./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7 --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:18:53,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:18:53,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:18:53,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:18:53,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:18:53,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:18:53,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:18:53,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:18:53,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:18:53,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:18:53,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:18:53,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:18:53,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:18:53,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:18:53,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:18:53,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:18:53,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:18:53,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:18:53,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:18:53,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:18:53,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:18:53,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:18:53,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:18:53,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:18:53,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:18:53,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:18:53,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:18:53,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:18:53,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:18:53,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:18:53,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:18:53,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:18:53,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:18:53,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:18:53,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:18:53,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:18:53,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:18:53,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:18:53,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:18:53,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:18:53,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:18:53,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:18:53,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:18:53,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:18:53,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:18:53,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:18:53,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:18:53,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:18:53,525 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:18:53,525 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:18:53,527 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:18:53,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:18:53,528 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:18:53,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:18:53,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:18:53,529 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:18:53,530 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:18:53,530 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:18:53,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:18:53,531 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:18:53,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:18:53,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:18:53,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:18:53,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:18:53,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:18:53,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:18:53,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:18:53,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:18:53,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:18:53,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:18:53,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:18:53,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:18:53,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:18:53,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:18:53,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:18:53,538 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:18:53,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:18:53,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:18:53,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:18:53,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:18:53,539 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-25 20:18:53,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:18:53,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:18:53,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:18:53,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:18:53,900 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:18:53,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:18:54,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/129dc07f6/45fab99d12834d56b3bd22f732eefac3/FLAGdad30c285 [2021-11-25 20:18:54,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:18:54,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:18:55,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/129dc07f6/45fab99d12834d56b3bd22f732eefac3/FLAGdad30c285 [2021-11-25 20:18:55,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/129dc07f6/45fab99d12834d56b3bd22f732eefac3 [2021-11-25 20:18:55,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:18:55,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:18:55,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:18:55,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:18:55,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:18:55,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:18:55" (1/1) ... [2021-11-25 20:18:55,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3364d7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:55, skipping insertion in model container [2021-11-25 20:18:55,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:18:55" (1/1) ... [2021-11-25 20:18:55,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:18:55,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:18:55,993 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-25 20:18:56,003 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-25 20:18:57,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,555 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,564 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:57,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:18:58,246 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:18:58,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:18:58,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:18:58,250 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:18:58,250 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:18:58,251 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:18:58,252 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:18:58,254 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:18:58,255 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:18:58,517 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:18:58,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,968 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:58,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:59,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:18:59,181 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-25 20:18:59,196 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-25 20:18:59,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,263 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,277 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:18:59,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:18:59,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:18:59,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:18:59,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:18:59,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:18:59,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:18:59,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:18:59,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:18:59,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:18:59,359 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:18:59,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,560 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,560 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,585 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,586 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:18:59,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:59,997 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:18:59,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59 WrapperNode [2021-11-25 20:18:59,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:18:59,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:00,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:19:00,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:19:00,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,294 INFO L137 Inliner]: procedures = 768, calls = 3253, calls flagged for inlining = 78, calls inlined = 5, statements flattened = 337 [2021-11-25 20:19:00,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:00,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:19:00,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:19:00,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:19:00,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:19:00,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:19:00,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:19:00,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:19:00,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (1/1) ... [2021-11-25 20:19:00,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:00,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:00,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:19:00,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:19:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 20:19:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 20:19:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:19:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:19:00,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:19:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:19:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:19:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:19:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:19:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 20:19:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 20:19:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:19:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:19:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:19:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 20:19:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 20:19:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-25 20:19:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-25 20:19:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-25 20:19:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-25 20:19:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:19:00,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:19:00,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:19:01,193 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-25 20:19:01,207 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:19:01,261 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:19:01,261 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 20:19:01,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:01 BoogieIcfgContainer [2021-11-25 20:19:01,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:19:01,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:19:01,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:19:01,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:19:01,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:18:55" (1/3) ... [2021-11-25 20:19:01,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f5828b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:01, skipping insertion in model container [2021-11-25 20:19:01,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:59" (2/3) ... [2021-11-25 20:19:01,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f5828b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:01, skipping insertion in model container [2021-11-25 20:19:01,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:01" (3/3) ... [2021-11-25 20:19:01,278 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:19:01,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:19:01,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:19:01,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:19:01,359 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 [2021-11-25 20:19:01,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:19:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:19:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:19:01,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:01,390 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] [2021-11-25 20:19:01,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2007445460, now seen corresponding path program 1 times [2021-11-25 20:19:01,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:01,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675469228] [2021-11-25 20:19:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:01,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 20:19:01,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675469228] [2021-11-25 20:19:01,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675469228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:01,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:01,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:19:01,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873971279] [2021-11-25 20:19:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:01,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:19:01,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:19:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:02,045 INFO L87 Difference]: Start difference. First operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 20:19:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:02,132 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2021-11-25 20:19:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:19:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 50 [2021-11-25 20:19:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:02,145 INFO L225 Difference]: With dead ends: 85 [2021-11-25 20:19:02,145 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 20:19:02,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:02,153 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:02,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:19:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 20:19:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-25 20:19:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-11-25 20:19:02,246 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 50 [2021-11-25 20:19:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:02,249 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-11-25 20:19:02,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 20:19:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-11-25 20:19:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 20:19:02,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:02,253 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1] [2021-11-25 20:19:02,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:19:02,254 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1782800097, now seen corresponding path program 1 times [2021-11-25 20:19:02,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:02,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216087449] [2021-11-25 20:19:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:02,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:19:02,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216087449] [2021-11-25 20:19:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216087449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:02,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:02,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:19:02,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956128159] [2021-11-25 20:19:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:02,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:19:02,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:19:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:19:02,844 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 20:19:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:03,204 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-11-25 20:19:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:19:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2021-11-25 20:19:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:03,213 INFO L225 Difference]: With dead ends: 78 [2021-11-25 20:19:03,213 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 20:19:03,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:19:03,225 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:03,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 517 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 20:19:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-25 20:19:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-25 20:19:03,250 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 52 [2021-11-25 20:19:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:03,251 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-25 20:19:03,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 20:19:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-25 20:19:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 20:19:03,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:03,255 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:19:03,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 17086336, now seen corresponding path program 1 times [2021-11-25 20:19:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:03,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447244790] [2021-11-25 20:19:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:03,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 20:19:03,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:03,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447244790] [2021-11-25 20:19:03,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447244790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:03,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:03,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 20:19:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525346320] [2021-11-25 20:19:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:03,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:19:03,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:19:03,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:19:03,909 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 20:19:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:04,441 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2021-11-25 20:19:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:19:04,445 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 56 [2021-11-25 20:19:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:04,447 INFO L225 Difference]: With dead ends: 86 [2021-11-25 20:19:04,448 INFO L226 Difference]: Without dead ends: 84 [2021-11-25 20:19:04,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:19:04,450 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:04,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 727 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:19:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-25 20:19:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-11-25 20:19:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 41 states have internal predecessors, (41), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-25 20:19:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-11-25 20:19:04,483 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 56 [2021-11-25 20:19:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:04,484 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-11-25 20:19:04,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 20:19:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-11-25 20:19:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 20:19:04,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:04,489 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:04,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:19:04,490 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1027398026, now seen corresponding path program 1 times [2021-11-25 20:19:04,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:04,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854520838] [2021-11-25 20:19:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:04,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 20:19:04,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854520838] [2021-11-25 20:19:04,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854520838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:04,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:04,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 20:19:04,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849135764] [2021-11-25 20:19:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:04,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:19:04,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:19:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:19:04,903 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 20:19:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:05,208 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-11-25 20:19:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:19:05,209 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 64 [2021-11-25 20:19:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:05,212 INFO L225 Difference]: With dead ends: 90 [2021-11-25 20:19:05,212 INFO L226 Difference]: Without dead ends: 88 [2021-11-25 20:19:05,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:19:05,214 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 39 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:05,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 660 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-25 20:19:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2021-11-25 20:19:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 47 states have internal predecessors, (47), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-25 20:19:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-25 20:19:05,232 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 64 [2021-11-25 20:19:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:05,233 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-25 20:19:05,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 20:19:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-25 20:19:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 20:19:05,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:05,236 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:05,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:19:05,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1591579472, now seen corresponding path program 1 times [2021-11-25 20:19:05,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:05,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723088921] [2021-11-25 20:19:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:05,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-25 20:19:05,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:05,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723088921] [2021-11-25 20:19:05,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723088921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:05,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:05,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:19:05,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811065641] [2021-11-25 20:19:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:05,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:19:05,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:19:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:19:05,712 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:19:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:06,046 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2021-11-25 20:19:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:19:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) Word has length 79 [2021-11-25 20:19:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:06,050 INFO L225 Difference]: With dead ends: 94 [2021-11-25 20:19:06,051 INFO L226 Difference]: Without dead ends: 92 [2021-11-25 20:19:06,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:19:06,054 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 13 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:06,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1025 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-25 20:19:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-11-25 20:19:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 50 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-25 20:19:06,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2021-11-25 20:19:06,078 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 79 [2021-11-25 20:19:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:06,080 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2021-11-25 20:19:06,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:19:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2021-11-25 20:19:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 20:19:06,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:06,089 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:06,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:19:06,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -886361530, now seen corresponding path program 1 times [2021-11-25 20:19:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812802510] [2021-11-25 20:19:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:06,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-25 20:19:06,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812802510] [2021-11-25 20:19:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812802510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:06,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:06,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:19:06,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684475713] [2021-11-25 20:19:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:06,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:19:06,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:06,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:19:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:19:06,774 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 20:19:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:07,063 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2021-11-25 20:19:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:19:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-11-25 20:19:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:07,066 INFO L225 Difference]: With dead ends: 92 [2021-11-25 20:19:07,067 INFO L226 Difference]: Without dead ends: 88 [2021-11-25 20:19:07,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:19:07,072 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:07,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 524 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-25 20:19:07,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2021-11-25 20:19:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-11-25 20:19:07,091 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 87 [2021-11-25 20:19:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:07,093 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-11-25 20:19:07,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 20:19:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-11-25 20:19:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 20:19:07,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:07,101 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:07,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:19:07,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1344876461, now seen corresponding path program 1 times [2021-11-25 20:19:07,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628575314] [2021-11-25 20:19:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 20:19:07,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:07,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628575314] [2021-11-25 20:19:07,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628575314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:07,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:07,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:19:07,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676522370] [2021-11-25 20:19:07,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:07,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:19:07,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:19:07,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:19:07,923 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 20:19:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:08,244 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-11-25 20:19:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:19:08,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 78 [2021-11-25 20:19:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:08,247 INFO L225 Difference]: With dead ends: 94 [2021-11-25 20:19:08,247 INFO L226 Difference]: Without dead ends: 63 [2021-11-25 20:19:08,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:19:08,248 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 33 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:08,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 725 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-25 20:19:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-25 20:19:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0) internal successors, (35), 35 states have internal predecessors, (35), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-11-25 20:19:08,276 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 78 [2021-11-25 20:19:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:08,276 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-11-25 20:19:08,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 20:19:08,277 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-11-25 20:19:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 20:19:08,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:08,279 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:08,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:19:08,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -228044931, now seen corresponding path program 1 times [2021-11-25 20:19:08,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:08,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356800506] [2021-11-25 20:19:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:08,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:19:08,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:19:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:19:09,033 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:19:09,033 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:19:09,034 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:19:09,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:19:09,039 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:09,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:19:09,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:19:09 BoogieIcfgContainer [2021-11-25 20:19:09,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:19:09,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:19:09,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:19:09,145 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:19:09,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:01" (3/4) ... [2021-11-25 20:19:09,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 20:19:09,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:19:09,150 INFO L158 Benchmark]: Toolchain (without parser) took 13792.18ms. Allocated memory was 94.4MB in the beginning and 239.1MB in the end (delta: 144.7MB). Free memory was 67.6MB in the beginning and 157.8MB in the end (delta: -90.2MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,150 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:19:09,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4639.19ms. Allocated memory was 94.4MB in the beginning and 153.1MB in the end (delta: 58.7MB). Free memory was 67.6MB in the beginning and 64.3MB in the end (delta: 3.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 296.39ms. Allocated memory is still 153.1MB. Free memory was 64.3MB in the beginning and 54.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,151 INFO L158 Benchmark]: Boogie Preprocessor took 96.49ms. Allocated memory is still 153.1MB. Free memory was 54.6MB in the beginning and 89.4MB in the end (delta: -34.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,152 INFO L158 Benchmark]: RCFGBuilder took 871.31ms. Allocated memory is still 153.1MB. Free memory was 88.6MB in the beginning and 55.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,152 INFO L158 Benchmark]: TraceAbstraction took 7874.64ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 55.6MB in the beginning and 157.8MB in the end (delta: -102.2MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. [2021-11-25 20:19:09,153 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 239.1MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:19:09,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4639.19ms. Allocated memory was 94.4MB in the beginning and 153.1MB in the end (delta: 58.7MB). Free memory was 67.6MB in the beginning and 64.3MB in the end (delta: 3.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 296.39ms. Allocated memory is still 153.1MB. Free memory was 64.3MB in the beginning and 54.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.49ms. Allocated memory is still 153.1MB. Free memory was 54.6MB in the beginning and 89.4MB in the end (delta: -34.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * RCFGBuilder took 871.31ms. Allocated memory is still 153.1MB. Free memory was 88.6MB in the beginning and 55.6MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7874.64ms. Allocated memory was 153.1MB in the beginning and 239.1MB in the end (delta: 86.0MB). Free memory was 55.6MB in the beginning and 157.8MB in the end (delta: -102.2MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 239.1MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-36893488147419103231, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-2:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}, str[cap - 1]=0] [L6839] return str; [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-2:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-18446744073709551615, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-3:0}, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}, str[cap - 1]=0] [L6839] return str; [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={-2:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] return rval; VAL [\result=1, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, nondet_uint64_t()=18482772870728515581, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, a[i]=257, b={-3:0}, b={-3:0}, b[i]=0, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 4246 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4171 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1454 IncrementalHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 441 mSDtfsCounter, 1454 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=5, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 1311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 334/334 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 20:19:09,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7 --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:19:11,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:19:11,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:19:12,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:19:12,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:19:12,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:19:12,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:19:12,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:19:12,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:19:12,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:19:12,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:19:12,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:19:12,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:19:12,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:19:12,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:19:12,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:19:12,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:19:12,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:19:12,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:19:12,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:19:12,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:19:12,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:19:12,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:19:12,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:19:12,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:19:12,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:19:12,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:19:12,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:19:12,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:19:12,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:19:12,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:19:12,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:19:12,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:19:12,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:19:12,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:19:12,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:19:12,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:19:12,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:19:12,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:19:12,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:19:12,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:19:12,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-25 20:19:12,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:19:12,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:19:12,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:19:12,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:19:12,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:19:12,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:19:12,218 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:19:12,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:19:12,218 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:19:12,218 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:19:12,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:19:12,220 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:19:12,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:19:12,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:19:12,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:19:12,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:19:12,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:19:12,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:19:12,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:19:12,224 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:19:12,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:19:12,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:19:12,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:19:12,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:19:12,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:19:12,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:19:12,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:12,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:19:12,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:19:12,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:19:12,227 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:19:12,228 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:19:12,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:19:12,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:19:12,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:19:12,229 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-25 20:19:12,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:19:12,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:19:12,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:19:12,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:19:12,714 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:19:12,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:19:12,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/f518741f0/754f53a7872b4f17bd59537b9c3418cf/FLAGa01e9cc13 [2021-11-25 20:19:13,842 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:19:13,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:19:13,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/f518741f0/754f53a7872b4f17bd59537b9c3418cf/FLAGa01e9cc13 [2021-11-25 20:19:14,220 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/data/f518741f0/754f53a7872b4f17bd59537b9c3418cf [2021-11-25 20:19:14,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:19:14,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:19:14,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:14,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:19:14,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:19:14,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:14" (1/1) ... [2021-11-25 20:19:14,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404fe641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:14, skipping insertion in model container [2021-11-25 20:19:14,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:14" (1/1) ... [2021-11-25 20:19:14,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:19:14,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:19:14,807 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-25 20:19:14,817 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-25 20:19:16,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,360 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:16,363 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,014 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:19:17,015 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:19:17,016 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:19:17,018 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:19:17,019 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:19:17,020 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:19:17,021 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:19:17,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:19:17,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:19:17,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:19:17,271 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:19:17,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:17,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:17,964 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 20:19:18,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:19:18,082 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-25 20:19:18,083 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-25 20:19:18,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:19:18,212 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:19:18,213 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:19:18,213 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:19:18,214 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:19:18,215 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:19:18,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:19:18,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:19:18,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:19:18,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:19:18,237 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:19:18,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,427 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,439 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:18,559 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:19:18,587 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-25 20:19:18,587 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_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-25 20:19:18,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:19:18,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:19:18,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:19:18,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:19:18,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:19:18,714 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:19:18,714 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:19:18,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:19:18,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:19:18,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:19:18,750 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:19:18,900 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:18,900 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:19:19,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:19,413 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:19:19,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19 WrapperNode [2021-11-25 20:19:19,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:19,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:19,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:19:19,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:19:19,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,673 INFO L137 Inliner]: procedures = 788, calls = 3253, calls flagged for inlining = 80, calls inlined = 5, statements flattened = 338 [2021-11-25 20:19:19,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:19,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:19:19,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:19:19,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:19:19,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:19:19,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:19:19,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:19:19,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:19:19,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (1/1) ... [2021-11-25 20:19:19,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:19,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:19:19,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:19:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 20:19:19,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 20:19:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:19:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:19:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:19:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:19:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:19:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:19:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 20:19:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 20:19:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 20:19:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 20:19:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:19:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 20:19:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:19:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:19:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:19:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2021-11-25 20:19:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2021-11-25 20:19:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-25 20:19:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-25 20:19:20,328 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:19:20,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:19:20,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-25 20:19:20,828 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:19:20,837 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:19:20,840 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 20:19:20,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:20 BoogieIcfgContainer [2021-11-25 20:19:20,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:19:20,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:19:20,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:19:20,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:19:20,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:19:14" (1/3) ... [2021-11-25 20:19:20,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c1c751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:20, skipping insertion in model container [2021-11-25 20:19:20,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:19" (2/3) ... [2021-11-25 20:19:20,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c1c751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:20, skipping insertion in model container [2021-11-25 20:19:20,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:20" (3/3) ... [2021-11-25 20:19:20,858 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-25 20:19:20,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:19:20,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:19:20,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:19:20,930 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 [2021-11-25 20:19:20,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:19:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:19:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:19:20,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:20,963 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:20,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1163022186, now seen corresponding path program 1 times [2021-11-25 20:19:20,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:20,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203125487] [2021-11-25 20:19:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:20,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:20,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:20,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:21,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:19:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:21,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 20:19:21,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-25 20:19:21,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:21,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:21,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203125487] [2021-11-25 20:19:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203125487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:21,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:21,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:19:21,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501483517] [2021-11-25 20:19:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:19:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:19:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:21,743 INFO L87 Difference]: Start difference. First operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 20:19:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:21,807 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2021-11-25 20:19:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:19:21,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 67 [2021-11-25 20:19:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:21,828 INFO L225 Difference]: With dead ends: 139 [2021-11-25 20:19:21,828 INFO L226 Difference]: Without dead ends: 65 [2021-11-25 20:19:21,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:21,841 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:21,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:19:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-25 20:19:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-25 20:19:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 39 states have internal predecessors, (41), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-11-25 20:19:21,921 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 67 [2021-11-25 20:19:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:21,922 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-11-25 20:19:21,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 20:19:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-11-25 20:19:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 20:19:21,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:21,932 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:21,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 20:19:22,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:22,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -447828983, now seen corresponding path program 1 times [2021-11-25 20:19:22,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899162279] [2021-11-25 20:19:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:22,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:22,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:22,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:19:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:22,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:19:22,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 20:19:22,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:22,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:22,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899162279] [2021-11-25 20:19:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899162279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:22,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:22,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:19:22,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517404435] [2021-11-25 20:19:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:22,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:19:22,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:19:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:19:22,953 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 20:19:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:23,310 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2021-11-25 20:19:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:19:23,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 70 [2021-11-25 20:19:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:23,314 INFO L225 Difference]: With dead ends: 89 [2021-11-25 20:19:23,314 INFO L226 Difference]: Without dead ends: 65 [2021-11-25 20:19:23,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:19:23,316 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:23,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 663 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-25 20:19:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-25 20:19:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-11-25 20:19:23,330 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 70 [2021-11-25 20:19:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:23,331 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-11-25 20:19:23,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-25 20:19:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-11-25 20:19:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:19:23,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:23,334 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:23,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:23,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:23,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1505925942, now seen corresponding path program 1 times [2021-11-25 20:19:23,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39621770] [2021-11-25 20:19:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:23,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:23,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:19:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:23,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 20:19:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 20:19:24,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:24,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39621770] [2021-11-25 20:19:24,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39621770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:24,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:24,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 20:19:24,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187438372] [2021-11-25 20:19:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:24,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:19:24,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:19:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:19:24,297 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 20:19:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:24,947 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-11-25 20:19:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:19:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 75 [2021-11-25 20:19:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:24,958 INFO L225 Difference]: With dead ends: 94 [2021-11-25 20:19:24,958 INFO L226 Difference]: Without dead ends: 92 [2021-11-25 20:19:24,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:19:24,960 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 38 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:24,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 914 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:19:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-25 20:19:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2021-11-25 20:19:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-25 20:19:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2021-11-25 20:19:24,989 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 75 [2021-11-25 20:19:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:24,990 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2021-11-25 20:19:24,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-25 20:19:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2021-11-25 20:19:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 20:19:24,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:24,997 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:25,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:25,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:25,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -892933696, now seen corresponding path program 1 times [2021-11-25 20:19:25,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:25,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836124264] [2021-11-25 20:19:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:25,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:25,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:25,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 20:19:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:25,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 20:19:25,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-25 20:19:26,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:26,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:26,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836124264] [2021-11-25 20:19:26,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836124264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:26,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:26,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 20:19:26,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122413716] [2021-11-25 20:19:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:26,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:19:26,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:19:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:19:26,194 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 20:19:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:26,627 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2021-11-25 20:19:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:19:26,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 83 [2021-11-25 20:19:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:26,631 INFO L225 Difference]: With dead ends: 98 [2021-11-25 20:19:26,631 INFO L226 Difference]: Without dead ends: 96 [2021-11-25 20:19:26,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:19:26,637 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 36 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:26,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 854 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:19:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-25 20:19:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-25 20:19:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 55 states have internal predecessors, (55), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-25 20:19:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-11-25 20:19:26,666 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 83 [2021-11-25 20:19:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:26,668 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-11-25 20:19:26,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 20:19:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-11-25 20:19:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-25 20:19:26,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:26,681 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:26,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:26,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:26,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 829878033, now seen corresponding path program 1 times [2021-11-25 20:19:26,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:26,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202213742] [2021-11-25 20:19:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:26,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:26,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:26,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:19:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:27,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 20:19:27,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-25 20:19:27,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:27,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:27,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202213742] [2021-11-25 20:19:27,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202213742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:27,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:27,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:19:27,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225487465] [2021-11-25 20:19:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:19:27,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:19:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:19:27,629 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:19:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:28,053 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-25 20:19:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:19:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2021-11-25 20:19:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:28,057 INFO L225 Difference]: With dead ends: 102 [2021-11-25 20:19:28,057 INFO L226 Difference]: Without dead ends: 100 [2021-11-25 20:19:28,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:19:28,059 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 14 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:28,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1199 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:19:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-25 20:19:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-25 20:19:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 58 states have internal predecessors, (58), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-25 20:19:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-11-25 20:19:28,078 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 107 [2021-11-25 20:19:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:28,088 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-11-25 20:19:28,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 20:19:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-11-25 20:19:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:19:28,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:28,092 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:28,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:28,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:28,300 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 265370887, now seen corresponding path program 1 times [2021-11-25 20:19:28,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:28,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874968376] [2021-11-25 20:19:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:28,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:28,304 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:28,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:19:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:28,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 20:19:28,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-25 20:19:29,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:29,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874968376] [2021-11-25 20:19:29,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874968376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:29,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:29,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:19:29,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387377660] [2021-11-25 20:19:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:29,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:19:29,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:19:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:19:29,168 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 20:19:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:29,510 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2021-11-25 20:19:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:19:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 115 [2021-11-25 20:19:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:29,514 INFO L225 Difference]: With dead ends: 100 [2021-11-25 20:19:29,515 INFO L226 Difference]: Without dead ends: 96 [2021-11-25 20:19:29,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:19:29,516 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 26 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:29,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 752 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:19:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-25 20:19:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2021-11-25 20:19:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-11-25 20:19:29,531 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 115 [2021-11-25 20:19:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:29,532 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-11-25 20:19:29,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 20:19:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-11-25 20:19:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:19:29,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:29,534 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:29,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:29,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:29,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash -565706850, now seen corresponding path program 1 times [2021-11-25 20:19:29,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996926504] [2021-11-25 20:19:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:29,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:29,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:29,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:29,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 20:19:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:30,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 20:19:30,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:30,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 20:19:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-25 20:19:30,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:30,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:19:30,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996926504] [2021-11-25 20:19:30,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996926504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:30,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:30,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:19:30,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822549496] [2021-11-25 20:19:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:30,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:19:30,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:19:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:19:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:30,501 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:19:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:30,756 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2021-11-25 20:19:30,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:19:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 100 [2021-11-25 20:19:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:30,758 INFO L225 Difference]: With dead ends: 102 [2021-11-25 20:19:30,758 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 20:19:30,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:19:30,760 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:30,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 547 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 20:19:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-25 20:19:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0) internal successors, (43), 43 states have internal predecessors, (43), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 20:19:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-11-25 20:19:30,773 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 100 [2021-11-25 20:19:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:30,773 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-11-25 20:19:30,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 20:19:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-11-25 20:19:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 20:19:30,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:30,776 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:30,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:30,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:30,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -549207241, now seen corresponding path program 1 times [2021-11-25 20:19:30,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:19:30,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705515871] [2021-11-25 20:19:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:30,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:19:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:19:31,000 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:19:31,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 20:19:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:19:31,916 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:19:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:19:32,906 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 20:19:32,907 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:19:32,908 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:19:32,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:33,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:19:33,136 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:33,139 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:19:33,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:19:33 BoogieIcfgContainer [2021-11-25 20:19:33,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:19:33,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:19:33,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:19:33,236 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:19:33,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:20" (3/4) ... [2021-11-25 20:19:33,240 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 20:19:33,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:19:33,241 INFO L158 Benchmark]: Toolchain (without parser) took 19016.26ms. Allocated memory was 67.1MB in the beginning and 297.8MB in the end (delta: 230.7MB). Free memory was 35.1MB in the beginning and 204.6MB in the end (delta: -169.5MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,241 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 48.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:19:33,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5187.94ms. Allocated memory was 67.1MB in the beginning and 205.5MB in the end (delta: 138.4MB). Free memory was 34.9MB in the beginning and 111.8MB in the end (delta: -76.9MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 258.88ms. Allocated memory is still 205.5MB. Free memory was 111.8MB in the beginning and 101.5MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,242 INFO L158 Benchmark]: Boogie Preprocessor took 129.87ms. Allocated memory is still 205.5MB. Free memory was 101.5MB in the beginning and 96.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,243 INFO L158 Benchmark]: RCFGBuilder took 1042.95ms. Allocated memory is still 205.5MB. Free memory was 96.3MB in the beginning and 113.2MB in the end (delta: -16.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,243 INFO L158 Benchmark]: TraceAbstraction took 12385.45ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 112.1MB in the beginning and 205.6MB in the end (delta: -93.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:19:33,244 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 297.8MB. Free memory was 205.6MB in the beginning and 204.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:19:33,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 48.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5187.94ms. Allocated memory was 67.1MB in the beginning and 205.5MB in the end (delta: 138.4MB). Free memory was 34.9MB in the beginning and 111.8MB in the end (delta: -76.9MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 258.88ms. Allocated memory is still 205.5MB. Free memory was 111.8MB in the beginning and 101.5MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.87ms. Allocated memory is still 205.5MB. Free memory was 101.5MB in the beginning and 96.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1042.95ms. Allocated memory is still 205.5MB. Free memory was 96.3MB in the beginning and 113.2MB in the end (delta: -16.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 12385.45ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 112.1MB in the beginning and 205.6MB in the end (delta: -93.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 297.8MB. Free memory was 205.6MB in the beginning and 204.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=64] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={14:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={14:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={14:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, size=64] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={9:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={9:0}, cap=64, max_size=64, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={9:0}, nondet_bool()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={9:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str1={14:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={14:0}, str={14:0}] [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}, str={9:0}, str={9:0}] [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={14:0}, a={14:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L10799] return rval; VAL [\result=1, a={14:0}, a={14:0}, b={9:0}, b={9:0}, rval=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, len=1073741824, nondet_uint64_t()=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=1073741824, a={14:0}, a={14:0}, b={9:0}, b={9:0}, i=0, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=1073741824, a={14:0}, a={14:0}, a[i]=48, b={9:0}, b={9:0}, b[i]=-80, i=0, len=1073741824, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={5:0}, s_tolower_table={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 5015 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4468 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 547 mSDtfsCounter, 958 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 636 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 610 ConstructedInterpolants, 0 QuantifiedInterpolants, 1351 SizeOfPredicates, 55 NumberOfNonLiveVariables, 3221 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 597/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 20:19:33,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0220e-1c2a-4c1d-bd9c-1c351ed5d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample