./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:01,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:01,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:01,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:01,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:01,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:01,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:01,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:01,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:01,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:01,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:01,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:01,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:01,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:01,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:01,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:01,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:01,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:01,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:01,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:01,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:01,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:01,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:01,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:01,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:01,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:01,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:01,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:01,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:01,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:01,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:01,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:01,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:01,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:01,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:01,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:01,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:01,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:01,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:01,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:01,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:01,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:14:01,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:01,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:01,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:01,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:01,579 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:01,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:01,580 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:01,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:14:01,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:01,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:01,582 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:14:01,583 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:14:01,583 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:01,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:14:01,584 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:14:01,584 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:14:01,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:01,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:14:01,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:01,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:01,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:01,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:01,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:01,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:01,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:01,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:01,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:01,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:01,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:01,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:01,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:01,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:01,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:14:01,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:14:01,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:01,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:01,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:01,592 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-19 14:14:01,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:02,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:02,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:02,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:02,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:02,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-19 14:14:02,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/c9f6f8205/72409c0c33b54914b48201a2007f32fc/FLAGa62000b40 [2021-11-19 14:14:03,256 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:03,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-19 14:14:03,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/c9f6f8205/72409c0c33b54914b48201a2007f32fc/FLAGa62000b40 [2021-11-19 14:14:03,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/c9f6f8205/72409c0c33b54914b48201a2007f32fc [2021-11-19 14:14:03,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:03,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:03,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:03,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:03,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:03,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:03" (1/1) ... [2021-11-19 14:14:03,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687c5e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:03, skipping insertion in model container [2021-11-19 14:14:03,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:03" (1/1) ... [2021-11-19 14:14:03,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:03,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:04,182 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-19 14:14:04,190 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-19 14:14:04,222 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:04,229 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:05,625 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,627 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,629 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,630 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,633 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,673 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,674 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,680 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:05,681 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:06,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:06,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:06,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:06,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:06,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:06,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:06,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:06,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:06,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:06,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:06,560 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:06,682 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:06,682 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:06,757 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:06,826 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 14:14:06,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4024a43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:06, skipping insertion in model container [2021-11-19 14:14:06,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:06,828 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:14:06,830 INFO L158 Benchmark]: Toolchain (without parser) took 3210.93ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 49.9MB in the end (delta: 25.0MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2021-11-19 14:14:06,831 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:14:06,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3203.89ms. Allocated memory is still 100.7MB. Free memory was 74.4MB in the beginning and 49.9MB in the end (delta: 24.6MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2021-11-19 14:14:06,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3203.89ms. Allocated memory is still 100.7MB. Free memory was 74.4MB in the beginning and 49.9MB in the end (delta: 24.6MB). Peak memory consumption was 37.6MB. 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:14:09,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:14:09,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:14:09,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:14:09,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:14:09,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:14:09,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:14:09,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:14:09,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:14:09,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:14:09,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:14:09,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:14:09,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:14:09,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:14:09,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:14:09,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:14:09,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:14:09,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:14:09,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:14:09,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:14:09,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:14:09,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:14:09,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:14:09,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:14:09,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:14:09,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:14:09,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:14:09,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:14:09,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:14:09,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:14:09,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:14:09,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:14:09,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:14:09,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:14:09,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:14:09,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:14:09,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:14:09,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:14:09,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:14:09,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:14:09,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:14:09,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:14:09,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:14:09,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:14:09,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:14:09,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:14:09,824 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:14:09,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:14:09,825 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:14:09,825 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:14:09,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:14:09,826 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:14:09,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:14:09,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:14:09,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:14:09,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:14:09,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:14:09,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:14:09,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:14:09,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:14:09,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:14:09,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:14:09,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:14:09,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:14:09,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:14:09,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:14:09,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:09,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:14:09,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:14:09,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:14:09,833 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:14:09,834 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:14:09,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:14:09,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:14:09,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:14:09,835 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-19 14:14:10,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:14:10,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:14:10,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:14:10,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:14:10,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:14:10,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-19 14:14:10,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/e098cb99b/4fbda38946474c7db8fb8f8cb73bd2f1/FLAG3ff6d9dee [2021-11-19 14:14:11,708 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:14:11,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-19 14:14:11,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/e098cb99b/4fbda38946474c7db8fb8f8cb73bd2f1/FLAG3ff6d9dee [2021-11-19 14:14:11,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/data/e098cb99b/4fbda38946474c7db8fb8f8cb73bd2f1 [2021-11-19 14:14:11,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:14:11,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:14:11,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:11,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:14:11,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:14:11,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:11" (1/1) ... [2021-11-19 14:14:11,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17bd6f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:11, skipping insertion in model container [2021-11-19 14:14:11,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:11" (1/1) ... [2021-11-19 14:14:11,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:14:12,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:12,548 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-19 14:14:12,562 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-19 14:14:12,604 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:12,614 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:13,936 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,937 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,939 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,957 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,958 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,961 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:13,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:14,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:14,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:14,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:14,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:14,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:14,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:14,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:14,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:14,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:14,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:14,736 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:14,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:14,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,027 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:15,147 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:14:15,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:14:15,207 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-19 14:14:15,208 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-19 14:14:15,210 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:15,211 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:15,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,264 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,274 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,275 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,277 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,278 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:15,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:15,349 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:15,350 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:15,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:15,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:15,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:15,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:15,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:15,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:15,385 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:15,517 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,517 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,575 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:15,664 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:14:15,690 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-19 14:14:15,697 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_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-19 14:14:15,699 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:14:15,701 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:14:15,757 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,758 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,761 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,762 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,771 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,771 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:15,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:14:15,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:14:15,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:14:15,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:14:15,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:14:15,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:14:15,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:14:15,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:14:15,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:14:15,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:14:15,880 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:14:16,078 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:16,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:14:16,128 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:14:16,554 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:14:16,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16 WrapperNode [2021-11-19 14:14:16,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:14:16,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:16,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:14:16,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:14:16,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,915 INFO L137 Inliner]: procedures = 712, calls = 2639, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 868 [2021-11-19 14:14:16,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:14:16,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:14:16,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:14:16,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:14:16,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:16,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:17,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:17,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:17,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:17,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:14:17,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:14:17,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:14:17,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:14:17,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (1/1) ... [2021-11-19 14:14:17,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:14:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:14:17,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:14:17,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:14:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:14:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:14:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:14:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:14:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:14:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:14:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:14:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:14:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-19 14:14:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:14:17,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:14:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:14:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:14:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:14:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:14:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:14:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:14:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:14:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:14:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:14:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:14:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:14:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:14:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:14:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:14:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:14:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:14:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:14:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:14:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:14:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:14:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:14:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:14:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:14:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-19 14:14:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-19 14:14:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:14:17,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:14:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:14:17,288 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:14:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:14:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-19 14:14:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-19 14:14:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-19 14:14:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:14:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:14:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:14:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:14:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:14:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:14:17,787 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:14:17,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:14:24,123 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:14:24,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:14:24,133 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:14:24,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:24 BoogieIcfgContainer [2021-11-19 14:14:24,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:14:24,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:14:24,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:14:24,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:14:24,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:14:11" (1/3) ... [2021-11-19 14:14:24,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1561ca9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:24, skipping insertion in model container [2021-11-19 14:14:24,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:16" (2/3) ... [2021-11-19 14:14:24,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1561ca9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:14:24, skipping insertion in model container [2021-11-19 14:14:24,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:24" (3/3) ... [2021-11-19 14:14:24,147 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2021-11-19 14:14:24,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:14:24,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:14:24,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:14:24,227 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 14:14:24,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:14:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 86 states have internal predecessors, (108), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-19 14:14:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:14:24,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:24,266 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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] [2021-11-19 14:14:24,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 259728785, now seen corresponding path program 1 times [2021-11-19 14:14:24,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:24,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142042930] [2021-11-19 14:14:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:24,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:24,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:24,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:24,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:14:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:25,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:14:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:14:26,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 14:14:26,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:26,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142042930] [2021-11-19 14:14:26,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142042930] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:26,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:26,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:14:26,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744997424] [2021-11-19 14:14:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:26,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:26,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:26,722 INFO L87 Difference]: Start difference. First operand has 129 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 86 states have internal predecessors, (108), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:14:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:27,096 INFO L93 Difference]: Finished difference Result 258 states and 370 transitions. [2021-11-19 14:14:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2021-11-19 14:14:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:27,117 INFO L225 Difference]: With dead ends: 258 [2021-11-19 14:14:27,117 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 14:14:27,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:27,129 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 54 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:27,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 407 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:14:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 14:14:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-19 14:14:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 85 states have internal predecessors, (104), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-19 14:14:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2021-11-19 14:14:27,206 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 77 [2021-11-19 14:14:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:27,207 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2021-11-19 14:14:27,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:14:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2021-11-19 14:14:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:14:27,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:27,214 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:14:27,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:27,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:27,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1492783356, now seen corresponding path program 1 times [2021-11-19 14:14:27,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:27,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644565757] [2021-11-19 14:14:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:27,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:27,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:27,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:27,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:14:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:14:28,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:29,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:14:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 14:14:30,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:31,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 14:14:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:14:31,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:31,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644565757] [2021-11-19 14:14:31,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644565757] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:31,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:31,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 14:14:31,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427960429] [2021-11-19 14:14:31,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:31,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:14:31,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:14:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:14:32,001 INFO L87 Difference]: Start difference. First operand 127 states and 170 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:14:32,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:32,349 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-11-19 14:14:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:14:32,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 83 [2021-11-19 14:14:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:32,356 INFO L225 Difference]: With dead ends: 250 [2021-11-19 14:14:32,356 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 14:14:32,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:14:32,361 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 29 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:32,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 752 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2021-11-19 14:14:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 14:14:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-19 14:14:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 97 states have internal predecessors, (119), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (35), 31 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-19 14:14:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 186 transitions. [2021-11-19 14:14:32,388 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 186 transitions. Word has length 83 [2021-11-19 14:14:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:32,388 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 186 transitions. [2021-11-19 14:14:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:14:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 186 transitions. [2021-11-19 14:14:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:14:32,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:32,394 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:14:32,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:32,605 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1139694974, now seen corresponding path program 1 times [2021-11-19 14:14:32,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:32,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472063043] [2021-11-19 14:14:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:32,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:32,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:32,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:14:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:14:33,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:14:33,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:14:34,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:34,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472063043] [2021-11-19 14:14:34,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472063043] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:34,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:34,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:14:34,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639509554] [2021-11-19 14:14:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:34,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:14:34,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:14:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:14:34,225 INFO L87 Difference]: Start difference. First operand 140 states and 186 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:14:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:34,302 INFO L93 Difference]: Finished difference Result 253 states and 347 transitions. [2021-11-19 14:14:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:34,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2021-11-19 14:14:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:34,306 INFO L225 Difference]: With dead ends: 253 [2021-11-19 14:14:34,307 INFO L226 Difference]: Without dead ends: 146 [2021-11-19 14:14:34,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:14:34,309 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 20 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:34,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:14:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-19 14:14:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2021-11-19 14:14:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 91 states have internal predecessors, (113), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-19 14:14:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2021-11-19 14:14:34,332 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 83 [2021-11-19 14:14:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:34,333 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2021-11-19 14:14:34,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:14:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2021-11-19 14:14:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:14:34,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:34,337 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:14:34,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:34,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:34,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash -667675260, now seen corresponding path program 1 times [2021-11-19 14:14:34,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:34,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283485486] [2021-11-19 14:14:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:34,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:34,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:34,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:34,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:14:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:35,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:14:35,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:14:36,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:14:37,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:37,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283485486] [2021-11-19 14:14:37,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283485486] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:37,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:37,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 14:14:37,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238779775] [2021-11-19 14:14:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:37,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:14:37,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:14:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:14:37,412 INFO L87 Difference]: Start difference. First operand 134 states and 179 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:14:39,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:41,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:44,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:46,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:14:47,069 INFO L93 Difference]: Finished difference Result 259 states and 359 transitions. [2021-11-19 14:14:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:14:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-19 14:14:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:14:47,076 INFO L225 Difference]: With dead ends: 259 [2021-11-19 14:14:47,076 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 14:14:47,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:14:47,078 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 42 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:14:47,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 563 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 4 Unknown, 43 Unchecked, 9.4s Time] [2021-11-19 14:14:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 14:14:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2021-11-19 14:14:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 100 states have internal predecessors, (125), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-19 14:14:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 191 transitions. [2021-11-19 14:14:47,099 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 191 transitions. Word has length 87 [2021-11-19 14:14:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:14:47,100 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 191 transitions. [2021-11-19 14:14:47,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:14:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 191 transitions. [2021-11-19 14:14:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:14:47,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:14:47,103 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:14:47,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:14:47,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:14:47,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:14:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:14:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1271486786, now seen corresponding path program 1 times [2021-11-19 14:14:47,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:14:47,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497986376] [2021-11-19 14:14:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:14:47,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:14:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:14:47,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:14:47,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:14:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:14:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:14:48,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:14:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:14:50,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:14:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 14:14:52,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:14:52,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497986376] [2021-11-19 14:14:52,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497986376] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:14:52,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:14:52,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:14:52,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148933035] [2021-11-19 14:14:52,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:14:52,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:14:52,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:14:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:14:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:14:52,671 INFO L87 Difference]: Start difference. First operand 143 states and 191 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:14:54,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:14:56,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:01,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:03,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:15:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:04,225 INFO L93 Difference]: Finished difference Result 267 states and 371 transitions. [2021-11-19 14:15:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:15:04,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-11-19 14:15:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:04,230 INFO L225 Difference]: With dead ends: 267 [2021-11-19 14:15:04,230 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 14:15:04,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:15:04,233 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 38 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:04,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1504 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 4 Unknown, 283 Unchecked, 9.8s Time] [2021-11-19 14:15:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 14:15:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-11-19 14:15:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.233009708737864) internal successors, (127), 105 states have internal predecessors, (127), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-19 14:15:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 197 transitions. [2021-11-19 14:15:04,254 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 197 transitions. Word has length 87 [2021-11-19 14:15:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:04,255 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 197 transitions. [2021-11-19 14:15:04,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:15:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 197 transitions. [2021-11-19 14:15:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:15:04,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:04,258 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:15:04,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:15:04,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:04,482 INFO L85 PathProgramCache]: Analyzing trace with hash -223774586, now seen corresponding path program 1 times [2021-11-19 14:15:04,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:04,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689765029] [2021-11-19 14:15:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:04,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:04,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:04,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:04,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:15:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:05,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:15:05,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:15:05,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:15:05,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:05,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689765029] [2021-11-19 14:15:05,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689765029] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:05,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:05,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:15:05,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311720773] [2021-11-19 14:15:05,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:05,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:15:05,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:15:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:15:05,897 INFO L87 Difference]: Start difference. First operand 148 states and 197 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:15:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:05,964 INFO L93 Difference]: Finished difference Result 271 states and 369 transitions. [2021-11-19 14:15:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:15:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-19 14:15:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:05,969 INFO L225 Difference]: With dead ends: 271 [2021-11-19 14:15:05,970 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 14:15:05,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:05,972 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 34 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:05,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 478 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:15:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 14:15:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2021-11-19 14:15:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 101 states have internal predecessors, (120), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-19 14:15:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 190 transitions. [2021-11-19 14:15:05,988 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 190 transitions. Word has length 87 [2021-11-19 14:15:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:05,989 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 190 transitions. [2021-11-19 14:15:05,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:15:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 190 transitions. [2021-11-19 14:15:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:15:05,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:05,991 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-19 14:15:06,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 14:15:06,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,213 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:06,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2042606600, now seen corresponding path program 1 times [2021-11-19 14:15:06,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:06,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784845393] [2021-11-19 14:15:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:06,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:06,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:15:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:07,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:15:07,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:15:07,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 14:15:07,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:15:07,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784845393] [2021-11-19 14:15:07,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784845393] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:07,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:15:07,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:15:07,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062112641] [2021-11-19 14:15:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:07,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:15:07,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:15:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:15:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:15:07,967 INFO L87 Difference]: Start difference. First operand 144 states and 190 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:15:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:08,383 INFO L93 Difference]: Finished difference Result 270 states and 365 transitions. [2021-11-19 14:15:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:15:08,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-11-19 14:15:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:08,387 INFO L225 Difference]: With dead ends: 270 [2021-11-19 14:15:08,387 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 14:15:08,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:15:08,389 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 12 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:08,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1213 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:15:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 14:15:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2021-11-19 14:15:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 101 states have internal predecessors, (120), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-19 14:15:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 190 transitions. [2021-11-19 14:15:08,406 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 190 transitions. Word has length 87 [2021-11-19 14:15:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:08,407 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 190 transitions. [2021-11-19 14:15:08,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:15:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 190 transitions. [2021-11-19 14:15:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:15:08,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:08,413 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:08,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:08,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:15:08,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:08,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash -509258065, now seen corresponding path program 1 times [2021-11-19 14:15:08,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:08,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454432256] [2021-11-19 14:15:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:08,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:08,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5fb42f-ee86-49ba-acd8-1171ea0a8d7f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:15:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 14:15:09,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:09,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:15:12,012 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 115 treesize of output 107 [2021-11-19 14:15:12,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:12,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 40 [2021-11-19 14:15:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:15:12,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:15,354 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 14:15:15,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 138 treesize of output 46 [2021-11-19 14:15:16,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:16,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:15:26,623 WARN L227 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 411 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:15:26,629 INFO L354 Elim1Store]: treesize reduction 515, result has 58.8 percent of original size [2021-11-19 14:15:26,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 92 case distinctions, treesize of input 127 treesize of output 770