./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:15:58,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:15:58,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:15:58,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:15:58,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:15:58,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:15:58,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:15:58,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:15:58,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:15:58,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:15:58,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:15:58,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:15:58,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:15:58,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:15:58,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:15:58,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:15:58,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:15:58,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:15:58,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:15:58,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:15:58,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:15:58,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:15:58,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:15:58,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:15:58,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:15:58,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:15:58,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:15:58,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:15:58,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:15:58,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:15:58,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:15:58,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:15:58,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:15:58,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:15:58,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:15:58,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:15:58,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:15:58,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:15:58,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:15:58,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:15:58,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:15:58,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:15:58,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:15:58,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:15:58,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:15:58,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:15:58,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:15:58,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:15:58,547 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:15:58,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:15:58,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:15:58,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:15:58,549 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:15:58,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:15:58,550 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:15:58,550 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:15:58,550 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:15:58,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:15:58,551 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:15:58,551 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:15:58,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:15:58,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:15:58,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:15:58,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:15:58,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:15:58,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:15:58,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:15:58,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:15:58,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:15:58,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:15:58,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:15:58,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:15:58,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:15:58,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:15:58,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:15:58,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:15:58,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:15:58,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:15:58,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:15:58,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:15:58,559 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_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2021-11-23 02:15:58,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:15:58,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:15:58,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:15:58,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:15:58,844 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:15:58,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-23 02:15:58,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/data/760ada042/c032374f3069463ab05387f750687de6/FLAG2087d1e95 [2021-11-23 02:15:59,966 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:15:59,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-23 02:16:00,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/data/760ada042/c032374f3069463ab05387f750687de6/FLAG2087d1e95 [2021-11-23 02:16:00,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/data/760ada042/c032374f3069463ab05387f750687de6 [2021-11-23 02:16:00,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:00,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:00,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:00,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:00,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:00,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:00" (1/1) ... [2021-11-23 02:16:00,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2392235f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:00, skipping insertion in model container [2021-11-23 02:16:00,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:00" (1/1) ... [2021-11-23 02:16:00,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:00,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:00,807 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_d892d598-99e6-4d07-a95a-4b32c7a563cf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-23 02:16:00,814 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_d892d598-99e6-4d07-a95a-4b32c7a563cf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-23 02:16:02,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,296 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,297 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,299 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:02,800 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:02,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:02,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:02,803 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:02,805 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:02,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:02,807 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:02,808 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:02,809 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:02,809 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:02,996 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:03,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:03,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:03,362 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_d892d598-99e6-4d07-a95a-4b32c7a563cf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-23 02:16:03,362 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_d892d598-99e6-4d07-a95a-4b32c7a563cf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-23 02:16:03,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,437 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,492 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:16:03,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:16:03,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:16:03,495 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:16:03,496 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:16:03,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:16:03,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:16:03,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:16:03,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:16:03,500 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:16:03,524 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:16:03,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:16:03,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:04,075 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:04,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04 WrapperNode [2021-11-23 02:16:04,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:04,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:04,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:04,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:04,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,331 INFO L137 Inliner]: procedures = 690, calls = 2740, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2021-11-23 02:16:04,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:04,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:04,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:04,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:04,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:04,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:04,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:04,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:04,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (1/1) ... [2021-11-23 02:16:04,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:04,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:04,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:04,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-23 02:16:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-23 02:16:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:16:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 02:16:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 02:16:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-23 02:16:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-23 02:16:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-23 02:16:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:16:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:16:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:16:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:16:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:16:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 02:16:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 02:16:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:16:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:16:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:16:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:16:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 02:16:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 02:16:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:16:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:16:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-23 02:16:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-23 02:16:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:16:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:16:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-23 02:16:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-23 02:16:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:16:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-23 02:16:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-23 02:16:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:16:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:16:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-11-23 02:16:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-11-23 02:16:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 02:16:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 02:16:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-23 02:16:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-23 02:16:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 02:16:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 02:16:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:16:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-23 02:16:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2021-11-23 02:16:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2021-11-23 02:16:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:05,012 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:05,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:05,300 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-11-23 02:16:06,616 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:06,722 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:06,722 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:16:06,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:06 BoogieIcfgContainer [2021-11-23 02:16:06,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:06,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:06,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:06,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:06,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:00" (1/3) ... [2021-11-23 02:16:06,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7792049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:06, skipping insertion in model container [2021-11-23 02:16:06,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:04" (2/3) ... [2021-11-23 02:16:06,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7792049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:06, skipping insertion in model container [2021-11-23 02:16:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:06" (3/3) ... [2021-11-23 02:16:06,738 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2021-11-23 02:16:06,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:06,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:06,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:06,825 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 [2021-11-23 02:16:06,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-23 02:16:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:16:06,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:06,860 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:06,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2021-11-23 02:16:06,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:06,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380082833] [2021-11-23 02:16:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:06,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:16:07,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:07,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380082833] [2021-11-23 02:16:07,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380082833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:07,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:07,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:16:07,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758439904] [2021-11-23 02:16:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:07,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:16:07,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:16:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:16:07,773 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:16:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:08,165 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2021-11-23 02:16:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:16:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2021-11-23 02:16:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:08,191 INFO L225 Difference]: With dead ends: 197 [2021-11-23 02:16:08,191 INFO L226 Difference]: Without dead ends: 152 [2021-11-23 02:16:08,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:16:08,205 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:08,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 777 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:16:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-23 02:16:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2021-11-23 02:16:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-11-23 02:16:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2021-11-23 02:16:08,289 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2021-11-23 02:16:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:08,290 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2021-11-23 02:16:08,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 02:16:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2021-11-23 02:16:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:16:08,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:08,294 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:08,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:16:08,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2021-11-23 02:16:08,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813834194] [2021-11-23 02:16:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:08,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:16:08,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:08,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813834194] [2021-11-23 02:16:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813834194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:08,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:08,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:16:08,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614133845] [2021-11-23 02:16:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:08,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:16:08,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:16:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:16:08,615 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-23 02:16:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:08,801 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2021-11-23 02:16:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:16:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-11-23 02:16:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:08,808 INFO L225 Difference]: With dead ends: 174 [2021-11-23 02:16:08,809 INFO L226 Difference]: Without dead ends: 134 [2021-11-23 02:16:08,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:16:08,814 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:08,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 552 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-23 02:16:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-23 02:16:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-23 02:16:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2021-11-23 02:16:08,860 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2021-11-23 02:16:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:08,861 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2021-11-23 02:16:08,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-23 02:16:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2021-11-23 02:16:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:16:08,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:08,867 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:08,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:16:08,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2021-11-23 02:16:08,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:08,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418502439] [2021-11-23 02:16:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:08,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:16:09,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418502439] [2021-11-23 02:16:09,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418502439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:09,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:09,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:16:09,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009603773] [2021-11-23 02:16:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:09,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:16:09,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:16:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:16:09,266 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:09,792 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2021-11-23 02:16:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:16:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2021-11-23 02:16:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:09,795 INFO L225 Difference]: With dead ends: 190 [2021-11-23 02:16:09,796 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 02:16:09,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:16:09,798 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:09,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 871 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:16:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 02:16:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2021-11-23 02:16:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-23 02:16:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2021-11-23 02:16:09,816 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2021-11-23 02:16:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:09,816 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2021-11-23 02:16:09,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-23 02:16:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2021-11-23 02:16:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:16:09,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:09,820 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:09,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:16:09,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2021-11-23 02:16:09,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:09,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176587715] [2021-11-23 02:16:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:09,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:16:10,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:10,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176587715] [2021-11-23 02:16:10,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176587715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:10,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:10,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:16:10,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868715809] [2021-11-23 02:16:10,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:10,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:16:10,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:10,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:16:10,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:16:10,094 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-23 02:16:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:10,254 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2021-11-23 02:16:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:16:10,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-11-23 02:16:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:10,257 INFO L225 Difference]: With dead ends: 170 [2021-11-23 02:16:10,257 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 02:16:10,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:16:10,259 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:10,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 832 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 02:16:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-11-23 02:16:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-23 02:16:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2021-11-23 02:16:10,274 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2021-11-23 02:16:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:10,274 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2021-11-23 02:16:10,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-23 02:16:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2021-11-23 02:16:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:16:10,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:10,277 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:10,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:16:10,277 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2021-11-23 02:16:10,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:10,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438086618] [2021-11-23 02:16:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:10,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:16:10,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:10,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438086618] [2021-11-23 02:16:10,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438086618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:10,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634183311] [2021-11-23 02:16:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:10,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:10,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:10,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d892d598-99e6-4d07-a95a-4b32c7a563cf/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:16:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:11,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-23 02:16:11,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:11,688 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-23 02:16:11,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 02:16:11,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:16:11,798 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:16:11,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-23 02:16:17,109 INFO L354 Elim1Store]: treesize reduction 120, result has 21.6 percent of original size [2021-11-23 02:16:17,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 348 treesize of output 224 [2021-11-23 02:16:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:16:18,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:55,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634183311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:55,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [735467804] [2021-11-23 02:16:55,390 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2021-11-23 02:16:55,390 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:55,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:55,400 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:55,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:42,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-23 02:17:42,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-23 02:18:04,752 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3239 for LOIs [2021-11-23 02:18:07,422 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3264 for LOIs [2021-11-23 02:18:35,979 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3310 for LOIs [2021-11-23 02:18:55,632 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:19:53,706 WARN L227 SmtUtils]: Spent 54.12s on a formula simplification that was a NOOP. DAG size: 3244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:51,377 WARN L227 SmtUtils]: Spent 55.46s on a formula simplification that was a NOOP. DAG size: 3239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)