./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_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_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/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_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/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_4be9bb27-879c-4521-9909-3cba628d0cce/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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:32:39,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:32:39,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:32:39,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:32:39,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:32:39,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:32:39,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:32:39,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:32:39,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:32:39,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:32:39,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:32:39,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:32:39,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:32:39,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:32:39,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:32:39,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:32:39,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:32:39,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:32:39,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:32:39,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:32:39,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:32:39,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:32:39,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:32:39,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:32:39,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:32:39,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:32:39,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:32:39,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:32:39,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:32:39,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:32:39,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:32:39,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:32:39,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:32:39,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:32:39,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:32:39,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:32:39,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:32:39,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:32:39,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:32:39,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:32:39,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:32:39,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:32:39,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:32:39,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:32:39,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:32:39,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:32:39,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:32:39,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:32:39,472 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:32:39,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:32:39,473 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:32:39,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:32:39,474 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:32:39,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:32:39,475 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:32:39,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:32:39,475 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:32:39,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:32:39,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:32:39,476 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:32:39,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:32:39,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:32:39,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:32:39,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:32:39,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:32:39,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:32:39,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:32:39,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:32:39,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:32:39,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:32:39,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:32:39,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:39,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:32:39,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:32:39,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:32:39,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:32:39,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:32:39,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:32:39,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:32:39,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:32:39,483 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_4be9bb27-879c-4521-9909-3cba628d0cce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-25 20:32:39,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:32:39,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:32:39,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:32:39,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:32:39,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:32:39,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-25 20:32:39,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/data/6d6594a0c/20a25ba0acfb411cbde6f4a1840a94bf/FLAG92e76f93b [2021-11-25 20:32:40,841 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:32:40,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-25 20:32:40,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/data/6d6594a0c/20a25ba0acfb411cbde6f4a1840a94bf/FLAG92e76f93b [2021-11-25 20:32:41,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/data/6d6594a0c/20a25ba0acfb411cbde6f4a1840a94bf [2021-11-25 20:32:41,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:32:41,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:32:41,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:41,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:32:41,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:32:41,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:41" (1/1) ... [2021-11-25 20:32:41,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd87812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:41, skipping insertion in model container [2021-11-25 20:32:41,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:41" (1/1) ... [2021-11-25 20:32:41,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:32:41,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:32:41,711 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_4be9bb27-879c-4521-9909-3cba628d0cce/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-25 20:32:41,718 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_4be9bb27-879c-4521-9909-3cba628d0cce/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-25 20:32:42,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:42,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:32:43,354 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:32:43,357 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:32:43,359 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:32:43,361 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:32:43,366 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:32:43,367 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:32:43,367 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:32:43,372 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:32:43,373 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:32:43,537 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:32:43,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:43,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:32:43,741 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_4be9bb27-879c-4521-9909-3cba628d0cce/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-25 20:32:43,741 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_4be9bb27-879c-4521-9909-3cba628d0cce/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-25 20:32:43,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,840 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:32:43,841 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:32:43,841 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:32:43,842 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:32:43,843 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:32:43,843 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:32:43,844 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:32:43,844 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:32:43,845 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:32:43,845 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:32:43,880 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:32:43,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:32:43,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:44,328 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:32:44,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44 WrapperNode [2021-11-25 20:32:44,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:44,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:44,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:32:44,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:32:44,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,580 INFO L137 Inliner]: procedures = 691, calls = 2504, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 817 [2021-11-25 20:32:44,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:44,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:32:44,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:32:44,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:32:44,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:32:44,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:32:44,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:32:44,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:32:44,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (1/1) ... [2021-11-25 20:32:44,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:44,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:44,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:32:44,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:32:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 20:32:44,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 20:32:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:32:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 20:32:44,813 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 20:32:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:32:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:32:44,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:32:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2021-11-25 20:32:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2021-11-25 20:32:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:32:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:32:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:32:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:32:44,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:32:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 20:32:44,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 20:32:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-25 20:32:44,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-25 20:32:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:32:44,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:32:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:32:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:32:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:32:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 20:32:44,819 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 20:32:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:32:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-25 20:32:44,821 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-25 20:32:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-25 20:32:44,821 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-25 20:32:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:32:45,161 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:32:45,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:32:46,791 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:32:47,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:32:47,043 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:32:47,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:47 BoogieIcfgContainer [2021-11-25 20:32:47,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:32:47,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:32:47,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:32:47,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:32:47,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:32:41" (1/3) ... [2021-11-25 20:32:47,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c4dd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:47, skipping insertion in model container [2021-11-25 20:32:47,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:44" (2/3) ... [2021-11-25 20:32:47,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c4dd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:47, skipping insertion in model container [2021-11-25 20:32:47,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:47" (3/3) ... [2021-11-25 20:32:47,056 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2021-11-25 20:32:47,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:32:47,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:32:47,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:32:47,145 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 20:32:47,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:32:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-25 20:32:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:32:47,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:47,181 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] [2021-11-25 20:32:47,181 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 591884185, now seen corresponding path program 1 times [2021-11-25 20:32:47,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506586730] [2021-11-25 20:32:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:47,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-25 20:32:49,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:49,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506586730] [2021-11-25 20:32:49,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506586730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:49,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:49,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:32:49,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922174656] [2021-11-25 20:32:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:49,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:32:49,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:32:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:32:49,073 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-25 20:32:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:50,969 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2021-11-25 20:32:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:32:50,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 50 [2021-11-25 20:32:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:50,981 INFO L225 Difference]: With dead ends: 124 [2021-11-25 20:32:50,982 INFO L226 Difference]: Without dead ends: 81 [2021-11-25 20:32:50,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:32:50,990 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 36 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:50,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 467 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 20:32:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-25 20:32:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-25 20:32:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-25 20:32:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-11-25 20:32:51,046 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2021-11-25 20:32:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:51,048 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-11-25 20:32:51,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-25 20:32:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-11-25 20:32:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 20:32:51,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:51,052 INFO L514 BasicCegarLoop]: trace histogram [6, 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, 1] [2021-11-25 20:32:51,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:32:51,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -746103450, now seen corresponding path program 1 times [2021-11-25 20:32:51,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:51,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570221988] [2021-11-25 20:32:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:51,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 20:32:53,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570221988] [2021-11-25 20:32:53,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570221988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:32:53,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128334637] [2021-11-25 20:32:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:53,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:53,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:53,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be9bb27-879c-4521-9909-3cba628d0cce/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:32:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:54,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2580 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-25 20:32:54,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:54,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:32:59,004 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 80 treesize of output 68 [2021-11-25 20:32:59,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:32:59,109 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:32:59,692 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 8 treesize of output 4 [2021-11-25 20:32:59,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 20:33:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 20:33:00,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:33:03,230 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 20:40:31,885 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.