./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_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_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/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_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/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_1e310beb-7aa7-40b6-873e-644e183a2e58/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 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:34:03,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:34:03,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:34:03,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:34:03,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:34:03,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:34:03,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:34:03,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:34:03,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:34:03,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:34:03,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:34:03,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:34:03,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:34:03,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:34:03,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:34:03,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:34:03,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:34:03,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:34:03,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:34:03,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:34:03,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:34:03,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:34:03,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:34:03,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:34:03,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:34:03,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:34:03,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:34:03,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:34:03,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:34:03,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:34:03,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:34:03,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:34:03,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:34:03,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:34:03,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:34:03,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:34:03,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:34:03,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:34:03,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:34:03,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:34:03,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:34:03,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:34:03,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:34:03,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:34:03,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:34:03,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:34:03,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:34:03,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:34:03,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:34:03,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:34:03,487 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:34:03,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:34:03,488 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:34:03,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:34:03,488 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:34:03,488 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:34:03,489 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:34:03,489 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:34:03,489 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:34:03,489 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:34:03,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:34:03,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:34:03,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:34:03,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:34:03,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:34:03,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:34:03,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:34:03,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:34:03,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:34:03,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:34:03,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:34:03,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:03,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:34:03,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:34:03,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:34:03,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:34:03,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:34:03,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:34:03,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:34:03,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:34:03,494 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_1e310beb-7aa7-40b6-873e-644e183a2e58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-11-25 20:34:03,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:34:03,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:34:03,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:34:03,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:34:03,765 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:34:03,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-25 20:34:03,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/data/a6cac245b/1d986164720e41b290554b6c880ceb3f/FLAG022e7fa10 [2021-11-25 20:34:04,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:34:04,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-25 20:34:04,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/data/a6cac245b/1d986164720e41b290554b6c880ceb3f/FLAG022e7fa10 [2021-11-25 20:34:04,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/data/a6cac245b/1d986164720e41b290554b6c880ceb3f [2021-11-25 20:34:04,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:34:04,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:34:04,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:04,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:34:04,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:34:04,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:04" (1/1) ... [2021-11-25 20:34:04,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a618eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:04, skipping insertion in model container [2021-11-25 20:34:04,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:04" (1/1) ... [2021-11-25 20:34:04,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:34:04,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:34:05,105 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_1e310beb-7aa7-40b6-873e-644e183a2e58/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-25 20:34:05,113 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_1e310beb-7aa7-40b6-873e-644e183a2e58/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-25 20:34:06,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,416 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:34:06,418 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:34:06,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:34:06,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:34:06,423 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:34:06,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:34:06,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:34:06,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:34:06,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:34:06,427 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:34:06,563 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:34:06,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:06,601 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:34:06,614 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_1e310beb-7aa7-40b6-873e-644e183a2e58/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-25 20:34:06,614 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_1e310beb-7aa7-40b6-873e-644e183a2e58/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-25 20:34:06,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,684 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:34:06,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:34:06,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:34:06,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:34:06,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:34:06,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:34:06,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:34:06,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:34:06,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:34:06,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:34:06,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:34:06,759 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:34:06,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:06,998 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:34:06,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06 WrapperNode [2021-11-25 20:34:06,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:07,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:07,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:34:07,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:34:07,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,176 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 78 [2021-11-25 20:34:07,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:07,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:34:07,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:34:07,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:34:07,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:34:07,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:34:07,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:34:07,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:34:07,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (1/1) ... [2021-11-25 20:34:07,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:07,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:07,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:34:07,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:34:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:34:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:34:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:34:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 20:34:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 20:34:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:34:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:34:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:34:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:34:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:34:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:34:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:34:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:34:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:34:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-25 20:34:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-25 20:34:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:34:07,643 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:34:07,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:34:07,858 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:34:07,939 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:34:07,939 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:34:07,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:07 BoogieIcfgContainer [2021-11-25 20:34:07,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:34:07,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:34:07,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:34:07,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:34:07,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:34:04" (1/3) ... [2021-11-25 20:34:07,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38523c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:07, skipping insertion in model container [2021-11-25 20:34:07,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:06" (2/3) ... [2021-11-25 20:34:07,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38523c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:07, skipping insertion in model container [2021-11-25 20:34:07,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:07" (3/3) ... [2021-11-25 20:34:07,950 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-11-25 20:34:07,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:34:07,955 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:34:08,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:34:08,009 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 20:34:08,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:34:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-25 20:34:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:34:08,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:08,033 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:08,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -144968383, now seen corresponding path program 1 times [2021-11-25 20:34:08,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:08,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450902279] [2021-11-25 20:34:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:08,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:34:09,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:09,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450902279] [2021-11-25 20:34:09,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450902279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:09,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:09,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:34:09,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592078560] [2021-11-25 20:34:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:09,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:09,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:34:09,519 INFO L87 Difference]: Start difference. First operand has 46 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 20:34:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:09,961 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2021-11-25 20:34:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:34:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-11-25 20:34:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:09,979 INFO L225 Difference]: With dead ends: 86 [2021-11-25 20:34:09,979 INFO L226 Difference]: Without dead ends: 48 [2021-11-25 20:34:09,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:34:09,992 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:09,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 181 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:34:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-25 20:34:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-25 20:34:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-25 20:34:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-11-25 20:34:10,049 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2021-11-25 20:34:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:10,052 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-11-25 20:34:10,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 20:34:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-11-25 20:34:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:34:10,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:10,054 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:34:10,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:34:10,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 728698747, now seen corresponding path program 1 times [2021-11-25 20:34:10,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:10,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137174440] [2021-11-25 20:34:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:10,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:34:10,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137174440] [2021-11-25 20:34:10,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137174440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:34:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493868667] [2021-11-25 20:34:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:10,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:10,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:10,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e310beb-7aa7-40b6-873e-644e183a2e58/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:34:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:11,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 20:34:11,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:11,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 20:34:11,236 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 20:34:11,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2021-11-25 20:34:11,248 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:34:11,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-11-25 20:34:13,349 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|) 0))) (< 1 |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_1|))) is different from true [2021-11-25 20:34:15,484 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2| Int)) (and (< 1 |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2|) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2|) 0) |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_2|)))) is different from true [2021-11-25 20:34:17,616 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3|) 0))) (< 1 |v_ULTIMATE.start_aws_linked_list_insert_after_~after#1.base_BEFORE_CALL_3|))) is different from true [2021-11-25 20:34:19,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:19,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 124 [2021-11-25 20:34:19,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:19,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-25 20:34:19,890 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 20:34:19,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 101 [2021-11-25 20:34:19,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:19,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2021-11-25 20:34:19,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-25 20:34:19,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2021-11-25 20:34:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:19,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-11-25 20:34:19,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 20:34:19,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-25 20:34:20,020 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 20:34:20,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 68 [2021-11-25 20:34:20,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-25 20:34:21,375 INFO L354 Elim1Store]: treesize reduction 8, result has 71.4 percent of original size [2021-11-25 20:34:21,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 100 [2021-11-25 20:34:21,405 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-25 20:34:21,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 35 [2021-11-25 20:34:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 20:34:21,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:24,117 INFO L354 Elim1Store]: treesize reduction 38, result has 61.6 percent of original size [2021-11-25 20:34:24,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1254 treesize of output 1190 [2021-11-25 20:34:24,173 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:24,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4593 treesize of output 4581 [2021-11-25 20:34:24,347 INFO L354 Elim1Store]: treesize reduction 14, result has 61.1 percent of original size [2021-11-25 20:34:24,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 2762 treesize of output 2765 [2021-11-25 20:34:24,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:24,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8511 treesize of output 8499 [2021-11-25 20:34:24,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8534 treesize of output 8470 [2021-11-25 20:34:24,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:24,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4466 treesize of output 4454 [2021-11-25 20:34:24,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10246 treesize of output 10182 [2021-11-25 20:34:57,899 INFO L354 Elim1Store]: treesize reduction 38, result has 61.6 percent of original size [2021-11-25 20:34:57,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 478 treesize of output 415 [2021-11-25 20:34:57,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:57,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 980 treesize of output 970 [2021-11-25 20:34:58,004 INFO L354 Elim1Store]: treesize reduction 14, result has 61.1 percent of original size [2021-11-25 20:34:58,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1128 treesize of output 1112 [2021-11-25 20:34:58,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:58,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1342 treesize of output 1338 [2021-11-25 20:34:58,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1340 treesize of output 1296 [2021-11-25 20:34:58,111 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:58,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1318 treesize of output 1306 [2021-11-25 20:34:58,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1370 treesize of output 1346 [2021-11-25 20:34:58,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:58,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:58,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:58,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:59,299 INFO L354 Elim1Store]: treesize reduction 38, result has 61.6 percent of original size [2021-11-25 20:34:59,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1154 treesize of output 966 [2021-11-25 20:34:59,409 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:59,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14401 treesize of output 13009 [2021-11-25 20:34:59,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:59,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24719 treesize of output 23543 [2021-11-25 20:34:59,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:00,034 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:00,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 23636 treesize of output 23283 [2021-11-25 20:35:00,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:00,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:00,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:00,439 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:00,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 15757 treesize of output 15329 [2021-11-25 20:35:01,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:01,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:01,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:01,101 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:01,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 22058 treesize of output 21778