./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs --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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:26:27,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:26:27,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:26:27,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:26:27,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:26:27,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:26:27,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:26:27,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:26:27,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:26:27,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:26:27,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:26:27,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:26:27,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:26:27,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:26:27,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:26:27,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:26:27,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:26:27,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:26:27,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:26:27,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:26:27,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:26:27,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:26:27,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:26:27,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:26:27,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:26:27,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:26:27,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:26:27,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:26:27,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:26:27,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:26:27,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:26:27,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:26:27,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:26:27,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:26:27,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:26:27,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:26:27,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:26:27,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:26:27,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:26:27,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:26:27,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:26:27,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:26:27,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:26:27,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:26:27,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:26:27,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:26:27,516 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:26:27,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:26:27,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:26:27,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:26:27,517 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:26:27,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:26:27,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:26:27,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:26:27,518 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:26:27,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:26:27,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:26:27,519 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:26:27,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:26:27,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:26:27,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:26:27,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:26:27,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:26:27,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:26:27,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:26:27,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:26:27,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:26:27,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:26:27,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:26:27,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:26:27,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:27,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:26:27,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:26:27,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:26:27,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:26:27,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:26:27,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:26:27,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:26:27,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:26:27,539 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2021-11-19 13:26:27,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:26:27,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:26:27,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:26:27,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:26:27,916 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:26:27,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-19 13:26:28,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/95829d100/2f86a35395464568a910f93b4278e6fa/FLAGebc694dbc [2021-11-19 13:26:29,118 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:26:29,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-19 13:26:29,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/95829d100/2f86a35395464568a910f93b4278e6fa/FLAGebc694dbc [2021-11-19 13:26:29,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/95829d100/2f86a35395464568a910f93b4278e6fa [2021-11-19 13:26:29,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:26:29,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:26:29,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:29,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:26:29,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:26:29,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:29" (1/1) ... [2021-11-19 13:26:29,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540a709f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:29, skipping insertion in model container [2021-11-19 13:26:29,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:29" (1/1) ... [2021-11-19 13:26:29,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:26:29,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:30,019 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-19 13:26:30,029 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-19 13:26:30,063 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:26:30,071 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:26:31,449 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,450 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,450 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,453 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,474 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,475 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,478 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:31,479 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:32,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:26:32,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:26:32,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:26:32,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:26:32,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:26:32,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:26:32,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:26:32,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:26:32,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:26:32,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:26:32,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:26:32,475 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:32,476 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:32,606 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:32,701 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) [2021-11-19 13:26:32,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69f7e71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:32, skipping insertion in model container [2021-11-19 13:26:32,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:32,705 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:26:32,708 INFO L158 Benchmark]: Toolchain (without parser) took 3216.96ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.8MB in the beginning and 72.1MB in the end (delta: -7.4MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-19 13:26:32,709 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:26:32,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3213.28ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.6MB in the beginning and 72.1MB in the end (delta: -7.5MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-19 13:26:32,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3213.28ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.6MB in the beginning and 72.1MB in the end (delta: -7.5MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs --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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:26:35,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:26:35,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:26:35,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:26:35,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:26:35,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:26:35,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:26:35,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:26:35,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:26:35,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:26:35,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:26:35,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:26:35,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:26:35,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:26:35,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:26:35,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:26:35,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:26:35,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:26:35,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:26:35,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:26:35,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:26:35,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:26:35,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:26:35,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:26:35,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:26:35,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:26:35,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:26:35,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:26:35,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:26:35,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:26:35,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:26:35,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:26:35,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:26:35,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:26:35,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:26:35,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:26:35,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:26:35,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:26:35,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:26:35,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:26:35,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:26:35,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:26:35,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:26:35,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:26:35,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:26:35,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:26:35,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:26:35,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:26:35,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:26:35,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:26:35,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:26:35,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:26:35,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:26:35,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:26:35,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:26:35,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:26:35,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:26:35,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:26:35,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:26:35,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:26:35,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:26:35,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:26:35,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:26:35,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:26:35,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:26:35,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:26:35,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:35,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:26:35,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:26:35,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:26:35,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:26:35,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:26:35,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:26:35,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:26:35,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:26:35,633 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2021-11-19 13:26:36,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:26:36,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:26:36,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:26:36,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:26:36,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:26:36,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-19 13:26:36,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/162bad26b/11ad29e1edea4e2daef312f9e85c057c/FLAG43d3235e2 [2021-11-19 13:26:37,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:26:37,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-19 13:26:37,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/162bad26b/11ad29e1edea4e2daef312f9e85c057c/FLAG43d3235e2 [2021-11-19 13:26:37,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/data/162bad26b/11ad29e1edea4e2daef312f9e85c057c [2021-11-19 13:26:37,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:26:37,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:26:37,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:37,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:26:37,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:26:37,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:37" (1/1) ... [2021-11-19 13:26:37,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705382d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:37, skipping insertion in model container [2021-11-19 13:26:37,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:26:37" (1/1) ... [2021-11-19 13:26:37,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:26:37,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:38,308 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-19 13:26:38,325 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-19 13:26:38,366 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:26:38,380 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:26:39,710 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,711 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,712 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,713 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,715 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,741 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:39,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:40,323 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:26:40,325 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:26:40,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:26:40,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:26:40,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:26:40,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:26:40,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:26:40,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:26:40,333 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:26:40,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:26:40,569 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:26:40,730 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:40,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:40,849 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:40,992 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:26:41,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:26:41,076 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-19 13:26:41,077 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-19 13:26:41,096 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:26:41,099 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:26:41,180 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,189 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,190 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,215 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,217 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,219 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,300 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:26:41,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:26:41,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:26:41,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:26:41,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:26:41,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:26:41,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:26:41,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:26:41,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:26:41,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:26:41,347 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:26:41,471 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,472 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,548 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:41,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:26:41,665 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-19 13:26:41,672 WARN L230 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_e8b3622d-3d4f-43e8-8da2-4315065632e8/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-19 13:26:41,674 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:26:41,675 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:26:41,728 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,732 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,732 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,744 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,745 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,746 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,747 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:41,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:26:41,840 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:26:41,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:26:41,842 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:26:41,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:26:41,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:26:41,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:26:41,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:26:41,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:26:41,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:26:41,904 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:26:42,086 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:42,087 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:26:42,198 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:26:42,737 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:26:42,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42 WrapperNode [2021-11-19 13:26:42,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:26:42,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:26:42,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:26:42,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:26:42,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:42,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,062 INFO L137 Inliner]: procedures = 712, calls = 2742, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 826 [2021-11-19 13:26:43,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:26:43,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:26:43,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:26:43,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:26:43,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:26:43,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:26:43,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:26:43,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:26:43,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (1/1) ... [2021-11-19 13:26:43,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:26:43,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:26:43,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:26:43,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:26:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 13:26:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 13:26:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:26:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:26:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:26:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:26:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:26:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 13:26:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 13:26:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-19 13:26:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:26:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:26:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:26:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:26:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:26:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:26:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:26:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:26:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:26:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:26:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:26:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:26:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:26:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:26:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:26:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:26:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:26:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:26:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:26:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:26:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:26:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 13:26:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 13:26:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 13:26:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:26:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:26:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-19 13:26:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-19 13:26:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:26:43,358 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 13:26:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 13:26:43,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:26:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:26:43,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:26:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:26:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-11-19 13:26:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-11-19 13:26:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:26:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:26:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-19 13:26:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 13:26:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 13:26:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-19 13:26:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-19 13:26:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:26:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:26:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:26:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:26:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:26:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:26:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2021-11-19 13:26:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2021-11-19 13:26:43,779 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:26:43,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:26:44,320 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-11-19 13:26:50,395 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:26:50,410 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:26:50,410 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:26:50,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:50 BoogieIcfgContainer [2021-11-19 13:26:50,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:26:50,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:26:50,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:26:50,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:26:50,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:26:37" (1/3) ... [2021-11-19 13:26:50,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dacc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:50, skipping insertion in model container [2021-11-19 13:26:50,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:26:42" (2/3) ... [2021-11-19 13:26:50,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dacc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:26:50, skipping insertion in model container [2021-11-19 13:26:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:26:50" (3/3) ... [2021-11-19 13:26:50,426 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2021-11-19 13:26:50,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:26:50,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:26:50,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:26:50,531 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 [2021-11-19 13:26:50,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:26:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-19 13:26:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:26:50,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:50,577 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:50,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1169510977, now seen corresponding path program 1 times [2021-11-19 13:26:50,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:50,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329412933] [2021-11-19 13:26:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:50,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:50,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:50,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:50,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:26:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:51,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:26:51,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:26:52,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:26:52,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:52,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329412933] [2021-11-19 13:26:52,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329412933] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:26:52,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:26:52,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:26:52,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169456672] [2021-11-19 13:26:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:52,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:26:52,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:52,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:26:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:26:52,437 INFO L87 Difference]: Start difference. First operand has 152 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 96 states have internal predecessors, (113), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:26:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:26:52,502 INFO L93 Difference]: Finished difference Result 298 states and 396 transitions. [2021-11-19 13:26:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:26:52,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2021-11-19 13:26:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:26:52,517 INFO L225 Difference]: With dead ends: 298 [2021-11-19 13:26:52,517 INFO L226 Difference]: Without dead ends: 146 [2021-11-19 13:26:52,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:26:52,527 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:26:52,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:26:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-19 13:26:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-19 13:26:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 91 states have internal predecessors, (105), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-19 13:26:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 182 transitions. [2021-11-19 13:26:52,594 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 182 transitions. Word has length 79 [2021-11-19 13:26:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:26:52,596 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 182 transitions. [2021-11-19 13:26:52,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:26:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 182 transitions. [2021-11-19 13:26:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:26:52,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:26:52,602 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:26:52,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:26:52,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:26:52,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:26:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:26:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1619453953, now seen corresponding path program 1 times [2021-11-19 13:26:52,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:26:52,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44007674] [2021-11-19 13:26:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:26:52,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:26:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:26:52,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:26:52,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:26:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:26:53,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 13:26:53,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:26:54,052 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 32 treesize of output 24 [2021-11-19 13:26:54,058 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 21 treesize of output 13 [2021-11-19 13:26:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:26:54,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:26:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:26:55,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:26:55,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44007674] [2021-11-19 13:26:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44007674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:26:55,025 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:26:55,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-19 13:26:55,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741366982] [2021-11-19 13:26:55,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:26:55,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:26:55,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:26:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:26:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:26:55,029 INFO L87 Difference]: Start difference. First operand 146 states and 182 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:26:57,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:00,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:00,587 INFO L93 Difference]: Finished difference Result 218 states and 280 transitions. [2021-11-19 13:27:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:27:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 79 [2021-11-19 13:27:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:00,596 INFO L225 Difference]: With dead ends: 218 [2021-11-19 13:27:00,596 INFO L226 Difference]: Without dead ends: 176 [2021-11-19 13:27:00,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:27:00,599 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 20 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:00,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 1512 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-11-19 13:27:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-19 13:27:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 154. [2021-11-19 13:27:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 97 states have internal predecessors, (109), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-11-19 13:27:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 193 transitions. [2021-11-19 13:27:00,631 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 193 transitions. Word has length 79 [2021-11-19 13:27:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 193 transitions. [2021-11-19 13:27:00,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-19 13:27:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 193 transitions. [2021-11-19 13:27:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 13:27:00,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:00,637 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:27:00,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:00,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:00,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:27:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash -430179187, now seen corresponding path program 1 times [2021-11-19 13:27:00,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:00,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310617458] [2021-11-19 13:27:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:00,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:00,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:00,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:27:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:27:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 13:27:02,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:27:03,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:03,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310617458] [2021-11-19 13:27:03,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310617458] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:27:03,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:27:03,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 13:27:03,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638069077] [2021-11-19 13:27:03,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:03,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:27:03,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:03,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:27:03,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:27:03,270 INFO L87 Difference]: Start difference. First operand 154 states and 193 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:27:05,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:06,436 INFO L93 Difference]: Finished difference Result 218 states and 279 transitions. [2021-11-19 13:27:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:27:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 84 [2021-11-19 13:27:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:06,441 INFO L225 Difference]: With dead ends: 218 [2021-11-19 13:27:06,442 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 13:27:06,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:27:06,444 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 207 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 1190 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 13:27:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 13:27:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 149. [2021-11-19 13:27:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 91 states have (on average 1.164835164835165) internal successors, (106), 93 states have internal predecessors, (106), 41 states have call successors, (41), 16 states have call predecessors, (41), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-19 13:27:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 186 transitions. [2021-11-19 13:27:06,486 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 186 transitions. Word has length 84 [2021-11-19 13:27:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:06,487 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 186 transitions. [2021-11-19 13:27:06,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:27:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 186 transitions. [2021-11-19 13:27:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 13:27:06,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:06,491 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:27:06,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:06,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:06,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:27:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2143195865, now seen corresponding path program 1 times [2021-11-19 13:27:06,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:06,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497756101] [2021-11-19 13:27:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:06,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:06,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:27:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:07,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:27:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:27:08,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:27:08,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:08,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497756101] [2021-11-19 13:27:08,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497756101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:08,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:08,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:27:08,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115363245] [2021-11-19 13:27:08,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:08,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:27:08,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:27:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:27:08,562 INFO L87 Difference]: Start difference. First operand 149 states and 186 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 13:27:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:08,640 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2021-11-19 13:27:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:27:08,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2021-11-19 13:27:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:08,644 INFO L225 Difference]: With dead ends: 200 [2021-11-19 13:27:08,644 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 13:27:08,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:27:08,646 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:08,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 716 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:27:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 13:27:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-19 13:27:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 96 states have internal predecessors, (109), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-19 13:27:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2021-11-19 13:27:08,669 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 88 [2021-11-19 13:27:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:08,669 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2021-11-19 13:27:08,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 13:27:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2021-11-19 13:27:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 13:27:08,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:08,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:27:08,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:08,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:08,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:27:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -96794005, now seen corresponding path program 1 times [2021-11-19 13:27:08,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:08,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766521275] [2021-11-19 13:27:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:08,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:08,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:08,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:27:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:10,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:27:10,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:27:10,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:27:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:27:11,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:27:11,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766521275] [2021-11-19 13:27:11,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766521275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:27:11,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:27:11,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 13:27:11,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917531110] [2021-11-19 13:27:11,028 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:27:11,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:27:11,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:27:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:27:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:27:11,032 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:27:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:27:11,165 INFO L93 Difference]: Finished difference Result 202 states and 250 transitions. [2021-11-19 13:27:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:27:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2021-11-19 13:27:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:27:11,171 INFO L225 Difference]: With dead ends: 202 [2021-11-19 13:27:11,171 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 13:27:11,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:27:11,173 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:27:11,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1070 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:27:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 13:27:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2021-11-19 13:27:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 101 states have internal predecessors, (114), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-19 13:27:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2021-11-19 13:27:11,191 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 94 [2021-11-19 13:27:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:27:11,191 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2021-11-19 13:27:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-19 13:27:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2021-11-19 13:27:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 13:27:11,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:11,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1] [2021-11-19 13:27:11,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:27:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:27:11,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:27:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash -299567670, now seen corresponding path program 1 times [2021-11-19 13:27:11,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:27:11,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577614420] [2021-11-19 13:27:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:11,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:27:11,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:27:11,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:27:11,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3622d-3d4f-43e8-8da2-4315065632e8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:27:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:27:12,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-19 13:27:12,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:27:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 13:27:22,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:50,489 WARN L227 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 662 DAG size of output: 414 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:28:50,500 INFO L354 Elim1Store]: treesize reduction 856, result has 57.5 percent of original size [2021-11-19 13:28:50,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 153 case distinctions, treesize of input 296 treesize of output 1355 [2021-11-19 13:30:34,278 WARN L227 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 662 DAG size of output: 412 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:30:34,300 INFO L354 Elim1Store]: treesize reduction 860, result has 57.3 percent of original size [2021-11-19 13:30:34,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 153 case distinctions, treesize of input 148 treesize of output 1203