./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P --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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:20:57,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:20:57,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:20:57,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:20:57,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:20:57,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:20:57,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:20:57,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:20:57,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:20:57,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:20:57,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:20:57,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:20:57,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:20:57,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:20:57,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:20:57,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:20:57,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:20:57,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:20:57,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:20:57,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:20:57,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:20:57,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:20:57,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:20:57,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:20:57,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:20:57,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:20:57,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:20:57,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:20:57,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:20:57,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:20:57,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:20:57,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:20:57,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:20:57,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:20:57,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:20:57,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:20:57,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:20:57,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:20:57,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:20:57,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:20:57,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:20:57,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:20:57,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:20:57,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:20:57,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:20:57,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:20:57,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:20:57,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:20:57,698 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:20:57,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:20:57,699 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:20:57,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:20:57,700 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:20:57,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:20:57,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:20:57,701 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:20:57,701 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:20:57,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:20:57,702 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:20:57,702 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:20:57,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:20:57,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:20:57,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:20:57,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:20:57,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:20:57,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:20:57,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:20:57,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:20:57,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:20:57,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:20:57,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:20:57,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:20:57,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:20:57,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:20:57,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:20:57,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:20:57,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:20:57,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:20:57,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:20:57,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:20:57,710 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_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-21 01:20:58,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:20:58,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:20:58,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:20:58,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:20:58,036 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:20:58,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-21 01:20:58,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/data/e3367344b/58cb10946011448ba3d56ba962f4b1be/FLAG12cbe8953 [2021-11-21 01:20:59,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:20:59,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-21 01:20:59,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/data/e3367344b/58cb10946011448ba3d56ba962f4b1be/FLAG12cbe8953 [2021-11-21 01:20:59,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/data/e3367344b/58cb10946011448ba3d56ba962f4b1be [2021-11-21 01:20:59,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:20:59,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:20:59,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:20:59,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:20:59,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:20:59,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:20:59" (1/1) ... [2021-11-21 01:20:59,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc97b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:20:59, skipping insertion in model container [2021-11-21 01:20:59,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:20:59" (1/1) ... [2021-11-21 01:20:59,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:20:59,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:21:00,061 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_158a4aed-2ddb-4664-96b4-279e9572ce87/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-21 01:21:00,069 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_158a4aed-2ddb-4664-96b4-279e9572ce87/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-21 01:21:01,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:21:01,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:21:01,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:21:01,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:21:01,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:21:01,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:21:01,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:21:01,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:21:01,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:21:01,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:21:01,766 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:21:01,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:01,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:02,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:21:02,017 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_158a4aed-2ddb-4664-96b4-279e9572ce87/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-21 01:21:02,017 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_158a4aed-2ddb-4664-96b4-279e9572ce87/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-21 01:21:02,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,103 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:21:02,104 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:21:02,105 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:21:02,106 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:21:02,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:21:02,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:21:02,109 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:21:02,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:21:02,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:21:02,113 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:21:02,150 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:21:02,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:21:02,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:21:02,595 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:21:02,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02 WrapperNode [2021-11-21 01:21:02,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:21:02,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:02,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:21:02,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:21:02,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,856 INFO L137 Inliner]: procedures = 690, calls = 2639, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 868 [2021-11-21 01:21:02,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:21:02,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:21:02,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:21:02,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:21:02,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:02,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:21:02,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:21:02,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:21:02,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:21:02,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (1/1) ... [2021-11-21 01:21:03,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:21:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:03,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:21:03,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:21:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-21 01:21:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-21 01:21:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-21 01:21:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-21 01:21:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:21:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:21:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:21:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:21:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:21:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:21:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2021-11-21 01:21:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2021-11-21 01:21:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:21:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:21:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:21:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:21:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:21:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:21:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:21:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 01:21:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 01:21:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:21:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:21:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:21:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:21:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:21:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:21:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:21:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 01:21:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 01:21:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:21:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:21:03,383 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:21:03,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:21:05,026 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:21:05,239 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:21:05,239 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:21:05,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:05 BoogieIcfgContainer [2021-11-21 01:21:05,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:21:05,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:21:05,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:21:05,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:21:05,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:20:59" (1/3) ... [2021-11-21 01:21:05,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57c710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:05, skipping insertion in model container [2021-11-21 01:21:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:21:02" (2/3) ... [2021-11-21 01:21:05,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c57c710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:21:05, skipping insertion in model container [2021-11-21 01:21:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:21:05" (3/3) ... [2021-11-21 01:21:05,250 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2021-11-21 01:21:05,255 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:21:05,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:21:05,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:21:05,311 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 [2021-11-21 01:21:05,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:21:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-21 01:21:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-21 01:21:05,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:05,342 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-21 01:21:05,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:21:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2075530696, now seen corresponding path program 1 times [2021-11-21 01:21:05,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:05,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638037706] [2021-11-21 01:21:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:05,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-21 01:21:06,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638037706] [2021-11-21 01:21:06,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638037706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:06,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:06,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 01:21:06,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170839789] [2021-11-21 01:21:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:07,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:21:07,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:21:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:21:07,041 INFO L87 Difference]: Start difference. First operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-21 01:21:08,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:08,466 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2021-11-21 01:21:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 01:21:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2021-11-21 01:21:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:08,480 INFO L225 Difference]: With dead ends: 191 [2021-11-21 01:21:08,480 INFO L226 Difference]: Without dead ends: 128 [2021-11-21 01:21:08,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:21:08,489 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:08,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 961 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:21:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-21 01:21:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 98. [2021-11-21 01:21:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-21 01:21:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2021-11-21 01:21:08,554 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 43 [2021-11-21 01:21:08,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:08,555 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-11-21 01:21:08,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-21 01:21:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2021-11-21 01:21:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-21 01:21:08,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:08,559 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-21 01:21:08,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:21:08,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:21:08,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:08,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1091548635, now seen corresponding path program 1 times [2021-11-21 01:21:08,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:08,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932148681] [2021-11-21 01:21:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:08,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:21:10,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:10,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932148681] [2021-11-21 01:21:10,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932148681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:21:10,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:21:10,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-21 01:21:10,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267269593] [2021-11-21 01:21:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:21:10,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 01:21:10,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:21:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 01:21:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:21:10,762 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-21 01:21:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:21:13,186 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-11-21 01:21:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 01:21:13,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 47 [2021-11-21 01:21:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:21:13,189 INFO L225 Difference]: With dead ends: 134 [2021-11-21 01:21:13,189 INFO L226 Difference]: Without dead ends: 132 [2021-11-21 01:21:13,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-11-21 01:21:13,192 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 68 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:21:13,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 977 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:21:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-21 01:21:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2021-11-21 01:21:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-21 01:21:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2021-11-21 01:21:13,225 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 47 [2021-11-21 01:21:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:21:13,225 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2021-11-21 01:21:13,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-21 01:21:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2021-11-21 01:21:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 01:21:13,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:21:13,228 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-21 01:21:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:21:13,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:21:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:21:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1403934463, now seen corresponding path program 1 times [2021-11-21 01:21:13,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:21:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464361032] [2021-11-21 01:21:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:13,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:21:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-21 01:21:15,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:21:15,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464361032] [2021-11-21 01:21:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464361032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:21:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460294555] [2021-11-21 01:21:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:21:15,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:21:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:21:15,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:21:15,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158a4aed-2ddb-4664-96b4-279e9572ce87/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:21:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:21:16,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-21 01:21:16,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:21:16,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-21 01:21:16,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-11-21 01:21:17,320 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:21:17,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:21:17,454 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 27 treesize of output 23 [2021-11-21 01:21:17,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:17,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-21 01:21:18,352 INFO L354 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2021-11-21 01:21:18,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 77 [2021-11-21 01:21:19,092 INFO L354 Elim1Store]: treesize reduction 142, result has 25.7 percent of original size [2021-11-21 01:21:19,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 73 treesize of output 104 [2021-11-21 01:21:19,496 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 118 treesize of output 94 [2021-11-21 01:21:19,512 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-21 01:21:19,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 84 [2021-11-21 01:21:19,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:21:19,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2021-11-21 01:21:23,182 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 9 treesize of output 3 [2021-11-21 01:21:23,193 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 138 treesize of output 120 [2021-11-21 01:21:25,499 INFO L354 Elim1Store]: treesize reduction 193, result has 32.8 percent of original size [2021-11-21 01:21:25,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 192 [2021-11-21 01:21:25,510 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 202 treesize of output 196 [2021-11-21 01:21:25,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 196 treesize of output 194 [2021-11-21 01:21:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:28,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:28,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2021-11-21 01:21:28,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:28,529 INFO L354 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2021-11-21 01:21:28,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 41 [2021-11-21 01:21:28,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-21 01:21:28,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-21 01:21:29,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:29,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:29,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2021-11-21 01:21:38,232 INFO L354 Elim1Store]: treesize reduction 193, result has 32.8 percent of original size [2021-11-21 01:21:38,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 251 [2021-11-21 01:21:38,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 261 treesize of output 259 [2021-11-21 01:21:38,259 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 256 treesize of output 250 [2021-11-21 01:21:39,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:39,535 INFO L354 Elim1Store]: treesize reduction 12, result has 77.4 percent of original size [2021-11-21 01:21:39,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 109 [2021-11-21 01:21:39,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:39,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:39,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 62 [2021-11-21 01:21:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:39,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:39,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2021-11-21 01:21:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:52,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:21:52,782 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:21:52,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 195 [2021-11-21 01:21:52,842 INFO L354 Elim1Store]: treesize reduction 124, result has 17.9 percent of original size [2021-11-21 01:21:52,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 202 treesize of output 210 [2021-11-21 01:21:52,856 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 123 treesize of output 105 [2021-11-21 01:21:56,309 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 225 treesize of output 209 [2021-11-21 01:21:56,392 INFO L354 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2021-11-21 01:21:56,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 185 [2021-11-21 01:21:56,444 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 247 treesize of output 231 [2021-11-21 01:21:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:21:57,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:22:00,758 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-21 01:30:05,416 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.