./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_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_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/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_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/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_a5e7bab2-03b3-483b-b85a-b29af54a9861/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 d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:12:55,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:12:55,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:12:55,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:12:55,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:12:55,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:12:55,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:12:55,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:12:55,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:12:55,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:12:55,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:12:55,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:12:55,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:12:55,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:12:55,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:12:55,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:12:55,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:12:55,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:12:55,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:12:55,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:12:55,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:12:55,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:12:55,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:12:55,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:12:55,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:12:55,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:12:55,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:12:55,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:12:55,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:12:55,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:12:55,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:12:55,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:12:55,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:12:55,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:12:55,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:12:55,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:12:55,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:12:55,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:12:55,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:12:55,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:12:55,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:12:55,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:12:55,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:12:55,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:12:55,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:12:55,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:12:55,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:12:55,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:12:55,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:12:55,600 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:12:55,600 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:12:55,600 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:12:55,600 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:12:55,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:12:55,601 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:12:55,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:12:55,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:12:55,602 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:12:55,602 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:12:55,602 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:12:55,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:12:55,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:12:55,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:12:55,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:12:55,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:12:55,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:12:55,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:12:55,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:12:55,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:12:55,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:12:55,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:12:55,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:12:55,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:12:55,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:12:55,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:12:55,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:12:55,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:12:55,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:12:55,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:12:55,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:12:55,607 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_a5e7bab2-03b3-483b-b85a-b29af54a9861/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 [2021-11-21 00:12:55,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:12:55,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:12:55,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:12:55,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:12:55,948 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:12:55,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-21 00:12:56,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/data/a034be389/3b0bf736350041ab8b8e8b2c74be7390/FLAG0b86a0d65 [2021-11-21 00:12:57,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:12:57,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-21 00:12:57,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/data/a034be389/3b0bf736350041ab8b8e8b2c74be7390/FLAG0b86a0d65 [2021-11-21 00:12:57,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/data/a034be389/3b0bf736350041ab8b8e8b2c74be7390 [2021-11-21 00:12:57,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:12:57,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:12:57,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:12:57,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:12:57,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:12:57,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:57" (1/1) ... [2021-11-21 00:12:57,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d83d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:12:57, skipping insertion in model container [2021-11-21 00:12:57,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:12:57" (1/1) ... [2021-11-21 00:12:57,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:12:57,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:12:57,976 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_a5e7bab2-03b3-483b-b85a-b29af54a9861/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-21 00:12:57,983 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_a5e7bab2-03b3-483b-b85a-b29af54a9861/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-21 00:12:58,947 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:12:59,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:12:59,543 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:12:59,545 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:12:59,547 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:12:59,549 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:12:59,550 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:12:59,551 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:12:59,559 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:12:59,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:12:59,568 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:12:59,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:12:59,845 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:12:59,861 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_a5e7bab2-03b3-483b-b85a-b29af54a9861/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-21 00:12:59,862 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_a5e7bab2-03b3-483b-b85a-b29af54a9861/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-21 00:12:59,902 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:12:59,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:12:59,991 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:12:59,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:12:59,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:12:59,994 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:12:59,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:12:59,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:12:59,997 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:13:00,000 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:13:00,001 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:13:00,002 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:13:00,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:13:00,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:13:00,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:13:00,350 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:13:00,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00 WrapperNode [2021-11-21 00:13:00,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:13:00,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:13:00,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:13:00,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:13:00,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,629 INFO L137 Inliner]: procedures = 690, calls = 1687, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 616 [2021-11-21 00:13:00,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:13:00,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:13:00,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:13:00,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:13:00,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:13:00,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:13:00,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:13:00,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:13:00,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (1/1) ... [2021-11-21 00:13:00,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:13:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:00,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:13:00,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:13:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:13:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 00:13:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 00:13:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 00:13:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 00:13:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:13:00,875 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:13:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:13:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:13:00,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:13:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:13:00,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:13:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:13:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:13:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:13:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:13:00,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:13:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:13:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:13:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 00:13:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 00:13:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 00:13:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 00:13:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:13:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:13:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:13:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:13:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:13:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:13:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:13:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 00:13:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 00:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:13:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:13:01,352 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:13:01,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:13:02,767 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:13:02,919 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:13:02,919 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:13:02,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:13:02 BoogieIcfgContainer [2021-11-21 00:13:02,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:13:02,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:13:02,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:13:02,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:13:02,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:12:57" (1/3) ... [2021-11-21 00:13:02,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca02ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:13:02, skipping insertion in model container [2021-11-21 00:13:02,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:00" (2/3) ... [2021-11-21 00:13:02,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca02ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:13:02, skipping insertion in model container [2021-11-21 00:13:02,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:13:02" (3/3) ... [2021-11-21 00:13:02,934 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_capacity_harness.i [2021-11-21 00:13:02,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:13:02,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:13:03,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:13:03,043 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 00:13:03,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:13:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-21 00:13:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-21 00:13:03,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:03,102 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:03,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1826594986, now seen corresponding path program 1 times [2021-11-21 00:13:03,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086956779] [2021-11-21 00:13:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:03,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-21 00:13:03,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086956779] [2021-11-21 00:13:03,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086956779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:13:03,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779920906] [2021-11-21 00:13:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:03,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:03,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:03,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:03,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:13:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:04,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:13:04,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:13:04,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:13:04,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779920906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:04,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:13:04,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 00:13:04,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193871161] [2021-11-21 00:13:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:04,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:13:04,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:13:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:13:04,844 INFO L87 Difference]: Start difference. First operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:13:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:05,695 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2021-11-21 00:13:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:13:05,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 58 [2021-11-21 00:13:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:05,714 INFO L225 Difference]: With dead ends: 169 [2021-11-21 00:13:05,714 INFO L226 Difference]: Without dead ends: 99 [2021-11-21 00:13:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:13:05,727 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 26 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:05,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 355 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:13:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-21 00:13:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-21 00:13:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2021-11-21 00:13:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-11-21 00:13:05,822 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 58 [2021-11-21 00:13:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:05,823 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-11-21 00:13:05,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-21 00:13:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-11-21 00:13:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:13:05,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:05,833 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:13:05,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:13:06,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 00:13:06,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:06,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1965393254, now seen corresponding path program 1 times [2021-11-21 00:13:06,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:06,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763816963] [2021-11-21 00:13:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:06,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:06,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:13:06,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265938194] [2021-11-21 00:13:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:06,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:06,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:06,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:06,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:13:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:13:06,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:13:06,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:13:06,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763816963] [2021-11-21 00:13:06,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:13:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265938194] [2021-11-21 00:13:06,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265938194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:06,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:13:06,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:13:06,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161616449] [2021-11-21 00:13:06,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:06,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:13:06,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:13:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:13:06,907 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-21 00:13:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:07,982 INFO L93 Difference]: Finished difference Result 156 states and 196 transitions. [2021-11-21 00:13:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:13:07,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 67 [2021-11-21 00:13:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:07,986 INFO L225 Difference]: With dead ends: 156 [2021-11-21 00:13:07,986 INFO L226 Difference]: Without dead ends: 97 [2021-11-21 00:13:07,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:13:07,989 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 37 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:07,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 426 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:13:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-21 00:13:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-21 00:13:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:13:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2021-11-21 00:13:08,009 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 67 [2021-11-21 00:13:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:08,010 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2021-11-21 00:13:08,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-21 00:13:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2021-11-21 00:13:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 00:13:08,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:08,012 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:08,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:08,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:08,239 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 97009324, now seen corresponding path program 1 times [2021-11-21 00:13:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:08,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456962303] [2021-11-21 00:13:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:08,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:08,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:13:08,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623827310] [2021-11-21 00:13:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:08,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:08,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:08,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:08,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e7bab2-03b3-483b-b85a-b29af54a9861/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:13:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:09,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 311 conjunts are in the unsatisfiable core [2021-11-21 00:13:09,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:09,513 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 00:13:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:14,707 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 21 treesize of output 20 [2021-11-21 00:13:14,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:14,716 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 21 treesize of output 20 [2021-11-21 00:13:19,403 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 44 treesize of output 40 [2021-11-21 00:13:23,698 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 00:13:23,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 76 [2021-11-21 00:13:23,817 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-21 00:13:23,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 71 [2021-11-21 00:13:23,855 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 00:13:23,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2021-11-21 00:13:26,146 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-21 00:13:26,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 110 [2021-11-21 00:13:39,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:39,978 INFO L354 Elim1Store]: treesize reduction 154, result has 14.0 percent of original size [2021-11-21 00:13:39,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 225 treesize of output 232 [2021-11-21 00:13:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:40,055 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-21 00:13:40,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 229 treesize of output 214 [2021-11-21 00:13:40,381 INFO L354 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2021-11-21 00:13:40,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 221 [2021-11-21 00:13:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:13:40,415 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 203 treesize of output 191 [2021-11-21 00:14:49,137 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-21 00:14:49,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 331 treesize of output 245 [2021-11-21 00:14:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:14:50,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:15:03,644 WARN L227 SmtUtils]: Spent 12.35s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:15:08,972 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:16:29,768 WARN L227 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 405 DAG size of output: 202 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:16:55,665 WARN L227 SmtUtils]: Spent 25.89s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:22:43,051 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (or (let ((.cse10 (+ |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset| 24))) (let ((.cse11 (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|))) (* (select .cse12 .cse10) (select .cse12 (+ 16 |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset|)))))) (let ((.cse9 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse11)) |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|))) (let ((.cse6 (mod (select .cse9 (+ |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset| 8)) 18446744073709551616))) (let ((.cse8 (= .cse6 0))) (let ((.cse4 (not .cse8)) (.cse0 (forall ((v_DerPreprocessor_1 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset|)) 0))) (.cse1 (forall ((v_DerPreprocessor_2 Int)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset|)) 0)))) (.cse2 (forall ((v_DerPreprocessor_1 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset|)) 0)))) (.cse3 (forall ((v_DerPreprocessor_2 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) |c_ULTIMATE.start_aws_array_list_capacity_~list#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_capacity_~list#1.offset|)) 0))) (.cse5 (mod .cse11 18446744073709551616))) (and (or (and .cse0 (or .cse1 .cse2) .cse3 .cse4) (<= .cse5 .cse6)) (or (let ((.cse7 (not (= (mod (select .cse9 .cse10) 18446744073709551616) 0)))) (and (or .cse7 .cse4) (or .cse0 .cse7) (or .cse1 .cse2 .cse8) (or .cse7 .cse3))) (< .cse6 .cse5))))))))) (not (= (select |c_#valid| |v_aws_mul_size_checked_#in~r#1.base_7|) 0)))) is different from true [2021-11-21 00:22:43,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:43,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456962303] [2021-11-21 00:22:43,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:22:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623827310] [2021-11-21 00:22:43,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623827310] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:22:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1466492285] [2021-11-21 00:22:43,081 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-11-21 00:22:43,082 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:22:43,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:22:43,094 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:22:43,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:22:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:50,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:50,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:22:50,969 INFO L244 Elim1Store]: Index analysis took 694 ms [2021-11-21 00:23:42,316 WARN L227 SmtUtils]: Spent 51.25s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:23:42,320 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 00:23:42,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 00:24:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19504 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