./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:27:02,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:27:02,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:27:02,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:27:02,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:27:02,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:27:02,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:27:02,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:27:02,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:27:02,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:27:02,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:27:02,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:27:02,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:27:02,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:27:02,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:27:02,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:27:02,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:27:02,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:27:02,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:27:02,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:27:02,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:27:02,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:27:02,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:27:02,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:27:02,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:27:02,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:27:02,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:27:02,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:27:02,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:27:02,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:27:02,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:27:02,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:27:02,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:27:02,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:27:02,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:27:02,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:27:02,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:27:02,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:27:02,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:27:02,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:27:02,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:27:02,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:27:02,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:27:02,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:27:02,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:27:02,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:27:02,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:27:02,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:27:02,444 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:27:02,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:27:02,445 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:27:02,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:27:02,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:27:02,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:27:02,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:27:02,446 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:27:02,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:27:02,446 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:27:02,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:27:02,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:27:02,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:27:02,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:27:02,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:27:02,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:27:02,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:27:02,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:27:02,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:27:02,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:27:02,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:27:02,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:27:02,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:02,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:27:02,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:27:02,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:27:02,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:27:02,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:27:02,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:27:02,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:27:02,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:27:02,452 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2021-11-12 22:27:02,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:27:02,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:27:02,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:27:02,728 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:27:02,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:27:02,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-12 22:27:02,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/f4fd60f7f/14920c1307904439b6a61c9cc9d8a413/FLAG45cddfc46 [2021-11-12 22:27:03,670 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:27:03,671 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-12 22:27:03,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/f4fd60f7f/14920c1307904439b6a61c9cc9d8a413/FLAG45cddfc46 [2021-11-12 22:27:04,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/f4fd60f7f/14920c1307904439b6a61c9cc9d8a413 [2021-11-12 22:27:04,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:27:04,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:27:04,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:04,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:27:04,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:27:04,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:04" (1/1) ... [2021-11-12 22:27:04,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df6d4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:04, skipping insertion in model container [2021-11-12 22:27:04,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:04" (1/1) ... [2021-11-12 22:27:04,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:27:04,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:04,597 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-12 22:27:04,604 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-12 22:27:04,626 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:27:04,631 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:27:05,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:05,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:27:05,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:27:05,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:27:05,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:27:05,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:27:05,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:27:05,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:27:05,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:27:05,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:27:05,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:27:06,131 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:27:06,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:06,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:06,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:06,400 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) [2021-11-12 22:27:06,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d069e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:06, skipping insertion in model container [2021-11-12 22:27:06,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:06,403 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:27:06,405 INFO L158 Benchmark]: Toolchain (without parser) took 2210.98ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 59.5MB in the beginning and 82.6MB in the end (delta: -23.1MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-11-12 22:27:06,406 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:27:06,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2206.46ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 59.4MB in the beginning and 82.6MB in the end (delta: -23.3MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2021-11-12 22:27:06,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2206.46ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 59.4MB in the beginning and 82.6MB in the end (delta: -23.3MB). Peak memory consumption was 36.2MB. 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:27:08,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:27:08,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:27:08,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:27:08,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:27:08,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:27:08,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:27:08,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:27:08,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:27:08,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:27:08,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:27:08,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:27:08,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:27:08,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:27:08,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:27:08,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:27:08,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:27:08,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:27:08,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:27:08,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:27:08,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:27:08,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:27:08,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:27:08,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:27:08,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:27:08,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:27:08,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:27:08,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:27:08,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:27:08,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:27:08,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:27:08,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:27:08,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:27:08,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:27:08,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:27:08,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:27:08,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:27:08,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:27:08,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:27:08,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:27:08,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:27:08,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:27:08,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:27:08,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:27:08,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:27:08,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:27:08,908 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:27:08,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:27:08,909 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:27:08,909 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:27:08,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:27:08,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:27:08,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:27:08,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:27:08,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:27:08,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:27:08,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:27:08,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:27:08,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:27:08,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:27:08,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:27:08,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:27:08,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:27:08,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:27:08,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:27:08,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:27:08,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:08,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:27:08,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:27:08,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:27:08,917 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:27:08,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:27:08,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:27:08,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:27:08,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:27:08,918 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2021-11-12 22:27:09,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:27:09,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:27:09,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:27:09,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:27:09,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:27:09,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-12 22:27:09,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/c4b678920/15e91f5fd12a40cf8cfe9add259b0a4d/FLAG0710f4065 [2021-11-12 22:27:10,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:27:10,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-12 22:27:10,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/c4b678920/15e91f5fd12a40cf8cfe9add259b0a4d/FLAG0710f4065 [2021-11-12 22:27:10,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/data/c4b678920/15e91f5fd12a40cf8cfe9add259b0a4d [2021-11-12 22:27:10,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:27:10,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:27:10,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:10,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:27:10,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:27:10,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:10" (1/1) ... [2021-11-12 22:27:10,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccba2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:10, skipping insertion in model container [2021-11-12 22:27:10,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:27:10" (1/1) ... [2021-11-12 22:27:10,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:27:10,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:11,228 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-12 22:27:11,247 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-12 22:27:11,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:27:11,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:27:12,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,328 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:12,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:27:12,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:27:12,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:27:12,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:27:12,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:27:12,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:27:12,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:27:12,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:27:12,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:27:12,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:27:12,969 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:27:13,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:13,338 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:27:13,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:27:13,449 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-12 22:27:13,450 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-12 22:27:13,459 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:27:13,460 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:27:13,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,512 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,525 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:27:13,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:27:13,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:27:13,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:27:13,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:27:13,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:27:13,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:27:13,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:27:13,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:27:13,617 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:27:13,643 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:27:13,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:13,832 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:27:13,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2021-11-12 22:27:13,858 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_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2021-11-12 22:27:13,860 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:27:13,861 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:27:13,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,912 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:13,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:27:13,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:27:13,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:27:13,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:27:13,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:27:13,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:27:13,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:27:13,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:27:13,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:27:13,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:27:14,013 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:27:14,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:14,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:27:14,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:27:14,515 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:27:14,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14 WrapperNode [2021-11-12 22:27:14,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:27:14,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:27:14,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:27:14,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:27:14,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:27:14,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:27:14,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:27:14,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:27:14,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:27:14,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:27:14,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:27:14,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:27:14,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (1/1) ... [2021-11-12 22:27:14,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:27:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:27:14,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:27:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:27:14,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 22:27:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:27:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:27:14,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:27:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:27:14,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:27:14,968 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 22:27:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 22:27:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:27:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 22:27:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 22:27:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-12 22:27:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-12 22:27:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:27:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:27:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:27:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:27:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:27:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 22:27:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 22:27:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:27:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:27:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:27:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 22:27:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 22:27:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:27:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:27:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-12 22:27:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-12 22:27:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:27:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:27:14,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:27:14,973 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:27:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:27:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:27:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:27:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-12 22:27:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-12 22:27:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-11-12 22:27:14,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-11-12 22:27:30,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:27:30,441 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:27:30,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:27:30 BoogieIcfgContainer [2021-11-12 22:27:30,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:27:30,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:27:30,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:27:30,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:27:30,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:27:10" (1/3) ... [2021-11-12 22:27:30,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0e27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:27:30, skipping insertion in model container [2021-11-12 22:27:30,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:27:14" (2/3) ... [2021-11-12 22:27:30,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a0e27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:27:30, skipping insertion in model container [2021-11-12 22:27:30,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:27:30" (3/3) ... [2021-11-12 22:27:30,460 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2021-11-12 22:27:30,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:27:30,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:27:30,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:27:30,531 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 [2021-11-12 22:27:30,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:27:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-12 22:27:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:27:30,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:30,586 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:30,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -170695640, now seen corresponding path program 1 times [2021-11-12 22:27:30,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:30,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714267405] [2021-11-12 22:27:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:30,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:30,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:30,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:27:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:35,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:27:35,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-12 22:27:36,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-12 22:27:36,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:36,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714267405] [2021-11-12 22:27:36,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714267405] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:36,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:36,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:27:36,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443024075] [2021-11-12 22:27:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:36,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:27:36,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:27:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:27:36,654 INFO L87 Difference]: Start difference. First operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:27:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:36,709 INFO L93 Difference]: Finished difference Result 346 states and 501 transitions. [2021-11-12 22:27:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:27:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 156 [2021-11-12 22:27:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:36,729 INFO L225 Difference]: With dead ends: 346 [2021-11-12 22:27:36,734 INFO L226 Difference]: Without dead ends: 170 [2021-11-12 22:27:36,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:27:36,744 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:36,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:27:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-12 22:27:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-12 22:27:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 101 states have (on average 1.198019801980198) internal successors, (121), 103 states have internal predecessors, (121), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-12 22:27:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2021-11-12 22:27:36,855 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 156 [2021-11-12 22:27:36,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:36,857 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2021-11-12 22:27:36,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:27:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2021-11-12 22:27:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:27:36,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:36,875 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:36,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:37,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1949598816, now seen corresponding path program 1 times [2021-11-12 22:27:37,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:37,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113093643] [2021-11-12 22:27:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:37,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:37,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:37,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:27:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:27:41,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-12 22:27:42,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-12 22:27:43,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:43,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113093643] [2021-11-12 22:27:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113093643] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:43,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:43,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:27:43,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773356423] [2021-11-12 22:27:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:43,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:27:43,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:43,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:27:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:27:43,177 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:27:45,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:27:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:45,559 INFO L93 Difference]: Finished difference Result 336 states and 452 transitions. [2021-11-12 22:27:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:27:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 156 [2021-11-12 22:27:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:45,569 INFO L225 Difference]: With dead ends: 336 [2021-11-12 22:27:45,569 INFO L226 Difference]: Without dead ends: 173 [2021-11-12 22:27:45,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:27:45,573 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 25 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2255.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2326.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 609 Invalid, 48 Unknown, 0 Unchecked, 10.16ms Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2326.41ms Time] [2021-11-12 22:27:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-12 22:27:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-12 22:27:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:27:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 236 transitions. [2021-11-12 22:27:45,605 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 236 transitions. Word has length 156 [2021-11-12 22:27:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:45,606 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 236 transitions. [2021-11-12 22:27:45,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:27:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 236 transitions. [2021-11-12 22:27:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-12 22:27:45,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:45,611 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:45,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:45,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:45,835 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash -71903277, now seen corresponding path program 1 times [2021-11-12 22:27:45,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:45,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452790012] [2021-11-12 22:27:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:45,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:45,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:45,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:45,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:27:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:50,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:27:50,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-12 22:27:50,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-12 22:27:51,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:27:51,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452790012] [2021-11-12 22:27:51,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452790012] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:27:51,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:27:51,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:27:51,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662446513] [2021-11-12 22:27:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:27:51,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:27:51,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:27:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:27:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:27:51,475 INFO L87 Difference]: Start difference. First operand 173 states and 236 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:27:51,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:51,601 INFO L93 Difference]: Finished difference Result 349 states and 485 transitions. [2021-11-12 22:27:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:27:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2021-11-12 22:27:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:51,614 INFO L225 Difference]: With dead ends: 349 [2021-11-12 22:27:51,615 INFO L226 Difference]: Without dead ends: 183 [2021-11-12 22:27:51,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:27:51,621 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 29 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:51,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 659 Invalid, 15 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 65.88ms Time] [2021-11-12 22:27:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-12 22:27:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2021-11-12 22:27:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:27:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2021-11-12 22:27:51,675 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 162 [2021-11-12 22:27:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:51,676 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2021-11-12 22:27:51,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:27:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2021-11-12 22:27:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-12 22:27:51,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:51,684 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:51,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:51,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:27:51,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:27:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1018941163, now seen corresponding path program 1 times [2021-11-12 22:27:51,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:51,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592230600] [2021-11-12 22:27:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:51,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:51,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:51,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:27:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:56,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:27:56,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:56,673 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 [2021-11-12 22:27:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-12 22:27:58,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:00,168 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 [2021-11-12 22:28:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-12 22:28:00,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592230600] [2021-11-12 22:28:00,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592230600] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:00,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:00,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2021-11-12 22:28:00,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373376040] [2021-11-12 22:28:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:00,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:28:00,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:28:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:28:00,389 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-12 22:28:02,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:05,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:28:05,498 INFO L93 Difference]: Finished difference Result 359 states and 484 transitions. [2021-11-12 22:28:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:28:05,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 162 [2021-11-12 22:28:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:28:05,503 INFO L225 Difference]: With dead ends: 359 [2021-11-12 22:28:05,503 INFO L226 Difference]: Without dead ends: 184 [2021-11-12 22:28:05,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:28:05,505 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 34 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4816.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.18ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 4982.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:28:05,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1237 Invalid, 112 Unknown, 0 Unchecked, 9.18ms Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 2 Unknown, 44 Unchecked, 4982.03ms Time] [2021-11-12 22:28:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-12 22:28:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2021-11-12 22:28:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:28:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 245 transitions. [2021-11-12 22:28:05,531 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 245 transitions. Word has length 162 [2021-11-12 22:28:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:28:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 245 transitions. [2021-11-12 22:28:05,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-12 22:28:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 245 transitions. [2021-11-12 22:28:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:28:05,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:28:05,545 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:28:05,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 22:28:05,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:28:05,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:28:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:28:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 597836491, now seen corresponding path program 1 times [2021-11-12 22:28:05,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:28:05,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644387733] [2021-11-12 22:28:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:28:05,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:28:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:28:05,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:28:05,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:28:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:28:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:28:10,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-12 22:28:11,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-12 22:28:12,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:12,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644387733] [2021-11-12 22:28:12,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644387733] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:12,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:12,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 22:28:12,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265218622] [2021-11-12 22:28:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:12,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:28:12,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:28:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:28:12,284 INFO L87 Difference]: Start difference. First operand 180 states and 245 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:28:14,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:16,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:19,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:21,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:28:22,398 INFO L93 Difference]: Finished difference Result 368 states and 516 transitions. [2021-11-12 22:28:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:28:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 166 [2021-11-12 22:28:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:28:22,405 INFO L225 Difference]: With dead ends: 368 [2021-11-12 22:28:22,405 INFO L226 Difference]: Without dead ends: 200 [2021-11-12 22:28:22,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:28:22,408 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 42 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9606.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 9910.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:28:22,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 806 Invalid, 152 Unknown, 0 Unchecked, 5.63ms Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 4 Unknown, 50 Unchecked, 9910.06ms Time] [2021-11-12 22:28:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-12 22:28:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2021-11-12 22:28:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 121 states have internal predecessors, (144), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:28:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2021-11-12 22:28:22,430 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 166 [2021-11-12 22:28:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:28:22,431 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2021-11-12 22:28:22,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:28:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2021-11-12 22:28:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:28:22,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:28:22,435 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:28:22,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:28:22,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:28:22,651 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:28:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:28:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -108760115, now seen corresponding path program 1 times [2021-11-12 22:28:22,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:28:22,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907761468] [2021-11-12 22:28:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:28:22,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:28:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:28:22,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:28:22,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:28:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:28:27,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:28:27,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-12 22:28:29,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2021-11-12 22:28:32,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:32,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907761468] [2021-11-12 22:28:32,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907761468] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:32,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:32,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:28:32,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501791292] [2021-11-12 22:28:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:32,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:28:32,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:28:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:28:32,502 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:28:34,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:36,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:42,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:44,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:28:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:28:45,815 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2021-11-12 22:28:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:28:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 166 [2021-11-12 22:28:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:28:45,823 INFO L225 Difference]: With dead ends: 376 [2021-11-12 22:28:45,823 INFO L226 Difference]: Without dead ends: 198 [2021-11-12 22:28:45,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:28:45,825 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 38 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10893.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 11361.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:28:45,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2088 Invalid, 674 Unknown, 0 Unchecked, 12.70ms Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 4 Unknown, 384 Unchecked, 11361.02ms Time] [2021-11-12 22:28:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-12 22:28:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2021-11-12 22:28:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 123 states have internal predecessors, (144), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:28:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 257 transitions. [2021-11-12 22:28:45,852 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 257 transitions. Word has length 166 [2021-11-12 22:28:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:28:45,854 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 257 transitions. [2021-11-12 22:28:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:28:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 257 transitions. [2021-11-12 22:28:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-12 22:28:45,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:28:45,858 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:28:45,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:28:46,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:28:46,075 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:28:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:28:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1272996617, now seen corresponding path program 1 times [2021-11-12 22:28:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:28:46,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40464384] [2021-11-12 22:28:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:28:46,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:28:46,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:28:46,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:28:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:28:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:28:50,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:28:50,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-12 22:28:51,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2021-11-12 22:28:51,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:51,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40464384] [2021-11-12 22:28:51,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40464384] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:51,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:51,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:28:51,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648032167] [2021-11-12 22:28:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:51,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:28:51,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:28:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:28:51,991 INFO L87 Difference]: Start difference. First operand 191 states and 257 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:28:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:28:52,725 INFO L93 Difference]: Finished difference Result 380 states and 522 transitions. [2021-11-12 22:28:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:28:52,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 166 [2021-11-12 22:28:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:28:52,730 INFO L225 Difference]: With dead ends: 380 [2021-11-12 22:28:52,730 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 22:28:52,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:28:52,733 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 12 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 586.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:28:52,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1613 Invalid, 182 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 586.52ms Time] [2021-11-12 22:28:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 22:28:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 191. [2021-11-12 22:28:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 123 states have internal predecessors, (144), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2021-11-12 22:28:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 257 transitions. [2021-11-12 22:28:52,759 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 257 transitions. Word has length 166 [2021-11-12 22:28:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:28:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 257 transitions. [2021-11-12 22:28:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:28:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 257 transitions. [2021-11-12 22:28:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-12 22:28:52,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:28:52,763 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:28:52,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:28:52,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:28:52,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:28:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:28:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -264674876, now seen corresponding path program 1 times [2021-11-12 22:28:52,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:28:52,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471763369] [2021-11-12 22:28:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:28:52,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:28:52,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:28:52,992 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:28:52,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:28:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:28:57,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:28:57,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:28:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-12 22:28:58,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:28:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-12 22:28:58,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:28:58,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471763369] [2021-11-12 22:28:58,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471763369] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:28:58,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:28:58,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:28:58,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669134247] [2021-11-12 22:28:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:28:58,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:28:58,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:28:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:28:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:28:58,786 INFO L87 Difference]: Start difference. First operand 191 states and 257 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:00,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:01,106 INFO L93 Difference]: Finished difference Result 342 states and 470 transitions. [2021-11-12 22:29:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:01,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 168 [2021-11-12 22:29:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:01,109 INFO L225 Difference]: With dead ends: 342 [2021-11-12 22:29:01,109 INFO L226 Difference]: Without dead ends: 194 [2021-11-12 22:29:01,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:01,112 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 23 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2258.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2302.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:01,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 617 Invalid, 44 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 2302.99ms Time] [2021-11-12 22:29:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-12 22:29:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-12 22:29:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 126 states have internal predecessors, (146), 53 states have call successors, (53), 16 states have call predecessors, (53), 17 states have return successors, (67), 52 states have call predecessors, (67), 52 states have call successors, (67) [2021-11-12 22:29:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 266 transitions. [2021-11-12 22:29:01,130 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 266 transitions. Word has length 168 [2021-11-12 22:29:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:01,131 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 266 transitions. [2021-11-12 22:29:01,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:01,132 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 266 transitions. [2021-11-12 22:29:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-12 22:29:01,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:01,135 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:01,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:01,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:01,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:29:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash -560305425, now seen corresponding path program 1 times [2021-11-12 22:29:01,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:01,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501523944] [2021-11-12 22:29:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:01,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:01,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:01,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:29:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:29:06,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:06,518 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 [2021-11-12 22:29:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 22:29:07,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:09,459 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 [2021-11-12 22:29:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-12 22:29:09,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:09,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501523944] [2021-11-12 22:29:09,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501523944] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:09,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:29:09,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2021-11-12 22:29:09,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860273501] [2021-11-12 22:29:09,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:09,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:29:09,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:29:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:29:09,815 INFO L87 Difference]: Start difference. First operand 194 states and 266 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-12 22:29:12,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:14,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:17,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:19,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:19,459 INFO L93 Difference]: Finished difference Result 389 states and 528 transitions. [2021-11-12 22:29:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:29:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 174 [2021-11-12 22:29:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:19,463 INFO L225 Difference]: With dead ends: 389 [2021-11-12 22:29:19,464 INFO L226 Difference]: Without dead ends: 227 [2021-11-12 22:29:19,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:29:19,466 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 29 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9050.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 9245.31ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:19,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 2153 Invalid, 208 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 4 Unknown, 125 Unchecked, 9245.31ms Time] [2021-11-12 22:29:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-12 22:29:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 215. [2021-11-12 22:29:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.2013888888888888) internal successors, (173), 146 states have internal predecessors, (173), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-12 22:29:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 285 transitions. [2021-11-12 22:29:19,492 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 285 transitions. Word has length 174 [2021-11-12 22:29:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:19,494 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 285 transitions. [2021-11-12 22:29:19,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 10 states have internal predecessors, (76), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-12 22:29:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 285 transitions. [2021-11-12 22:29:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:29:19,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:19,501 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:19,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:19,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:29:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash 316577719, now seen corresponding path program 1 times [2021-11-12 22:29:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:19,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737838719] [2021-11-12 22:29:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:19,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:19,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:19,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:29:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:24,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:29:24,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 22:29:27,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2021-11-12 22:29:29,927 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:29,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737838719] [2021-11-12 22:29:29,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737838719] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:29,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:29:29,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:29:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648793855] [2021-11-12 22:29:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:29,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:29:29,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:29,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:29:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:29:29,930 INFO L87 Difference]: Start difference. First operand 215 states and 285 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:32,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:34,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:39,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:41,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:29:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:42,938 INFO L93 Difference]: Finished difference Result 378 states and 515 transitions. [2021-11-12 22:29:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:29:42,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 178 [2021-11-12 22:29:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:42,948 INFO L225 Difference]: With dead ends: 378 [2021-11-12 22:29:42,948 INFO L226 Difference]: Without dead ends: 218 [2021-11-12 22:29:42,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:29:42,951 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 38 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10538.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 10958.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:42,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2083 Invalid, 658 Unknown, 0 Unchecked, 9.16ms Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 4 Unknown, 373 Unchecked, 10958.18ms Time] [2021-11-12 22:29:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-12 22:29:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 208. [2021-11-12 22:29:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 137 states have (on average 1.197080291970803) internal successors, (164), 139 states have internal predecessors, (164), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-12 22:29:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 276 transitions. [2021-11-12 22:29:42,975 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 276 transitions. Word has length 178 [2021-11-12 22:29:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:42,976 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 276 transitions. [2021-11-12 22:29:42,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 276 transitions. [2021-11-12 22:29:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 22:29:42,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:42,981 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:43,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:43,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:43,206 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:29:43,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1836456453, now seen corresponding path program 1 times [2021-11-12 22:29:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197074630] [2021-11-12 22:29:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:43,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:43,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:43,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:29:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:47,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:29:47,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-12 22:29:48,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:29:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-12 22:29:49,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:29:49,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197074630] [2021-11-12 22:29:49,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197074630] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:49,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:29:49,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:29:49,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115219451] [2021-11-12 22:29:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:29:49,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:29:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:29:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:29:49,399 INFO L87 Difference]: Start difference. First operand 208 states and 276 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:50,229 INFO L93 Difference]: Finished difference Result 366 states and 495 transitions. [2021-11-12 22:29:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:29:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 178 [2021-11-12 22:29:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:50,233 INFO L225 Difference]: With dead ends: 366 [2021-11-12 22:29:50,233 INFO L226 Difference]: Without dead ends: 213 [2021-11-12 22:29:50,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:29:50,235 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 12 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 648.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 697.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:50,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1621 Invalid, 182 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 697.92ms Time] [2021-11-12 22:29:50,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-12 22:29:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 208. [2021-11-12 22:29:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 139 states have internal predecessors, (163), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2021-11-12 22:29:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2021-11-12 22:29:50,252 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 178 [2021-11-12 22:29:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:50,252 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2021-11-12 22:29:50,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:29:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2021-11-12 22:29:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-12 22:29:50,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:50,257 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:50,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:50,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:29:50,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:29:50,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332384, now seen corresponding path program 2 times [2021-11-12 22:29:50,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:29:50,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392857431] [2021-11-12 22:29:50,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:29:50,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:29:50,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:29:50,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:29:50,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adbe09c6-613a-4bfd-8aa5-fa9885cf7213/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process