresponding path program 1 times [2021-11-07 02:05:03,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:03,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41455462] [2021-11-07 02:05:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:03,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:03,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:03,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:05:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:07,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:08,094 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 02:05:08,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:08,347 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 02:05:08,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:08,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41455462] [2021-11-07 02:05:08,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41455462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:08,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:08,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:05:08,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829379260] [2021-11-07 02:05:08,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:05:08,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:05:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:05:08,349 INFO L87 Difference]: Start difference. First operand 294 states and 358 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:05:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:08,634 INFO L93 Difference]: Finished difference Result 539 states and 658 transitions. [2021-11-07 02:05:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:05:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-07 02:05:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:08,638 INFO L225 Difference]: With dead ends: 539 [2021-11-07 02:05:08,638 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 02:05:08,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 02:05:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 02:05:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-07 02:05:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2851985559566788) internal successors, (356), 293 states have internal predecessors, (356), 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 02:05:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2021-11-07 02:05:08,650 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 61 [2021-11-07 02:05:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:08,651 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2021-11-07 02:05:08,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:05:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2021-11-07 02:05:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 02:05:08,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:08,653 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 02:05:08,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:08,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:08,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:05:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash 895515731, now seen corresponding path program 1 times [2021-11-07 02:05:08,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:08,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747546788] [2021-11-07 02:05:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:08,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:08,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:08,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:08,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:05:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:13,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:13,888 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 02:05:13,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:14,196 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 02:05:14,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:14,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747546788] [2021-11-07 02:05:14,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747546788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:14,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:14,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:05:14,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268701660] [2021-11-07 02:05:14,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:05:14,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:14,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:05:14,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:05:14,198 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:14,655 INFO L93 Difference]: Finished difference Result 503 states and 610 transitions. [2021-11-07 02:05:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:05:14,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 02:05:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:14,660 INFO L225 Difference]: With dead ends: 503 [2021-11-07 02:05:14,660 INFO L226 Difference]: Without dead ends: 294 [2021-11-07 02:05:14,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:05:14,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-07 02:05:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-07 02:05:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 277 states have (on average 1.2743682310469313) internal successors, (353), 293 states have internal predecessors, (353), 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 02:05:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 353 transitions. [2021-11-07 02:05:14,677 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 353 transitions. Word has length 63 [2021-11-07 02:05:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:14,677 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 353 transitions. [2021-11-07 02:05:14,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 353 transitions. [2021-11-07 02:05:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 02:05:14,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:14,679 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] [2021-11-07 02:05:14,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:05:14,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:14,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:05:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1361244530, now seen corresponding path program 1 times [2021-11-07 02:05:14,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:14,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777825005] [2021-11-07 02:05:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:14,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:14,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:14,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:14,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:05:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:19,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:05:19,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:20,865 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:05:20,866 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 02:05:20,986 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 02:05:20,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:33,323 WARN L207 SmtUtils]: Spent 11.31 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 02:05:33,328 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 02:05:33,329 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 [2021-11-07 02:14:35,105 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 02:14:35,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:35,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777825005] [2021-11-07 02:14:35,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777825005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:35,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:35,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-07 02:14:35,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034362547] [2021-11-07 02:14:35,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:14:35,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:14:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:14:35,107 INFO L87 Difference]: Start difference. First operand 294 states and 353 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:44,397 INFO L93 Difference]: Finished difference Result 707 states and 841 transitions. [2021-11-07 02:14:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 02:14:44,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 02:14:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:44,402 INFO L225 Difference]: With dead ends: 707 [2021-11-07 02:14:44,402 INFO L226 Difference]: Without dead ends: 551 [2021-11-07 02:14:44,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-07 02:14:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-11-07 02:14:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 467. [2021-11-07 02:14:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 450 states have (on average 1.288888888888889) internal successors, (580), 466 states have internal predecessors, (580), 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 02:14:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 580 transitions. [2021-11-07 02:14:44,424 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 580 transitions. Word has length 65 [2021-11-07 02:14:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:44,424 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 580 transitions. [2021-11-07 02:14:44,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 580 transitions. [2021-11-07 02:14:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:14:44,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:44,426 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 02:14:44,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:44,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:44,648 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:14:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1462342980, now seen corresponding path program 1 times [2021-11-07 02:14:44,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:44,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545342965] [2021-11-07 02:14:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:44,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:44,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:44,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:44,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce66630-c16c-45dd-86a2-e93806289a07/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:14:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:49,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:14:49,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:50,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:14:50,150 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 02:14:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:50,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:04,545 WARN L207 SmtUtils]: Spent 13.09 s on a formula simplification. DAG size of input: 523 DAG size of output: 269 [2021-11-07 02:15:04,548 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-07 02:15:04,548 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 775