./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_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_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/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_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/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_a296210b-c2a9-47d4-8f6d-3727595c2692/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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:36:39,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:36:39,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:36:39,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:36:39,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:36:39,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:36:39,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:36:39,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:36:39,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:36:39,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:36:39,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:36:39,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:36:39,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:36:39,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:36:39,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:36:39,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:36:39,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:36:39,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:36:39,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:36:39,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:36:39,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:36:39,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:36:39,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:36:39,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:36:39,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:36:39,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:36:39,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:36:39,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:36:39,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:36:39,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:36:39,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:36:39,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:36:39,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:36:39,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:36:39,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:36:39,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:36:39,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:36:39,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:36:39,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:36:39,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:36:39,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:36:39,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:36:39,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:36:39,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:36:39,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:36:39,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:36:39,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:36:39,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:36:39,721 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:36:39,721 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:36:39,722 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:36:39,722 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:36:39,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:36:39,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:36:39,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:36:39,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:36:39,724 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:36:39,724 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:36:39,724 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:36:39,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:36:39,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:36:39,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:36:39,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:36:39,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:36:39,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:36:39,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:36:39,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:36:39,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:36:39,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:36:39,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:36:39,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:36:39,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:36:39,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:36:39,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:36:39,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:36:39,730 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:36:39,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:36:39,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:36:39,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:36:39,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:36:39,731 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_a296210b-c2a9-47d4-8f6d-3727595c2692/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2021-11-21 00:36:40,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:36:40,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:36:40,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:36:40,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:36:40,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:36:40,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-21 00:36:40,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/data/a2601806f/4b0836ae7a8e4e6390078d069292d1d9/FLAG1e7e41336 [2021-11-21 00:36:41,098 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:36:41,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-21 00:36:41,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/data/a2601806f/4b0836ae7a8e4e6390078d069292d1d9/FLAG1e7e41336 [2021-11-21 00:36:41,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/data/a2601806f/4b0836ae7a8e4e6390078d069292d1d9 [2021-11-21 00:36:41,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:36:41,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:36:41,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:36:41,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:36:41,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:36:41,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:36:41" (1/1) ... [2021-11-21 00:36:41,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503c8cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:41, skipping insertion in model container [2021-11-21 00:36:41,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:36:41" (1/1) ... [2021-11-21 00:36:41,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:36:41,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:36:42,089 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_a296210b-c2a9-47d4-8f6d-3727595c2692/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-21 00:36:42,097 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_a296210b-c2a9-47d4-8f6d-3727595c2692/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-21 00:36:43,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:43,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:36:43,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:36:43,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:36:43,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:36:43,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:36:43,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:36:43,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:36:43,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:36:43,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:36:43,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:36:44,000 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:36:44,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,370 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,376 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,376 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,391 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:36:44,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:36:44,471 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_a296210b-c2a9-47d4-8f6d-3727595c2692/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-21 00:36:44,472 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_a296210b-c2a9-47d4-8f6d-3727595c2692/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-21 00:36:44,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,507 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,507 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,508 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,508 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,603 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:36:44,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:36:44,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:36:44,607 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:36:44,608 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:36:44,608 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:36:44,609 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:36:44,609 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:36:44,610 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:36:44,610 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:36:44,638 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:36:44,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,791 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,795 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,795 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:36:44,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:36:45,124 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:36:45,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45 WrapperNode [2021-11-21 00:36:45,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:36:45,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:36:45,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:36:45,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:36:45,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,359 INFO L137 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 642 [2021-11-21 00:36:45,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:36:45,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:36:45,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:36:45,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:36:45,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:36:45,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:36:45,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:36:45,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:36:45,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (1/1) ... [2021-11-21 00:36:45,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:36:45,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:36:45,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:36:45,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:36:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 00:36:45,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:36:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2021-11-21 00:36:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2021-11-21 00:36:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:36:45,574 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:36:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:36:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:36:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-21 00:36:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-21 00:36:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:36:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:36:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:36:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:36:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:36:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:36:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:36:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 00:36:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 00:36:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:36:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-21 00:36:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-21 00:36:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:36:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 00:36:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 00:36:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:36:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-21 00:36:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-21 00:36:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:36:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-21 00:36:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-21 00:36:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:36:45,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:36:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-21 00:36:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-21 00:36:45,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-21 00:36:45,583 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-21 00:36:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:36:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 00:36:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 00:36:45,584 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-21 00:36:45,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-21 00:36:45,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:36:45,991 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:36:46,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:36:47,167 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:36:47,396 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:36:47,396 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:36:47,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:36:47 BoogieIcfgContainer [2021-11-21 00:36:47,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:36:47,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:36:47,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:36:47,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:36:47,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:36:41" (1/3) ... [2021-11-21 00:36:47,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:36:47, skipping insertion in model container [2021-11-21 00:36:47,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:36:45" (2/3) ... [2021-11-21 00:36:47,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:36:47, skipping insertion in model container [2021-11-21 00:36:47,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:36:47" (3/3) ... [2021-11-21 00:36:47,408 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2021-11-21 00:36:47,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:36:47,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:36:47,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:36:47,494 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 00:36:47,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:36:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 64 states have (on average 1.15625) internal successors, (74), 65 states have internal predecessors, (74), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-21 00:36:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-21 00:36:47,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:47,534 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:47,535 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:36:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash -179082797, now seen corresponding path program 1 times [2021-11-21 00:36:47,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:47,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809314625] [2021-11-21 00:36:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:47,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:47,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:36:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590202241] [2021-11-21 00:36:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:47,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:36:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:36:47,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:36:47,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a296210b-c2a9-47d4-8f6d-3727595c2692/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:36:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:36:48,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 00:36:49,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:36:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-21 00:36:49,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809314625] [2021-11-21 00:36:49,355 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:36:49,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590202241] [2021-11-21 00:36:49,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590202241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:36:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [716101773] [2021-11-21 00:36:49,402 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-21 00:36:49,402 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:36:49,407 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:36:49,415 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:36:49,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:36:55,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:36:55,456 INFO L244 Elim1Store]: Index analysis took 449 ms [2021-11-21 00:37:28,454 WARN L227 SmtUtils]: Spent 32.90s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:37:28,462 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-21 00:37:28,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-21 00:37:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:37:59,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19503 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582