./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF --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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:31,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:31,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:31,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:31,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:31,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:31,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:31,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:31,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:31,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:31,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:31,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:31,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:31,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:31,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:31,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:31,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:31,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:31,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:31,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:31,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:31,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:31,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:31,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:31,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:31,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:31,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:31,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:31,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:31,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:31,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:31,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:31,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:31,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:31,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:31,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:31,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:31,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:31,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:31,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:31,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:31,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:29:31,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:31,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:31,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:31,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:31,941 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:31,941 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:31,941 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:31,941 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:29:31,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:31,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:31,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:29:31,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:29:31,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:31,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:29:31,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:29:31,943 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:29:31,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:31,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:29:31,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:31,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:31,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:31,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:31,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:31,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:31,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:31,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:31,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:31,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:31,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:31,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:31,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:31,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:31,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:29:31,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:29:31,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:31,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:31,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:31,950 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-13 01:29:32,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:32,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:32,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:32,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:32,344 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:32,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-13 01:29:32,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/26b065751/af29de128bf44845957ac34c9969f9fd/FLAGc9128c08c [2021-11-13 01:29:33,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:33,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-13 01:29:33,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/26b065751/af29de128bf44845957ac34c9969f9fd/FLAGc9128c08c [2021-11-13 01:29:33,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/26b065751/af29de128bf44845957ac34c9969f9fd [2021-11-13 01:29:33,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:33,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:33,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:33,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:33,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:33,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:33" (1/1) ... [2021-11-13 01:29:33,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e60ce4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:33, skipping insertion in model container [2021-11-13 01:29:33,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:33" (1/1) ... [2021-11-13 01:29:33,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:34,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:34,528 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-13 01:29:34,538 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-13 01:29:34,570 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:29:34,581 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:29:35,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:35,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:36,521 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:29:36,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:29:36,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:29:36,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:29:36,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:29:36,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:29:36,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:29:36,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:29:36,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:29:36,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:29:36,859 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:29:36,993 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:36,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:37,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:37,201 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) [2021-11-13 01:29:37,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54b3c775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:37, skipping insertion in model container [2021-11-13 01:29:37,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:37,204 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:29:37,207 INFO L158 Benchmark]: Toolchain (without parser) took 3280.03ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 50.7MB in the beginning and 62.0MB in the end (delta: -11.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-11-13 01:29:37,208 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 63.5MB in the beginning and 63.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:29:37,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3276.79ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 50.7MB in the beginning and 62.0MB in the end (delta: -11.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-11-13 01:29:37,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 63.5MB in the beginning and 63.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3276.79ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 50.7MB in the beginning and 62.0MB in the end (delta: -11.3MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF --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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:39,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:39,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:39,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:39,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:39,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:39,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:39,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:39,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:39,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:39,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:39,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:39,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:39,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:39,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:39,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:39,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:39,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:39,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:39,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:39,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:39,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:39,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:39,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:39,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:39,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:39,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:39,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:39,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:39,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:39,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:39,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:39,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:39,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:39,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:39,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:39,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:39,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:39,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:39,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:39,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:39,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:29:39,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:39,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:39,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:39,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:39,954 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:39,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:39,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:39,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:39,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:39,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:39,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:39,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:39,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:39,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:39,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:39,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:39,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:39,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:29:39,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:39,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:39,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:39,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:39,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:39,961 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:29:39,961 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:29:39,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:39,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:39,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:39,962 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-11-13 01:29:40,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:40,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:40,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:40,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:40,367 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:40,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-13 01:29:40,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/715784974/22e2439adaa44515916bf76d262c8262/FLAGf805df2da [2021-11-13 01:29:41,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:41,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-11-13 01:29:41,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/715784974/22e2439adaa44515916bf76d262c8262/FLAGf805df2da [2021-11-13 01:29:41,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/data/715784974/22e2439adaa44515916bf76d262c8262 [2021-11-13 01:29:41,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:41,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:41,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:41,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:41,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:41,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:41" (1/1) ... [2021-11-13 01:29:41,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dd27ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:41, skipping insertion in model container [2021-11-13 01:29:41,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:41" (1/1) ... [2021-11-13 01:29:41,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:42,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:42,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-13 01:29:42,325 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-13 01:29:42,351 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:29:42,357 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:29:43,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,505 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:43,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:29:44,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:29:44,074 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:29:44,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:29:44,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:29:44,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:29:44,080 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:29:44,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:29:44,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:29:44,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:29:44,342 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:29:44,494 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:44,785 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:29:44,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:44,880 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-13 01:29:44,881 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-13 01:29:44,891 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:29:44,895 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:29:44,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,993 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:44,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:29:45,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:29:45,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:29:45,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:29:45,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:29:45,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:29:45,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:29:45,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:29:45,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:29:45,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:29:45,101 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:29:45,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:45,291 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:29:45,305 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-11-13 01:29:45,306 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_a4db0c45-9746-4ca0-89e4-6c6f3056f902/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-11-13 01:29:45,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:29:45,320 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:29:45,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,401 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:29:45,402 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:29:45,403 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:29:45,404 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:29:45,404 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:29:45,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:29:45,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:29:45,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:29:45,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:29:45,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:29:45,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:29:45,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:29:45,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:46,016 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:29:46,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46 WrapperNode [2021-11-13 01:29:46,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:46,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:46,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:29:46,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:29:46,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:46,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:29:46,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:29:46,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:29:46,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:29:46,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:29:46,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:29:46,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:29:46,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (1/1) ... [2021-11-13 01:29:46,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:46,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:29:46,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:29:46,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:29:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-13 01:29:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-13 01:29:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:29:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:29:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-13 01:29:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-13 01:29:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:29:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:29:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:29:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:29:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:29:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:29:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:29:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:29:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:29:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:29:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:29:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:29:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:29:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:29:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:29:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:29:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:29:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:29:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:29:46,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:29:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:29:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:29:46,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-13 01:29:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-13 01:29:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:29:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:29:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:29:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:29:46,564 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:29:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:29:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:30:03,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:30:03,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:30:03,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:03 BoogieIcfgContainer [2021-11-13 01:30:03,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:30:03,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:30:03,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:30:03,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:30:03,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:41" (1/3) ... [2021-11-13 01:30:03,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc06ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:03, skipping insertion in model container [2021-11-13 01:30:03,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:46" (2/3) ... [2021-11-13 01:30:03,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc06ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:03, skipping insertion in model container [2021-11-13 01:30:03,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:03" (3/3) ... [2021-11-13 01:30:03,280 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-11-13 01:30:03,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:30:03,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:30:03,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:30:03,359 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 [2021-11-13 01:30:03,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:30:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 01:30:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:30:03,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:03,397 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:03,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1615832393, now seen corresponding path program 1 times [2021-11-13 01:30:03,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:03,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645921174] [2021-11-13 01:30:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:03,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:03,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:03,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:03,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:30:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:08,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:30:08,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:09,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:09,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645921174] [2021-11-13 01:30:09,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645921174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:09,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:09,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:30:09,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150812759] [2021-11-13 01:30:09,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:09,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:09,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:09,112 INFO L87 Difference]: Start difference. First operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:30:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:09,289 INFO L93 Difference]: Finished difference Result 256 states and 357 transitions. [2021-11-13 01:30:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:30:09,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 72 [2021-11-13 01:30:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:09,302 INFO L225 Difference]: With dead ends: 256 [2021-11-13 01:30:09,303 INFO L226 Difference]: Without dead ends: 129 [2021-11-13 01:30:09,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:09,310 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 51 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:09,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 123.68ms Time] [2021-11-13 01:30:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-13 01:30:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-13 01:30:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.255813953488372) internal successors, (108), 88 states have internal predecessors, (108), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-13 01:30:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2021-11-13 01:30:09,361 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 72 [2021-11-13 01:30:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2021-11-13 01:30:09,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:30:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2021-11-13 01:30:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:30:09,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:09,367 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:09,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:09,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:09,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 170819548, now seen corresponding path program 1 times [2021-11-13 01:30:09,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:09,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549166919] [2021-11-13 01:30:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:09,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:09,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:30:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:13,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:30:13,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:30:14,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:14,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:14,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549166919] [2021-11-13 01:30:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549166919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:14,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:14,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:30:14,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14514766] [2021-11-13 01:30:14,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:14,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:14,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:14,512 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 01:30:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:14,606 INFO L93 Difference]: Finished difference Result 238 states and 319 transitions. [2021-11-13 01:30:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:30:14,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2021-11-13 01:30:14,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:14,609 INFO L225 Difference]: With dead ends: 238 [2021-11-13 01:30:14,610 INFO L226 Difference]: Without dead ends: 151 [2021-11-13 01:30:14,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:14,612 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 42 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:14,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 501 Invalid, 15 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 56.51ms Time] [2021-11-13 01:30:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-13 01:30:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-11-13 01:30:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.25) internal successors, (110), 90 states have internal predecessors, (110), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-13 01:30:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2021-11-13 01:30:14,636 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 78 [2021-11-13 01:30:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:14,636 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2021-11-13 01:30:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 01:30:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2021-11-13 01:30:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:30:14,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:14,649 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:14,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:14,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:14,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1200987750, now seen corresponding path program 1 times [2021-11-13 01:30:14,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:14,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13821864] [2021-11-13 01:30:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:14,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:14,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:14,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:14,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:30:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:19,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:19,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:30:19,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:19,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:19,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13821864] [2021-11-13 01:30:19,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13821864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:19,724 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:19,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:30:19,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767212176] [2021-11-13 01:30:19,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:19,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:19,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:19,726 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 01:30:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:19,895 INFO L93 Difference]: Finished difference Result 240 states and 320 transitions. [2021-11-13 01:30:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:30:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2021-11-13 01:30:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:19,898 INFO L225 Difference]: With dead ends: 240 [2021-11-13 01:30:19,898 INFO L226 Difference]: Without dead ends: 151 [2021-11-13 01:30:19,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:19,900 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 650 Invalid, 27 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 94.00ms Time] [2021-11-13 01:30:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-13 01:30:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2021-11-13 01:30:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 92 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-13 01:30:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2021-11-13 01:30:19,929 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 78 [2021-11-13 01:30:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2021-11-13 01:30:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 01:30:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2021-11-13 01:30:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:30:19,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:19,933 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:19,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:20,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:20,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -77326946, now seen corresponding path program 1 times [2021-11-13 01:30:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:20,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057342833] [2021-11-13 01:30:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:20,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:20,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:20,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:30:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:24,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:30:24,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:24,751 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 [2021-11-13 01:30:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:30:25,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:26,633 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 [2021-11-13 01:30:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:27,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:27,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057342833] [2021-11-13 01:30:27,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057342833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:27,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:27,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 19 [2021-11-13 01:30:27,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852232043] [2021-11-13 01:30:27,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:27,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 01:30:27,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 01:30:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:30:27,013 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-13 01:30:29,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:31,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:33,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:35,018 INFO L93 Difference]: Finished difference Result 254 states and 330 transitions. [2021-11-13 01:30:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 01:30:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 78 [2021-11-13 01:30:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:35,021 INFO L225 Difference]: With dead ends: 254 [2021-11-13 01:30:35,021 INFO L226 Difference]: Without dead ends: 156 [2021-11-13 01:30:35,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:30:35,023 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 203 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 58 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7502.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.15ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 7696.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:35,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1595 Invalid, 418 Unknown, 0 Unchecked, 12.15ms Time], IncrementalHoareTripleChecker [58 Valid, 235 Invalid, 3 Unknown, 122 Unchecked, 7696.49ms Time] [2021-11-13 01:30:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-13 01:30:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2021-11-13 01:30:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.25) internal successors, (120), 97 states have internal predecessors, (120), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-11-13 01:30:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2021-11-13 01:30:35,041 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 78 [2021-11-13 01:30:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:35,042 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2021-11-13 01:30:35,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-13 01:30:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2021-11-13 01:30:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:30:35,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:35,044 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:35,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:35,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:35,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1681909330, now seen corresponding path program 1 times [2021-11-13 01:30:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:35,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183606926] [2021-11-13 01:30:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:35,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:35,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:35,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:30:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:39,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:30:39,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 01:30:39,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-13 01:30:40,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:40,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183606926] [2021-11-13 01:30:40,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183606926] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:30:40,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:30:40,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:30:40,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886998779] [2021-11-13 01:30:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:40,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:30:40,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:30:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:30:40,254 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:30:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:40,655 INFO L93 Difference]: Finished difference Result 239 states and 312 transitions. [2021-11-13 01:30:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:30:40,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2021-11-13 01:30:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:40,659 INFO L225 Difference]: With dead ends: 239 [2021-11-13 01:30:40,659 INFO L226 Difference]: Without dead ends: 147 [2021-11-13 01:30:40,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:30:40,661 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 309.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:40,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1191 Invalid, 132 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 309.28ms Time] [2021-11-13 01:30:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-13 01:30:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-11-13 01:30:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 100 states have (on average 1.24) internal successors, (124), 102 states have internal predecessors, (124), 31 states have call successors, (31), 11 states have call predecessors, (31), 12 states have return successors, (33), 30 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-13 01:30:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2021-11-13 01:30:40,679 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 82 [2021-11-13 01:30:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:40,679 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2021-11-13 01:30:40,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:30:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2021-11-13 01:30:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:30:40,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:40,681 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:40,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 01:30:40,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:40,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1833255661, now seen corresponding path program 1 times [2021-11-13 01:30:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:40,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738137733] [2021-11-13 01:30:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:40,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:40,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:40,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:40,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:30:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:30:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 01:30:45,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:45,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:45,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738137733] [2021-11-13 01:30:45,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738137733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:45,604 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:45,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 01:30:45,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086931943] [2021-11-13 01:30:45,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:45,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:30:45,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:30:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:30:45,607 INFO L87 Difference]: Start difference. First operand 144 states and 188 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-13 01:30:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:46,068 INFO L93 Difference]: Finished difference Result 258 states and 344 transitions. [2021-11-13 01:30:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:30:46,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 84 [2021-11-13 01:30:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:46,072 INFO L225 Difference]: With dead ends: 258 [2021-11-13 01:30:46,072 INFO L226 Difference]: Without dead ends: 177 [2021-11-13 01:30:46,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:30:46,073 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 67 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 288.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:46,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 859 Invalid, 84 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [36 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 288.51ms Time] [2021-11-13 01:30:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-13 01:30:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2021-11-13 01:30:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-13 01:30:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 207 transitions. [2021-11-13 01:30:46,092 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 207 transitions. Word has length 84 [2021-11-13 01:30:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:46,093 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 207 transitions. [2021-11-13 01:30:46,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-13 01:30:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 207 transitions. [2021-11-13 01:30:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 01:30:46,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:46,095 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:46,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:46,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:46,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash 27817327, now seen corresponding path program 1 times [2021-11-13 01:30:46,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:46,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321426621] [2021-11-13 01:30:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:46,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:46,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:46,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:30:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:51,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:51,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:52,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:30:52,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:52,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321426621] [2021-11-13 01:30:52,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321426621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:52,502 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:52,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:30:52,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044753673] [2021-11-13 01:30:52,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:52,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:52,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:52,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:52,504 INFO L87 Difference]: Start difference. First operand 156 states and 207 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:30:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:52,636 INFO L93 Difference]: Finished difference Result 270 states and 363 transitions. [2021-11-13 01:30:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:52,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2021-11-13 01:30:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:52,642 INFO L225 Difference]: With dead ends: 270 [2021-11-13 01:30:52,643 INFO L226 Difference]: Without dead ends: 204 [2021-11-13 01:30:52,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:52,644 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 12 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.41ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:52,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 512 Invalid, 14 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 109.41ms Time] [2021-11-13 01:30:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-13 01:30:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2021-11-13 01:30:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 140 states have internal predecessors, (170), 51 states have call successors, (51), 11 states have call predecessors, (51), 12 states have return successors, (59), 50 states have call predecessors, (59), 50 states have call successors, (59) [2021-11-13 01:30:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 280 transitions. [2021-11-13 01:30:52,672 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 280 transitions. Word has length 84 [2021-11-13 01:30:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:52,673 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 280 transitions. [2021-11-13 01:30:52,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:30:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 280 transitions. [2021-11-13 01:30:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 01:30:52,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:52,676 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:52,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:52,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:52,901 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash -134353604, now seen corresponding path program 1 times [2021-11-13 01:30:52,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:52,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844930502] [2021-11-13 01:30:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:52,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:52,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:52,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:52,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:30:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:58,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 01:30:58,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:31:02,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:13,313 WARN L227 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:31:13,317 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-13 01:31:13,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771 [2021-11-13 01:41:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:41:53,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:53,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844930502] [2021-11-13 01:41:53,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844930502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:53,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261421477] [2021-11-13 01:41:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:53,166 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:53,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:53,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 01:42:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 01:42:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:01,695 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 19 treesize of output 1 [2021-11-13 01:42:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:42:03,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:42:06,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [261421477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:06,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243829748] [2021-11-13 01:42:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:06,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:42:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:06,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:42:06,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 01:42:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:42:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:08,043 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 19 treesize of output 1 [2021-11-13 01:42:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:42:09,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:42:12,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243829748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:12,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:42:12,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13, 10, 13, 10] total 20 [2021-11-13 01:42:12,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711729550] [2021-11-13 01:42:12,363 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:42:12,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:42:12,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:42:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:42:12,366 INFO L87 Difference]: Start difference. First operand 202 states and 280 transitions. Second operand has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-13 01:42:14,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:16,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:18,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:20,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:22,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:24,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:26,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:43,049 WARN L227 SmtUtils]: Spent 14.18s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:42:55,322 WARN L227 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:43:16,388 WARN L227 SmtUtils]: Spent 14.21s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 01:43:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:19,036 INFO L93 Difference]: Finished difference Result 354 states and 509 transitions. [2021-11-13 01:43:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-13 01:43:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 100 [2021-11-13 01:43:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:19,041 INFO L225 Difference]: With dead ends: 354 [2021-11-13 01:43:19,041 INFO L226 Difference]: Without dead ends: 335 [2021-11-13 01:43:19,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 554 SyntacticMatches, 26 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 49.1s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-11-13 01:43:19,043 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 199 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22215.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.16ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 23053.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:19,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 1982 Invalid, 800 Unknown, 0 Unchecked, 11.16ms Time], IncrementalHoareTripleChecker [24 Valid, 593 Invalid, 7 Unknown, 176 Unchecked, 23053.31ms Time] [2021-11-13 01:43:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-13 01:43:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 315. [2021-11-13 01:43:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 217 states have (on average 1.2304147465437787) internal successors, (267), 219 states have internal predecessors, (267), 81 states have call successors, (81), 14 states have call predecessors, (81), 16 states have return successors, (110), 81 states have call predecessors, (110), 80 states have call successors, (110) [2021-11-13 01:43:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 458 transitions. [2021-11-13 01:43:19,077 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 458 transitions. Word has length 100 [2021-11-13 01:43:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:19,078 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 458 transitions. [2021-11-13 01:43:19,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.65) internal successors, (113), 20 states have internal predecessors, (113), 6 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-13 01:43:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 458 transitions. [2021-11-13 01:43:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 01:43:19,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:19,081 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:19,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:19,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-13 01:43:19,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:19,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:19,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 123811834, now seen corresponding path program 1 times [2021-11-13 01:43:19,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:19,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087297442] [2021-11-13 01:43:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:19,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:19,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:19,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:19,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4db0c45-9746-4ca0-89e4-6c6f3056f902/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process