./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:23:55,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:23:55,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:23:55,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:23:55,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:23:55,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:23:55,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:23:55,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:23:55,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:23:55,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:23:55,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:23:55,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:23:55,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:23:55,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:23:55,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:23:55,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:23:55,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:23:55,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:23:55,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:23:55,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:23:55,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:23:55,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:23:55,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:23:55,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:23:55,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:23:55,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:23:55,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:23:55,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:23:55,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:23:55,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:23:55,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:23:55,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:23:55,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:23:55,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:23:55,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:23:55,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:23:55,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:23:55,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:23:55,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:23:55,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:23:55,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:23:55,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:23:55,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:23:55,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:23:55,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:23:55,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:23:55,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:23:55,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:23:55,425 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:23:55,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:23:55,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:23:55,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:23:55,426 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:23:55,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:23:55,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:23:55,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:23:55,427 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:23:55,427 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:23:55,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:23:55,428 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:23:55,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:23:55,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:23:55,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:23:55,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:23:55,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:23:55,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:23:55,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:23:55,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:23:55,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:23:55,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:23:55,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:23:55,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:23:55,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:23:55,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:23:55,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:23:55,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:23:55,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:23:55,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:23:55,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:23:55,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:23:55,433 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-11-23 02:23:55,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:23:55,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:23:55,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:23:55,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:23:55,690 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:23:55,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-23 02:23:55,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/3cb2f9f90/06e892e458eb4034b06876d97464bd51/FLAG511ae7c1d [2021-11-23 02:23:56,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:23:56,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-23 02:23:56,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/3cb2f9f90/06e892e458eb4034b06876d97464bd51/FLAG511ae7c1d [2021-11-23 02:23:56,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/3cb2f9f90/06e892e458eb4034b06876d97464bd51 [2021-11-23 02:23:56,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:23:56,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:23:56,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:23:56,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:23:56,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:23:56,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:56" (1/1) ... [2021-11-23 02:23:56,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b7d648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56, skipping insertion in model container [2021-11-23 02:23:56,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:56" (1/1) ... [2021-11-23 02:23:56,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:23:56,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:23:57,077 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-23 02:23:57,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-23 02:23:58,018 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,022 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,057 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:23:58,493 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:23:58,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:23:58,495 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:23:58,497 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:23:58,497 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:23:58,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:23:58,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:23:58,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:23:58,500 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:23:58,666 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:23:58,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:23:58,705 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:23:58,718 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-23 02:23:58,719 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-23 02:23:58,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,758 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,759 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:23:58,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:23:58,807 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:23:58,807 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:23:58,808 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:23:58,809 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:23:58,810 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:23:58,811 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:23:58,811 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:23:58,812 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:23:58,812 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:23:58,834 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:23:58,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:23:59,138 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:23:59,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59 WrapperNode [2021-11-23 02:23:59,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:23:59,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:23:59,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:23:59,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:23:59,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,349 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 78 [2021-11-23 02:23:59,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:23:59,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:23:59,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:23:59,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:23:59,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:23:59,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:23:59,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:23:59,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:23:59,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (1/1) ... [2021-11-23 02:23:59,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:23:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:59,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:23:59,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:23:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:23:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:23:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:23:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-23 02:23:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-23 02:23:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:23:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:23:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:23:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:23:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-23 02:23:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-23 02:23:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:23:59,724 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:23:59,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:23:59,968 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:24:00,025 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:24:00,025 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:24:00,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:00 BoogieIcfgContainer [2021-11-23 02:24:00,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:24:00,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:24:00,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:24:00,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:24:00,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:56" (1/3) ... [2021-11-23 02:24:00,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f62704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:00, skipping insertion in model container [2021-11-23 02:24:00,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:59" (2/3) ... [2021-11-23 02:24:00,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f62704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:00, skipping insertion in model container [2021-11-23 02:24:00,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:00" (3/3) ... [2021-11-23 02:24:00,036 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-11-23 02:24:00,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:24:00,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:24:00,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:24:00,095 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:24:00,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:24:00,112 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) [2021-11-23 02:24:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:24:00,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:00,118 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:24:00,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:24:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash -144968383, now seen corresponding path program 1 times [2021-11-23 02:24:00,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001582352] [2021-11-23 02:24:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:00,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:24:01,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001582352] [2021-11-23 02:24:01,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001582352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:01,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:24:01,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231350602] [2021-11-23 02:24:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:01,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:24:01,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:24:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:24:01,177 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) [2021-11-23 02:24:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:01,730 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2021-11-23 02:24:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:24:01,733 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 [2021-11-23 02:24:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:01,745 INFO L225 Difference]: With dead ends: 86 [2021-11-23 02:24:01,746 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 02:24:01,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:24:01,766 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:01,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 181 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:24:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 02:24:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-23 02:24:01,810 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) [2021-11-23 02:24:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-11-23 02:24:01,814 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2021-11-23 02:24:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-11-23 02:24:01,815 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) [2021-11-23 02:24:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-11-23 02:24:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:24:01,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:01,817 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] [2021-11-23 02:24:01,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:24:01,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:24:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:01,819 INFO L85 PathProgramCache]: Analyzing trace with hash 728698747, now seen corresponding path program 1 times [2021-11-23 02:24:01,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:01,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890032455] [2021-11-23 02:24:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:01,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:24:02,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:02,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890032455] [2021-11-23 02:24:02,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890032455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:24:02,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534439940] [2021-11-23 02:24:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:02,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:02,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:02,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:02,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:24:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:02,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-23 02:24:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:02,920 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 02:24:02,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2021-11-23 02:24:02,944 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:24:02,944 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 48 treesize of output 40 [2021-11-23 02:24:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:08,513 INFO L354 Elim1Store]: treesize reduction 295, result has 15.7 percent of original size [2021-11-23 02:24:08,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 532 treesize of output 359 [2021-11-23 02:24:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:08,602 INFO L354 Elim1Store]: treesize reduction 309, result has 13.2 percent of original size [2021-11-23 02:24:08,602 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 186 treesize of output 97 [2021-11-23 02:24:10,454 INFO L354 Elim1Store]: treesize reduction 235, result has 39.0 percent of original size [2021-11-23 02:24:10,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 289 treesize of output 307 [2021-11-23 02:24:10,598 INFO L354 Elim1Store]: treesize reduction 277, result has 9.2 percent of original size [2021-11-23 02:24:10,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 287 treesize of output 239 [2021-11-23 02:24:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:24:10,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:24:13,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:24:13,203 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 13827 treesize of output 13611 [2021-11-23 02:24:19,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:24:19,826 INFO L354 Elim1Store]: treesize reduction 1676, result has 0.8 percent of original size [2021-11-23 02:24:19,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 238093 treesize of output 206375 [2021-11-23 02:25:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:31,161 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 2198 treesize of output 2150 [2021-11-23 02:25:33,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534439940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:33,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1980283236] [2021-11-23 02:25:33,411 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-23 02:25:33,411 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:25:33,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:25:33,424 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:25:33,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:33,553 INFO L354 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2021-11-23 02:25:33,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2021-11-23 02:25:33,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,728 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-23 02:25:33,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-23 02:25:33,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-23 02:25:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:33,833 INFO L354 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2021-11-23 02:25:33,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2021-11-23 02:25:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,044 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-23 02:25:34,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-23 02:25:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-23 02:25:34,109 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-23 02:25:34,114 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-23 02:25:34,276 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-11-23 02:25:34,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:34,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:34,935 INFO L354 Elim1Store]: treesize reduction 284, result has 26.0 percent of original size [2021-11-23 02:25:34,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1299 treesize of output 980 [2021-11-23 02:25:34,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:34,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:34,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:35,128 INFO L354 Elim1Store]: treesize reduction 85, result has 29.2 percent of original size [2021-11-23 02:25:35,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 519 treesize of output 317 [2021-11-23 02:25:35,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:25:35,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 02:25:35,350 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 02:25:35,353 INFO L158 Benchmark]: Toolchain (without parser) took 98671.84ms. Allocated memory was 111.1MB in the beginning and 612.4MB in the end (delta: 501.2MB). Free memory was 72.0MB in the beginning and 210.3MB in the end (delta: -138.3MB). Peak memory consumption was 363.9MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,354 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 66.1MB in the beginning and 66.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:25:35,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2450.40ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 72.0MB in the beginning and 56.8MB in the end (delta: 15.2MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.73ms. Allocated memory is still 140.5MB. Free memory was 56.8MB in the beginning and 96.3MB in the end (delta: -39.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,355 INFO L158 Benchmark]: Boogie Preprocessor took 40.84ms. Allocated memory is still 140.5MB. Free memory was 96.3MB in the beginning and 93.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,356 INFO L158 Benchmark]: RCFGBuilder took 636.30ms. Allocated memory is still 140.5MB. Free memory was 93.5MB in the beginning and 69.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,356 INFO L158 Benchmark]: TraceAbstraction took 95322.83ms. Allocated memory was 140.5MB in the beginning and 612.4MB in the end (delta: 471.9MB). Free memory was 69.1MB in the beginning and 210.3MB in the end (delta: -141.2MB). Peak memory consumption was 330.4MB. Max. memory is 16.1GB. [2021-11-23 02:25:35,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 66.1MB in the beginning and 66.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2450.40ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 72.0MB in the beginning and 56.8MB in the end (delta: 15.2MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 209.73ms. Allocated memory is still 140.5MB. Free memory was 56.8MB in the beginning and 96.3MB in the end (delta: -39.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.84ms. Allocated memory is still 140.5MB. Free memory was 96.3MB in the beginning and 93.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.30ms. Allocated memory is still 140.5MB. Free memory was 93.5MB in the beginning and 69.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 95322.83ms. Allocated memory was 140.5MB in the beginning and 612.4MB in the end (delta: 471.9MB). Free memory was 69.1MB in the beginning and 210.3MB in the end (delta: -141.2MB). Peak memory consumption was 330.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 02:25:35,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:25:37,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:25:37,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:25:37,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:25:37,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:25:37,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:25:37,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:25:37,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:25:37,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:25:37,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:25:37,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:25:37,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:25:37,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:25:37,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:25:37,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:25:37,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:25:37,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:25:37,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:25:37,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:25:37,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:25:37,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:25:37,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:25:37,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:25:37,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:25:37,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:25:37,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:25:37,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:25:37,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:25:37,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:25:37,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:25:37,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:25:37,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:25:37,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:25:37,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:25:37,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:25:37,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:25:37,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:25:37,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:25:37,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:25:37,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:25:37,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:25:37,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 02:25:37,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:25:37,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:25:37,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:25:37,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:25:37,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:25:37,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:25:37,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:25:37,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:25:37,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:25:37,863 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:25:37,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:25:37,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:25:37,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:25:37,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:25:37,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:25:37,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:25:37,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:25:37,867 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:25:37,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:25:37,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:25:37,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:25:37,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:25:37,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:25:37,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:25:37,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:25:37,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:25:37,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:37,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:25:37,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:25:37,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:25:37,870 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:25:37,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:25:37,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:25:37,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:25:37,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:25:37,872 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-11-23 02:25:38,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:25:38,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:25:38,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:25:38,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:25:38,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:25:38,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-23 02:25:38,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/365c80744/5f9c58395257487789ce353c4224ed11/FLAG7362aecfc [2021-11-23 02:25:39,269 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:25:39,270 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-11-23 02:25:39,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/365c80744/5f9c58395257487789ce353c4224ed11/FLAG7362aecfc [2021-11-23 02:25:39,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/data/365c80744/5f9c58395257487789ce353c4224ed11 [2021-11-23 02:25:39,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:25:39,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:25:39,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:39,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:25:39,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:25:39,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:39" (1/1) ... [2021-11-23 02:25:39,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff22934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:39, skipping insertion in model container [2021-11-23 02:25:39,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:39" (1/1) ... [2021-11-23 02:25:39,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:25:39,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:40,218 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-23 02:25:40,229 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-23 02:25:41,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,728 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,729 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:41,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:25:42,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:25:42,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:25:42,188 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:25:42,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:25:42,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:25:42,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:25:42,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:25:42,192 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:25:42,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:25:42,337 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:25:42,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:42,391 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:25:42,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:25:42,424 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-23 02:25:42,425 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-23 02:25:42,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,530 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:25:42,531 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:25:42,531 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:25:42,533 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:25:42,534 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:25:42,535 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:25:42,535 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:25:42,536 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:25:42,536 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:25:42,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:25:42,564 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:25:42,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:42,589 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:25:42,604 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-11-23 02:25:42,605 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_d5f677f9-5d1b-45b3-b14d-03316e09ce35/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-11-23 02:25:42,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:25:42,728 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:25:42,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:25:42,730 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:25:42,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:25:42,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:25:42,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:25:42,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:25:42,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:25:42,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:25:42,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:25:42,753 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:25:42,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:25:43,226 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:25:43,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43 WrapperNode [2021-11-23 02:25:43,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:25:43,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:43,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:25:43,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:25:43,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,424 INFO L137 Inliner]: procedures = 698, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 79 [2021-11-23 02:25:43,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:25:43,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:25:43,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:25:43,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:25:43,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:25:43,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:25:43,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:25:43,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:25:43,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (1/1) ... [2021-11-23 02:25:43,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:25:43,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:25:43,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:25:43,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:25:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:25:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:25:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:25:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:25:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-23 02:25:43,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-23 02:25:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:25:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:25:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:25:43,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:25:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:25:43,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:25:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:25:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:25:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:25:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-23 02:25:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-23 02:25:43,795 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:25:43,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:25:44,192 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:25:44,200 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:25:44,200 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:25:44,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:44 BoogieIcfgContainer [2021-11-23 02:25:44,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:25:44,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:25:44,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:25:44,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:25:44,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:39" (1/3) ... [2021-11-23 02:25:44,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f887a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:44, skipping insertion in model container [2021-11-23 02:25:44,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:43" (2/3) ... [2021-11-23 02:25:44,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f887a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:44, skipping insertion in model container [2021-11-23 02:25:44,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:44" (3/3) ... [2021-11-23 02:25:44,210 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-11-23 02:25:44,216 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:25:44,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:25:44,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:25:44,271 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:25:44,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:25:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 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) [2021-11-23 02:25:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:25:44,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:44,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:44,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -946824848, now seen corresponding path program 1 times [2021-11-23 02:25:44,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:25:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397452493] [2021-11-23 02:25:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:44,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:25:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:25:44,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:25:44,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:25:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:44,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:25:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:25:44,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:25:44,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:25:44,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397452493] [2021-11-23 02:25:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397452493] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:25:44,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:25:44,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-23 02:25:44,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554717353] [2021-11-23 02:25:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:25:44,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:25:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:25:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:25:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:25:44,845 INFO L87 Difference]: Start difference. First operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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) [2021-11-23 02:25:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:25:44,904 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2021-11-23 02:25:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:25:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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 34 [2021-11-23 02:25:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:25:44,921 INFO L225 Difference]: With dead ends: 122 [2021-11-23 02:25:44,922 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:25:44,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:25:44,952 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:25:44,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:25:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:25:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-23 02:25:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:25:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2021-11-23 02:25:45,030 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 34 [2021-11-23 02:25:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:25:45,033 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2021-11-23 02:25:45,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 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) [2021-11-23 02:25:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2021-11-23 02:25:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:25:45,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:25:45,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:25:45,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:25:45,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:25:45,252 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:25:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:25:45,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1749038484, now seen corresponding path program 1 times [2021-11-23 02:25:45,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:25:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398131995] [2021-11-23 02:25:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:25:45,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:25:45,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:25:45,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:25:45,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:25:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:25:45,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 02:25:45,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:25:45,678 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 02:25:45,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-11-23 02:25:45,696 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:25:45,696 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 52 treesize of output 44 [2021-11-23 02:25:46,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:46,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:47,426 INFO L354 Elim1Store]: treesize reduction 279, result has 14.9 percent of original size [2021-11-23 02:25:47,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 946 treesize of output 582 [2021-11-23 02:25:47,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:25:47,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:25:51,459 INFO L354 Elim1Store]: treesize reduction 347, result has 12.2 percent of original size [2021-11-23 02:25:51,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 598 treesize of output 191 [2021-11-23 02:25:54,776 INFO L354 Elim1Store]: treesize reduction 225, result has 35.5 percent of original size [2021-11-23 02:25:54,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 303 treesize of output 280 [2021-11-23 02:25:55,074 INFO L354 Elim1Store]: treesize reduction 273, result has 9.3 percent of original size [2021-11-23 02:25:55,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 275 treesize of output 229 [2021-11-23 02:25:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:25:55,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:25:56,791 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 1495 treesize of output 1415 [2021-11-23 02:25:59,300 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 1740 treesize of output 1716 [2021-11-23 02:26:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:26:05,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:26:05,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398131995] [2021-11-23 02:26:05,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398131995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:05,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:05,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 20 [2021-11-23 02:26:05,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235630546] [2021-11-23 02:26:05,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:05,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:26:05,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:26:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:26:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=324, Unknown=1, NotChecked=0, Total=380 [2021-11-23 02:26:05,558 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-23 02:26:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:08,883 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2021-11-23 02:26:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 02:26:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2021-11-23 02:26:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:08,886 INFO L225 Difference]: With dead ends: 89 [2021-11-23 02:26:08,887 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 02:26:08,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=82, Invalid=517, Unknown=1, NotChecked=0, Total=600 [2021-11-23 02:26:08,888 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 31 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:08,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 820 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 69 Unchecked, 0.5s Time] [2021-11-23 02:26:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 02:26:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-11-23 02:26:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:26:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-11-23 02:26:08,916 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 34 [2021-11-23 02:26:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:08,916 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-11-23 02:26:08,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 6 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-23 02:26:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-11-23 02:26:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:26:08,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:08,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:08,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:09,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:26:09,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1736582186, now seen corresponding path program 1 times [2021-11-23 02:26:09,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:26:09,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937043557] [2021-11-23 02:26:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:09,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:26:09,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:26:09,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:26:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:26:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:09,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:26:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:26,662 WARN L227 SmtUtils]: Spent 2.29m on a formula simplification. DAG size of input: 127 DAG size of output: 87 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:28:26,664 INFO L354 Elim1Store]: treesize reduction 1327, result has 33.8 percent of original size [2021-11-23 02:28:26,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1143 treesize of output 883 [2021-11-23 02:28:26,697 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 6495 treesize of output 6159 [2021-11-23 02:28:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:28:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:28:27,362 INFO L354 Elim1Store]: treesize reduction 90, result has 32.3 percent of original size [2021-11-23 02:28:27,363 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 5 new quantified variables, introduced 8 case distinctions, treesize of input 510 treesize of output 458 [2021-11-23 02:28:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:28:29,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:28:30,333 INFO L354 Elim1Store]: treesize reduction 62, result has 54.7 percent of original size [2021-11-23 02:28:30,334 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 5 new quantified variables, introduced 9 case distinctions, treesize of input 1206 treesize of output 1168 [2021-11-23 02:37:46,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-23 02:37:46,234 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-23 02:37:46,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:37:46,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937043557] [2021-11-23 02:37:46,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-23 02:37:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [986833783] [2021-11-23 02:37:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:46,237 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:37:46,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:37:46,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:37:46,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-23 02:37:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:46,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:37:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:46,679 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-23 02:37:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712310774] [2021-11-23 02:37:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:46,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:46,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:46,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:37:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:46,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:37:46,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:46,853 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-23 02:37:46,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:46,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-23 02:37:46,854 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-23 02:37:46,854 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-23 02:37:46,866 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:37:46,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:47,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 02:37:47,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-23 02:37:47,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f677f9-5d1b-45b3-b14d-03316e09ce35/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:37:47,493 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 02:37:47,496 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:37:47,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:37:47 BoogieIcfgContainer [2021-11-23 02:37:47,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:37:47,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:37:47,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:37:47,517 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:37:47,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:44" (3/4) ... [2021-11-23 02:37:47,521 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:37:47,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:37:47,522 INFO L158 Benchmark]: Toolchain (without parser) took 727749.87ms. Allocated memory was 52.4MB in the beginning and 127.9MB in the end (delta: 75.5MB). Free memory was 33.8MB in the beginning and 46.7MB in the end (delta: -12.9MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,523 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:37:47,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3456.81ms. Allocated memory was 52.4MB in the beginning and 104.9MB in the end (delta: 52.4MB). Free memory was 33.6MB in the beginning and 50.9MB in the end (delta: -17.3MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 194.83ms. Allocated memory is still 104.9MB. Free memory was 50.9MB in the beginning and 45.2MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,524 INFO L158 Benchmark]: Boogie Preprocessor took 90.97ms. Allocated memory is still 104.9MB. Free memory was 45.2MB in the beginning and 41.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,525 INFO L158 Benchmark]: RCFGBuilder took 683.62ms. Allocated memory is still 104.9MB. Free memory was 41.9MB in the beginning and 50.4MB in the end (delta: -8.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,525 INFO L158 Benchmark]: TraceAbstraction took 723311.42ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 49.6MB in the beginning and 46.7MB in the end (delta: 2.9MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2021-11-23 02:37:47,526 INFO L158 Benchmark]: Witness Printer took 5.31ms. Allocated memory is still 127.9MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:37:47,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3456.81ms. Allocated memory was 52.4MB in the beginning and 104.9MB in the end (delta: 52.4MB). Free memory was 33.6MB in the beginning and 50.9MB in the end (delta: -17.3MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 194.83ms. Allocated memory is still 104.9MB. Free memory was 50.9MB in the beginning and 45.2MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.97ms. Allocated memory is still 104.9MB. Free memory was 45.2MB in the beginning and 41.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 683.62ms. Allocated memory is still 104.9MB. Free memory was 41.9MB in the beginning and 50.4MB in the end (delta: -8.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 723311.42ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 49.6MB in the beginning and 46.7MB in the end (delta: 2.9MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 5.31ms. Allocated memory is still 127.9MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6915-L6920] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7360] static __thread int tl_last_error = 0; [L7397] CALL aws_linked_list_insert_after_harness() [L7378] struct aws_linked_list_node after; [L7379] struct aws_linked_list_node after_next; [L7380] struct aws_linked_list_node to_add; [L7382] after.next = &after_next [L7383] after_next.prev = &after [L7386] CALL aws_linked_list_insert_after(&after, &to_add) [L4863] CALL, EXPR aws_linked_list_node_next_is_valid(after) [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] EXPR node->next [L4720] EXPR node->next->prev [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4863] RET, EXPR aws_linked_list_node_next_is_valid(after) [L4863] CALL assume_abort_if_not((aws_linked_list_node_next_is_valid(after))) [L211] COND FALSE !(!cond) [L4863] RET assume_abort_if_not((aws_linked_list_node_next_is_valid(after))) [L4864-L4866] CALL assume_abort_if_not((to_add != ((void *)0) )) [L211] COND FALSE !(!cond) [L4864-L4866] RET assume_abort_if_not((to_add != ((void *)0) )) [L4867] to_add->prev = after [L4868] EXPR after->next [L4868] to_add->next = after->next [L4869] EXPR after->next [L4869] after->next->prev = to_add [L4870] after->next = to_add [L4871] CALL, EXPR aws_linked_list_node_next_is_valid(after) [L4720] EXPR node && node->next [L4720] EXPR node->next [L4720] EXPR node && node->next [L4720] EXPR node && node->next && node->next->prev == node [L4720] return node && node->next && node->next->prev == node; [L4871] RET, EXPR aws_linked_list_node_next_is_valid(after) [L4871] CALL __VERIFIER_assert((aws_linked_list_node_next_is_valid(after))) [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 723.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 902 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 69 IncrementalHoareTripleChecker+Unchecked, 747 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 155 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=2, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 717.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 132 ConstructedInterpolants, 32 QuantifiedInterpolants, 3745 SizeOfPredicates, 29 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 42/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN